CN112155594B - Registration method for ultrasonic image, ultrasonic device and storage medium - Google Patents
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Abstract
The invention relates to the technical field of ultrasonic image processing, and particularly discloses a registration method for an ultrasonic image, wherein a screen is arranged in a region to be scanned of a detected body, the screen is in contact with the surface of the detected body, a high-acoustic-impedance identification strip is arranged on the screen, is positioned in the region to be scanned and is away from the boundary of the region to be scanned within a preset range, and the method comprises the following steps: acquiring a plurality of rows of ultrasonic images in an area to be scanned; respectively calculating the ultrasonic image gray value of each frame of each row of ultrasonic images; taking the frame of ultrasonic image with the minimum gray value in each row of ultrasonic images as a registration reference image of the row of ultrasonic images; and splicing the registration reference images to obtain invalid ultrasonic images, and splicing the effective ultrasonic images positioned at two sides of the registration reference images in each row to obtain ultrasonic scanning images. The invention also discloses ultrasonic equipment and a storage medium. The registration method for the ultrasonic images provided by the invention has small calculation amount and is not influenced by noise.
Description
Technical Field
The present invention relates to the field of ultrasound image processing technologies, and in particular, to a registration method for ultrasound images, an ultrasound device, and a computer-readable storage medium.
Background
The ultrasonic image detection has the advantages of strong real-time performance, high safety, low price, high efficiency and the like, and is widely applied to the detection of some superficial organs.
In an actual application scene, due to the small size of the probe, a plurality of image subcolumns are required to be scanned and spliced frequently to reproduce the characteristics of a scanned body. The starting position and the ending position of the movement of the probe in each row have non-uniform distribution areas of the density of the images, and the difference between the density distribution of the fault images in the areas and normal scanning areas is large, so that direct integral registration and splicing can not be realized according to image indexes.
Existing registration methods can be broadly classified into three types of methods, i.e., grayscale-based, geometric feature-based, and both grayscale and geometric feature-based. In practical application, the gray level-based registration method has low efficiency due to large calculated amount, and user experience is influenced; the feature-based registration method is mostly suitable for images with higher resolution, and ultrasound images have low resolution due to the existence of more noise, so that the expected effect of registration cannot be achieved. Therefore, how to provide a registration method that is computationally inexpensive and not susceptible to noise becomes an urgent technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a registration method for an ultrasonic image, an ultrasonic device and a computer readable storage medium, which solve the problems that the registration method with small calculation amount and no influence of noise can not be carried out in the related technology.
As a first aspect of the present invention, there is provided a registration method for an ultrasound image, in which a screen is disposed in a region to be scanned of a subject, the screen being in contact with a surface of the subject, an area of the screen being greater than or equal to an area of the region to be scanned, and a high acoustic impedance marker strip is disposed on the screen within the region to be scanned and within a preset range from a boundary of the region to be scanned, the registration method for an ultrasound image including:
acquiring a plurality of rows of ultrasonic images of the area to be scanned, wherein each row of ultrasonic images are obtained by continuously scanning the ultrasonic probe along the direction vertical to the high-acoustic-impedance marking strip, and each row of ultrasonic images comprises a plurality of frames of ultrasonic images;
respectively calculating the ultrasonic image gray value of each frame of each row of ultrasonic images;
taking the frame of ultrasonic image with the minimum gray value in each row of ultrasonic images as a registration reference image of the row of ultrasonic images;
and splicing the registration reference images to obtain invalid ultrasonic images, and splicing the effective ultrasonic images positioned at two sides of the registration reference images in each row to obtain ultrasonic scanning images.
Further, the splicing the registration reference images to obtain invalid ultrasound images, and splicing the valid ultrasound images in each row located at two sides of the registration reference images to obtain ultrasound scanning images includes:
sequentially splicing the registration reference images in the two adjacent rows of ultrasonic images to obtain an invalid ultrasonic image;
and sequentially splicing each frame of effective ultrasonic images positioned at two sides of the registration reference image in each row of ultrasonic images and the effective ultrasonic images at the same position in the adjacent row of ultrasonic images to obtain a plurality of ultrasonic scanning images.
Further, the sequentially splicing the registration reference images in the two adjacent rows of ultrasound images to obtain an invalid ultrasound image includes:
splicing the registration reference image in the first row of ultrasonic images and the registration reference image in the second row of ultrasonic images;
and from the third row of ultrasonic images, splicing the spliced image obtained in the front row with the registration reference image in the current row of ultrasonic images to obtain an invalid ultrasonic image.
Further, the sequentially splicing each frame of effective ultrasound images on both sides of the registration reference image in each row of ultrasound images with the effective ultrasound images at the same position in an adjacent row of ultrasound images to obtain a plurality of ultrasound scanning images includes:
calculating the index difference of the registration reference images in the two adjacent rows of ultrasonic images;
and splicing each frame of effective ultrasonic images in two adjacent rows of ultrasonic images according to the index difference to obtain a plurality of ultrasonic scanning images.
Further, each frame of valid ultrasound images in the two adjacent rows of ultrasound images is spliced according to the index difference to obtain a plurality of ultrasound scanning images, including:
splicing each frame of effective ultrasonic images in the first row of ultrasonic images with the effective ultrasonic images at the corresponding positions in the second row of ultrasonic images according to a first index difference, wherein the first index difference is the index difference between the first row of ultrasonic images and the second row of ultrasonic images;
and from the third row of ultrasonic images, splicing the spliced image obtained in the front row with the effective ultrasonic image in the current row of ultrasonic images according to a second index difference to obtain a plurality of ultrasonic scanning images, wherein the second index difference is the index difference between the spliced image obtained in the front row and the ultrasonic image in the current row.
Further, before the step of calculating the index difference of the registration reference images in the two adjacent rows of ultrasound images, the method further comprises:
and determining the direction of the index ascending and descending sequence of each row of ultrasonic images, wherein the directions of the index ascending and descending sequences of all rows of ultrasonic images are the same.
Further, when the ascending and descending sequence direction of the indexes of each row of ultrasound images is ascending and sequencing along the direction far away from the high acoustic impedance identification strip, in each row of ultrasound images, the ultrasound image on the side where the index value of the registration reference image gradually rises is an effective ultrasound image of the row of ultrasound images, the ultrasound image on the other side where the index value of the registration reference image gradually rises is an effective ultrasound image which can be registered with the adjacent row according to the index difference, and the ultrasound image on the other side where the index value of the registration reference image gradually falls is an effective ultrasound image which can be registered with the adjacent row according to the index difference;
when the ascending and descending sequence direction of the indexes of the ultrasonic images in each row is descending order along the direction far away from the high-acoustic-impedance identification strip, the ultrasonic image on the side where the index value of the registration reference image is gradually reduced in each row of the ultrasonic images is the effective ultrasonic image of the ultrasonic images in the row.
Further, the registration method for an ultrasound image further includes:
and respectively carrying out weighted average and filtering processing on the invalid ultrasonic image and each spliced part of each ultrasonic scanning image.
As another aspect of the present invention, there is provided an ultrasound apparatus, comprising: a memory communicatively coupled to the processor, the memory for storing computer instructions, and the processor for loading and executing the computer instructions to implement the registration method for ultrasound images as described above.
As another aspect of the present invention, a computer-readable storage medium is provided, wherein computer instructions are stored in the computer-readable storage medium, and the computer instructions are used for causing a computer to execute the registration method for an ultrasound image described above.
According to the registration method for the ultrasonic images, provided by the invention, the high-acoustic-impedance identification strip is arranged on the screen, and the ultrasonic images obtained by scanning the ultrasonic probe on the screen are registered, so that the registration method for the ultrasonic images does not need to perform massive calculation based on gray scale and search based on geometrical structure characteristics, the defects that other methods are low in efficiency and cannot adapt to low-resolution images are avoided in principle, and a rapid and accurate registration effect is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart of a registration method for ultrasound images according to the present invention.
Fig. 2 is a schematic view of a screen arrangement provided by the present invention.
Fig. 3 is a schematic diagram of registration of multiple rows of ultrasound images provided by the present invention.
Fig. 4a is a comparison diagram of the registration and misregistration stitching provided by the present invention.
Fig. 4b is a schematic diagram of the stitching for larger features provided by the present invention.
Fig. 4c is a schematic illustration of a splice of the present invention with insignificant dimensions.
Fig. 4d is another comparison diagram of the unregistered and registered stitching provided by the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present embodiment, a registration method for an ultrasound image is provided, fig. 1 is a flowchart of a registration method for an ultrasound image according to an embodiment of the present invention, and fig. 2 is a schematic diagram of a screen setting provided by an embodiment of the present invention, as shown in fig. 1 and fig. 2, a screen 100 is set in a region to be scanned of a subject, the screen 100 is in contact with a surface of the subject, an area of the screen 100 is greater than or equal to an area of the region to be scanned, a high acoustic impedance marker strip 200 is set on the screen 100, which is located in the region to be scanned and is within a preset range from a boundary of the region to be scanned, and the registration method for an ultrasound image includes:
s110, acquiring multiple rows of ultrasonic images of the area to be scanned, wherein each row of ultrasonic images are obtained by continuously scanning an ultrasonic probe along a direction vertical to the high-acoustic-impedance identification strip, and each row of ultrasonic images comprises multiple frames of ultrasonic images;
the region to be scanned of the subject in the embodiment of the present invention generally refers to superficial tissues or organs having a relatively large scannable area, such as the breast and the abdomen.
It should be further noted that, in the embodiment of the present invention, the high acoustic impedance sign strip is located in the area to be scanned, and is disposed at a position close to the boundary of the area to be scanned, that is, within a preset range from the boundary of the area to be scanned, where the preset range may be 10mm, that is, at a position about 10mm from the boundary of the area to be scanned.
In some embodiments, the screen 100 may be made of resin fiber or the like to have a grid-like structure with high flexibility, which is less likely to cause discomfort to the subject when in contact with the subject.
In some embodiments, the high acoustic impedance marking strip 200 may be made of any material that can satisfy the characteristics of high acoustic impedance, for example, a wood label, a paper strip with a larger thickness, and the like, which is not limited in the present invention.
In the embodiment of the invention, taking the direction shown in fig. 2 as an example, a high-acoustic-impedance identification strip is placed on the left side of the screen, namely the position close to the left boundary of the area to be scanned, and the area to be scanned is scanned by ultrasonic detection.
In some embodiments, point a in fig. 2 is used as the starting position of the scanning of the ultrasound probe, and the position is the frame image starting generation position of the first row of ultrasound images.
It should be noted that when the ultrasound probe scans the region to be scanned, a moving track B as shown in fig. 2 is formed for continuous scanning along a direction perpendicular to the high acoustic impedance marking strip 200.
It should be further noted that the moving track of the ultrasonic probe shown in fig. 2 forms three rows of ultrasonic images, each row of ultrasonic images including a plurality of frames of ultrasonic images. As shown in fig. 3, three rows of ultrasound images corresponding to fig. 2, and each row of ultrasound images includes 5 frames of ultrasound images.
S120, respectively calculating the gray value of each frame of ultrasonic image of each row of ultrasonic images;
taking fig. 2 and fig. 3 as an example, the gray value of each frame of ultrasound image in the three rows of ultrasound images perpendicular to the high acoustic impedance identification bar is calculated respectively, and the gray values of the ultrasound images of all frames in each row of ultrasound images are compared, so as to select the ultrasound image of the frame with the smallest gray value in the row of ultrasound images.
As shown in fig. 3, each row of the three rows of ultrasound images includes 5 frames of ultrasound images, and gray values of the 5 frames of ultrasound images in the first row, the second row and the third row are calculated respectively to obtain a frame of ultrasound image with the lowest gray value in the first row of ultrasound images, a frame of ultrasound image with the lowest gray value in the second row of ultrasound images and a frame of ultrasound image with the lowest gray value in the third row of ultrasound images.
S130, taking a frame of ultrasonic image with the minimum gray value in each row of ultrasonic images as a registration reference image of the row of ultrasonic images;
as shown in fig. 3, the second frame image from left to right in the first row of ultrasound images is the one frame ultrasound image with the smallest grayscale value in the first row of ultrasound images, and therefore, this frame ultrasound image serves as the registration reference image of the first row of ultrasound images, and similarly, the fourth frame image from left to right in the second row of ultrasound images serves as the registration reference image of the second row of ultrasound images, and the first frame image from left to right in the third row of ultrasound images serves as the registration reference image of the third row of ultrasound images.
And S140, splicing the registration reference images to obtain invalid ultrasonic images, and splicing the effective ultrasonic images positioned at the two sides of the registration reference images in each row to obtain ultrasonic scanning images.
And splicing the obtained registration reference images of each row to obtain an invalid ultrasonic image, and splicing the valid ultrasonic images (taking fig. 3 as an example) positioned at two sides of the invalid ultrasonic image to obtain an ultrasonic scanning image.
It should be noted that, what is obtained after the registration reference image is spliced is an invalid ultrasound image, which needs to be discarded, and the images that can be spliced with the adjacent row on both sides of the registration reference image are valid ultrasound images, and the images that cannot be subjected to position matching are invalid ultrasound images, which are discarded.
According to the registration method for the ultrasonic images, provided by the embodiment of the invention, the high-acoustic-impedance identification strip is arranged on the screen, and the ultrasonic images obtained by scanning the ultrasonic probe on the screen are registered, so that the registration method for the ultrasonic images does not need to carry out massive calculation based on gray scale and search based on geometric structure characteristics, the defects that other methods are low in efficiency and cannot adapt to low-resolution images are avoided in principle, and the rapid and accurate registration effect is achieved.
Specifically, the splicing the registration reference images to obtain invalid ultrasound images, and splicing the valid ultrasound images in each row located at two sides of the registration reference images to obtain ultrasound scanning images includes:
sequentially splicing the registration reference images in the two adjacent rows of ultrasonic images to obtain an invalid ultrasonic image;
and sequentially splicing each frame of effective ultrasonic images positioned at two sides of the registration reference image in each row of ultrasonic images and the effective ultrasonic images at the same position in the adjacent row of ultrasonic images to obtain a plurality of ultrasonic scanning images.
Further specifically, the sequentially stitching the registration reference images in the two adjacent rows of ultrasound images to obtain an invalid ultrasound image includes:
splicing the registration reference image in the first row of ultrasonic images and the registration reference image in the second row of ultrasonic images;
and from the third row of ultrasonic images, splicing the spliced image obtained in the front row with the registration reference image in the current row of ultrasonic images to obtain an invalid ultrasonic image.
The effective ultrasonic images of each frame positioned at two sides of the registration reference image in each row of ultrasonic images and the effective ultrasonic images at the same position in the adjacent row of ultrasonic images are spliced in sequence to obtain a plurality of ultrasonic scanning images, and the method comprises the following steps:
calculating the index difference of the registration reference images in the two adjacent rows of ultrasonic images;
and splicing each frame of effective ultrasonic images in two adjacent rows of ultrasonic images according to the index difference to obtain a plurality of ultrasonic scanning images.
It should be noted that, by taking fig. 3 as an example, the second frame registration image counted from left to right in the first row of ultrasound images is stitched with the fourth frame registration reference image counted from left to right in the second row of ultrasound images, the stitched images of the first row and the second row are stitched in the third row, and so on, and similarly, the valid ultrasound images of each frame in each row are also stitched according to this method.
Specifically, each effective ultrasound image in the two adjacent rows of ultrasound images is spliced according to the index difference to obtain a plurality of ultrasound scanning images, including:
splicing each frame of effective ultrasonic images in the first row of ultrasonic images with the effective ultrasonic images at the corresponding positions in the second row of ultrasonic images according to a first index difference, wherein the first index difference is the index difference between the first row of ultrasonic images and the second row of ultrasonic images;
and from the third row of ultrasonic images, splicing the spliced image obtained from the front row with the effective ultrasonic image in the current row of ultrasonic images according to a second index difference to obtain a plurality of ultrasonic scanning images, wherein the second index difference is the index difference between the spliced image obtained from the front row and the ultrasonic image in the current row.
It should be understood that, as shown in fig. 3, the registration reference image of the first line is located at the second frame from left to right, the registration reference image of the second line is located at the fourth frame image from left to right, and the index difference between the registration reference image of the first line and the registration reference image of the second line is 2. As described above, the ultrasound images which are located on both sides of the registration reference image and can be registered with the adjacent row are valid ultrasound images, and the ultrasound images which cannot be registered are invalid ultrasound images, so that two frames of images are discarded from the left side of the registration reference image of the second row (the two frames of images cannot be registered with the images in the adjacent row), and thus the registration reference image in the second row and the registration reference image in the first row are both located at the second frame position counted from left to right, and the registration reference image in the third row is stitched with the stitching result (i.e., the registration reference image is located at the second frame position counted from left to right). Since the registration reference image in the third row is located at the first frame counted from left to right, the registration reference image located at the second frame position counted from left to right in the front row stitching result needs to discard the image of the frame on the left side of the second frame position, and thus the invalid ultrasound image obtained after stitching is located at the first frame position counted from left to right.
It should be understood that if the registration reference image in the third row is located at the second frame position, the third row and the front row are both located at the second frame position, and the third row and the front row can be directly stitched without discarding, so that the invalid ultrasound image obtained after stitching is located at the second frame position from left to right.
It should also be understood that after the registration reference image is moved, the effective ultrasound images on both sides of the registration reference image are sequentially spliced with each frame of ultrasound image at the corresponding positions.
After the final stitching is complete, the invalid ultrasound image is discarded.
It should be noted that, before the step of calculating the index difference of the registration reference images in the two adjacent rows of ultrasound images, the method further includes:
and determining the direction of the index ascending and descending sequence of each row of ultrasonic images, wherein the directions of the index ascending and descending sequences of all rows of ultrasonic images are the same.
Specifically, the ascending and descending sequence direction of each row of tomographic image indexes is set uniformly, the index difference between two images with the lowest gray mean value in adjacent rows is solved, the registration index pair is automatically and sequentially recorded between every two frames of images in the adjacent two rows of images according to the index difference, the two images with the lowered gray values are discarded (it should be understood that, if two frames of images with the same adjacent gray value and the lowest gray value appear in one row of ultrasound images, the ultrasound image with the low gray value close to the right frame needs to be discarded by taking the direction shown in fig. 3 as an example), and the images which cannot be registered due to different numbers of images in each row are discarded
Before calculating the index difference, the direction of the ascending and descending order of the index needs to be determined, for example, as shown in fig. 3, the indexes are sequentially ascending from left to right, that is, the index order of the first row from left to right is 1, 2, 3, 4 and 5, and similarly, the second row and the third row are also the same index order, and the index difference between the first row and the second row is 4-2=2.
Specifically, when the ascending and descending sequence direction of the indexes of the ultrasound images in each row is ascending and sequencing along the direction away from the high acoustic impedance identification bar, in the ultrasound images in each row, the ultrasound image on the side where the index value of the registration reference image gradually rises is an effective ultrasound image of the ultrasound image in the row, an image which can be registered with an adjacent row according to an index difference in the ultrasound image on the other side where the index value of the registration reference image gradually rises is an effective ultrasound image, and an image which can be registered with an adjacent row according to an index difference in the ultrasound image on the other side where the index value of the registration reference image gradually falls is an effective ultrasound image;
when the ascending and descending sequence direction of the indexes of the ultrasonic images in each row is descending order along the direction far away from the high-acoustic-impedance identification strip, the ultrasonic image on the side where the index value of the registration reference image is gradually reduced in each row of the ultrasonic images is the effective ultrasonic image of the ultrasonic images in the row.
It should be understood that valid ultrasound images can be judged according to the ascending and descending order of the index of each row of ultrasound images, so that non-valid ultrasound images can be discarded more quickly and effectively when the registration splicing is carried out.
Specifically, the registration method for an ultrasound image further includes:
and respectively carrying out weighted average and filtering processing on the invalid ultrasonic image and each spliced part of each ultrasonic scanning image.
It should be noted that, for the images obtained by the installation index difference splicing, the overlapped part of the two frames of ultrasonic images uses the image with the larger gray average value in the two frames of images, and the seam is processed by using a median filter with the size of 3 × 3 kernel, and the iteration is performed until the images meeting the requirements are completely registered.
The effect graphs of the registration method provided by the embodiment of the invention are shown in fig. 4a to 4d, wherein the right side of fig. 4a shows the effect of registration and stitching of two adjacent rows of marked tomographic images, and the left side shows the effect of directly stitching without registration, so that the left side of fig. 4a is obviously mismatched.
As can be seen from fig. 4b, for larger features, the registration method provided by the embodiment of the present invention significantly improves the effect after splicing; as can be seen from fig. 4c, a better splicing effect can be obtained for the features with unobvious sizes; as can be seen from fig. 4d, the right side of fig. 4d is a schematic diagram of the effect after stitching through registration, and the left side of fig. 4d is greatly different from the actual situation.
As another embodiment of the present invention, there is provided an ultrasound apparatus including: a memory communicatively coupled to the processor, the memory for storing computer instructions, and the processor for loading and executing the computer instructions to implement the registration method for ultrasound images as described above.
It should be noted that the Memory may be a high-speed RAM Memory (volatile Random Access Memory) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The memory may optionally be at least one memory device located remotely from the processor. Wherein the memory stores an application program and the processor invokes the program code stored in the memory for performing any of the above method steps.
It should be noted that the processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of CPU and NP.
As another embodiment of the present invention, a computer-readable storage medium is provided, wherein computer instructions are stored in the computer-readable storage medium, and the computer instructions are used for causing a computer to execute the registration method for an ultrasound image described above.
The computer-readable storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid-State Drive (SSD), or the like; the computer readable storage medium may also include a combination of memories of the above kinds.
It will be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (5)
1. A registration method for an ultrasound image, wherein a screen is arranged in a region to be scanned of a subject, the screen is in contact with a surface of the subject, the area of the screen is greater than or equal to the area of the region to be scanned, a high acoustic impedance marker strip is arranged on the screen within the region to be scanned and within a preset range from a boundary of the region to be scanned, and the registration method for the ultrasound image comprises the following steps:
acquiring a plurality of rows of ultrasonic images of the area to be scanned, wherein each row of ultrasonic images are obtained by continuously scanning the ultrasonic probe along the direction vertical to the high-acoustic-impedance marking strip, and each row of ultrasonic images comprises a plurality of frames of ultrasonic images;
respectively calculating the ultrasonic image gray value of each frame of each row of ultrasonic images;
taking the frame of ultrasonic image with the minimum gray value in each row of ultrasonic images as a registration reference image of the row of ultrasonic images;
splicing the registration reference images to obtain invalid ultrasonic images, and splicing the effective ultrasonic images positioned at two sides of the registration reference images in each row to obtain ultrasonic scanning images;
the method for splicing the registration reference images to obtain invalid ultrasonic images and splicing the effective ultrasonic images positioned at two sides of the registration reference images in each row to obtain ultrasonic scanning images comprises the following steps:
sequentially splicing the registration reference images in the two adjacent rows of ultrasonic images to obtain an invalid ultrasonic image;
sequentially splicing each frame of effective ultrasonic images positioned at two sides of the registration reference image in each row of ultrasonic images with the effective ultrasonic images at the same position in the adjacent row of ultrasonic images to obtain a plurality of ultrasonic scanning images;
wherein, the registration reference images in two adjacent rows of ultrasonic images are spliced in sequence to obtain an invalid ultrasonic image, and the method comprises the following steps:
splicing the registration reference image in the first row of ultrasonic images and the registration reference image in the second row of ultrasonic images;
splicing the spliced image obtained in the front row with the registration reference image in the ultrasonic image in the current row from the ultrasonic image in the third row to obtain an invalid ultrasonic image;
the effective ultrasonic images of each frame positioned at two sides of the registration reference image in each row of ultrasonic images and the effective ultrasonic images at the same position in the adjacent row of ultrasonic images are spliced in sequence to obtain a plurality of ultrasonic scanning images, and the method comprises the following steps:
calculating the index difference of the registration reference images in the two adjacent rows of ultrasonic images;
splicing each frame of effective ultrasonic images in two adjacent rows of ultrasonic images according to the index difference to obtain a plurality of ultrasonic scanning images;
before the step of calculating the index difference of the registration reference images in the two adjacent rows of ultrasonic images, the method further comprises the following steps:
determining the direction of the index ascending and descending sequence of each row of ultrasonic images, wherein the directions of the index ascending and descending sequences of all rows of ultrasonic images are the same;
when the ascending and descending sequence direction of the indexes of the ultrasonic images in each row is ascending and sequencing along the direction far away from the high-acoustic-impedance identification strip, the ultrasonic image on one side, where the index value of the registration reference image gradually rises, in the ultrasonic images in each row is an effective ultrasonic image of the ultrasonic images in the row, and the image, which can be registered with the adjacent row according to the index difference, in the ultrasonic images on the other side, where the index value of the registration reference image gradually rises, is an effective ultrasonic image;
when the ascending and descending sequence direction of the indexes of the ultrasonic images in each row is descending order along the direction far away from the high-acoustic-impedance identification strip, the ultrasonic image on one side of the ultrasonic images in each row, where the index value of the registration reference image is gradually reduced, is an effective ultrasonic image of the ultrasonic image in the row, and the image capable of being registered with the adjacent row according to the index difference in the ultrasonic images on the other side of the ultrasonic images, where the index value of the registration reference image is gradually reduced, is an effective ultrasonic image.
2. The registration method for ultrasound images according to claim 1, wherein the effective ultrasound images of each frame in the two adjacent rows of ultrasound images are spliced according to the index difference to obtain a plurality of ultrasound scanning images, including:
splicing each frame of effective ultrasonic images in the first row of ultrasonic images with the effective ultrasonic images at the corresponding positions in the second row of ultrasonic images according to a first index difference, wherein the first index difference is the index difference between the first row of ultrasonic images and the second row of ultrasonic images;
and from the third row of ultrasonic images, splicing the spliced image obtained in the front row with the effective ultrasonic image in the current row of ultrasonic images according to a second index difference to obtain a plurality of ultrasonic scanning images, wherein the second index difference is the index difference between the spliced image obtained in the front row and the ultrasonic image in the current row.
3. The registration method for ultrasound images according to claim 1, further comprising:
and respectively carrying out weighted average and filtering processing on the invalid ultrasonic image and each spliced part of each ultrasonic scanning image.
4. An ultrasound device, comprising: a memory communicatively connected to the processor, the memory for storing computer instructions, and the processor for loading and executing the computer instructions to implement the registration method for ultrasound images of any of claims 1 to 3.
5. A computer-readable storage medium, characterized in that computer instructions are stored therein for causing a computer to execute the registration method for ultrasound images of any one of claims 1 to 3.
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