CN103049925A - C-scanned image or D-scanned image processing method based on phased array - Google Patents
C-scanned image or D-scanned image processing method based on phased array Download PDFInfo
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Abstract
The invention relates to a C-scanned image or D-scanned image processing method based on a phased array. The method is characterized by comprising the following steps of (1) setting a B scanned data look-up table of various relevant pixels according to scanning parameters of the phased array; (2) calculating B scanned image data of various relevant pixels according to A scanned data of various relevant points and corresponding weight values in the B scanned data look-up table; (3) selecting B scanned image data corresponding to one relevant plane in a three-dimensional image according to the three-dimensional image formed by the B scanned image data, as original data of a first line C scanned image or D scanned image; (4) forming C scanned image data or D scanned image data according to the original data of the C scanned image or the D scanned image; and (5) forming corresponding C scanned image or D scanned image. The image processing method provided by the invention can be used for ensuring real-time performance for forming the C scanned image or D scanned image during scanning, and further can be used for ensuring imaging coherence.
Description
Technical field
The present invention relates to a kind of disposal route of image, relate in particular to a kind of C scan image based on phased array or D scan image disposal route.
Background technology
Disposal route that Conventional Ultrasound scanning forms C scan image or D scan image is based on the echo data of A sweep, according to being mutual relationship between head angle, echo data time, scanning distance (time) and gate window.Because concerning a conventional transducer (not being phased array), each frame is only processed line data usually, and for same conventional transducer, in scanning process, angle is fixed, so calculated amount is less, can be good at real-time processing.
Yet, phased array is that each frame data comprises multi-thread (normally tens lines) A sweep echo data, and may the corresponding head angle of every line A sweep echo data be different (sector display).If adopt existing conventional ultrasonoscopy disposal route, can introduce in a large number new calculated amount:
(1) because each frame data generally is traditional tens times, so calculated amount rolls up;
(2) if the corresponding head angle of every line A sweep echo data is different, therefore the general cavity that exists on C scan image that front and back two line A sweep echo datas form or D scan image causes imaging discontinuous, process by interpolation calculation.
This shows that the existing conventional ultrasonoscopy disposal route of employing is processed C scan image or the D scan image based on phased array, will have a strong impact on the real-time that forms C scan image or D scan image in the scanning process.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of C scan image based on phased array or D scan image disposal route, this C scan image or D scan image disposal route based on phased array can form C scan image or D scan image fast, guarantee to form in the scanning process real-time of C scan image or D scan image, and guarantee that imaging links up.The technical scheme that adopts is as follows:
C scan image or D scan image disposal route based on phased array is characterized in that comprising the steps:
(1) the B scan-data question blank of each related pixel point is set according to the sweep parameter of phased array, B scan-data question blank is used for depositing the A sweep data of each related pixel point and corresponding weighted value;
(2) according to the A sweep data of each reference point and corresponding weighted value in the B scan-data question blank, calculate the B scan image data of each related pixel point;
(3) stereo-picture that consists of according to the B scan image data is chosen the corresponding B scan image data in a corresponding plane in the stereo-picture, as the raw data of a line C scan image or D scan image;
(4) raw data according to C scan image or D scan image forms C scan image data or D scan image data;
(5) form corresponding C scan image or D scan image according to C scan image data or D scan image data.
This image processing method, with regard to single width C scan image or D scan image, it forms by choosing continuously the plane at B scanning stereo-picture, guarantee the continuity of single width C scan image or D scan image, when the elected face of making even changes, again the plane makes up the C scan image or the D scan image gets final product according to choosing, and guarantees that imaging links up; Aspect the processing of data, only be weighted, choose, relatively wait on the basis of original A sweep data, need not to introduce a large amount of new calculated amount because of the angle variation of probe, need not to adopt complicated computing formula that each pixel is carried out complicated conversion, so that calculated amount reduces in a large number, thereby can form fast C scan image or D scan image, guarantee to form in the scanning process real-time of C scan image or D scan image.
As preferred version of the present invention, in the described step (1), according to the phase-array scanning parameter A sweep data of current pixel point and corresponding weighted value are set, form the pre-service table, the B scan image data that calculates each related pixel point in the described step (2) directly takes out data from the pre-service table.Form the pre-service table, A sweep data, weighted value are carried out buffer memory, further accelerate the speed of imaging.
As preferred version of the present invention, in the described step (2), the single or multiple related pixel points in the B scan-data question blank and corresponding weighted value are multiplied each other, then add up, form the B scan image data of each related pixel point.When the Real-time Obtaining sampled data, table look-up according to current pixel point, and according to A sweep data and the weighted value of in B scan-data question blank, obtaining the reference point pixel, according to A sweep data and weighted value computing, if a plurality of reference points, then be the multiply-add operation between reference point, as: current pixel point data=related pixel point 1* weighting 1+related pixel point 2* weighting 2+...
As preferred version of the present invention, in the described step (4), the formation of C scan image data or D scan image data is to compare rear acquisition by the ranks point with the B scan image data.The B scan image data of the pixel on every row B scan image is compared, obtain peaked B scan image data wherein, every row form 1 point on the C scan image, the most at last a frame Type B image shape being aligned C scan image data.Distance or time during according to scanning, constantly the C scan image data of shape being aligned line finally forms view picture C scan image data.
As preferred version of the present invention, in the described step (5), input color control data, and carry out computing with C scan image data or D scan image data, form gray scale or colored C scan image or D scan image.
Above-mentioned steps (1)～(2) are that pre-service is calculated, and do not affect real-time; Step (3)～(5) are dynamic calculation, and namely each sampled data constantly will be passed through these several steps, to form C scan image or D scan image.When C scanning, when the plane change is chosen in D scanning, repeating step (3)～(5) can rebuild C scan image or D scan image.Through after the above-mentioned steps, data point is kept in the frame buffer, and exchange is presented on the screen.
Said method provides the method that forms C scan image or D scan image, if need to form simultaneously C scan image and D scan image, only need to choose simultaneously two corresponding B scan image datas in plane in step with different angles, and in step (4), form respectively C scan image data and D scan image data, just can in step (5), form respectively C scan image and D scan image.
Description of drawings
Fig. 1 is in the preferred embodiment for the present invention during C scanning imagery, chooses the synoptic diagram on plane;
Fig. 2 is in the preferred embodiment for the present invention during D scanning imagery, chooses the synoptic diagram on plane.
Embodiment
Be described further below in conjunction with accompanying drawing and preferred implementation of the present invention.
This C scan image or D scan image disposal route based on phased array comprise the steps:
(1) the B scan-data question blank of each related pixel point is set according to the sweep parameter of phased array, B scan-data question blank is used for depositing the A sweep data of each related pixel point and corresponding weighted value; According to the phase-array scanning parameter A sweep data of current pixel point and corresponding weighted value are set again, form the pre-service table;
(2) according to the A sweep data of each reference point in the pre-service table and corresponding weighted value, single or multiple related pixel points in the B scan-data question blank and corresponding weighted value are multiplied each other, then add up, form the B scan image data of each related pixel point.
(3) as shown in Figure 1, according to the stereo-picture 1 that the B scan image data consists of, wherein B scan image 2 is along positive apparent direction, and a plane 3(who chooses in the stereo-picture 1 overlooks) corresponding B scan image data, as a line C scan image; Choose another plane 4(side-looking in the stereo-picture 1) corresponding B scan image data, as a line D scan image;
(4) according to the raw data of C scan image and D scan image, the ranks point of B scan image data is compared, form C scan image data and D scan image data;
(5) according to C scan image data and D scan image data, input color control data, and carry out computing with C scan image data or D scan image data, form gray scale or colored C scan image or D scan image.
With regard to single width C scan image or D scan image, it forms by choosing continuously the plane at B scanning stereo-picture, guarantee the continuity of single width C scan image or D scan image, when the elected face of making even changes, again the plane makes up the C scan image or the D scan image gets final product according to choosing, and guarantees that imaging links up; Aspect the processing of data, only be weighted, choose, relatively wait on the basis of original A sweep data, need not to introduce a large amount of new calculated amount because of the angle variation of probe, need not to adopt complicated computing formula that each pixel is carried out complicated conversion, so that calculated amount reduces in a large number, thereby can form fast C scan image or D scan image, guarantee to form in the scanning process real-time of C scan image or D scan image.
In addition; need to prove, the specific embodiment described in this instructions, its each several part titles etc. can be different; allly conceive equivalence or the simple change that described structure, feature and principle are done according to patent of the present invention, be included in the protection domain of patent of the present invention.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (5)
1. based on C scan image or the D scan image disposal route of phased array, it is characterized in that comprising the steps:
(1) the B scan-data question blank of each related pixel point is set according to the sweep parameter of phased array, B scan-data question blank is used for depositing the A sweep data of each related pixel point and corresponding weighted value;
(2) according to the A sweep data of each reference point and corresponding weighted value in the B scan-data question blank, calculate the B scan image data of each related pixel point;
(3) stereo-picture that consists of according to the B scan image data is chosen the corresponding B scan image data in a corresponding plane in the stereo-picture, as the raw data of a line C scan image or D scan image;
(4) raw data according to C scan image or D scan image forms C scan image data or D scan image data;
(5) form corresponding C scan image or D scan image according to C scan image data or D scan image data.
2. C scan image or D scan image disposal route based on phased array as claimed in claim 1, it is characterized in that: in the described step (1), according to the phase-array scanning parameter A sweep data of current pixel point and corresponding weighted value are set, form the pre-service table, the B scan image data that calculates each related pixel point in the described step (2) directly takes out data from the pre-service table.
3. C scan image or D scan image disposal route based on phased array as claimed in claim 1, it is characterized in that: in the described step (2), single or multiple related pixel points in the B scan-data question blank and corresponding weighted value are multiplied each other, then add up, form the B scan image data of each related pixel point.
4. C scan image or D scan image disposal route based on phased array as claimed in claim 1, it is characterized in that: in the described step (4), the formation of C scan image data or D scan image data is to compare rear acquisition by the ranks point with the B scan image data.
5. C scan image or D scan image disposal route based on phased array as claimed in claim 1, it is characterized in that: in the described step (5), the input color control data, and carry out computing with C scan image data or D scan image data, form gray scale or colored C scan image or D scan image.
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Cited By (1)
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| CN103969335A (en) * | 2013-06-27 | 2014-08-06 | 南车青岛四方机车车辆股份有限公司 | Automatic ultrasonic imaging and visualization method for welding-seam sidewall incomplete fusion |
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| CN103969335A (en) * | 2013-06-27 | 2014-08-06 | 南车青岛四方机车车辆股份有限公司 | Automatic ultrasonic imaging and visualization method for welding-seam sidewall incomplete fusion |
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Address after: 515041 No. 77 Jinsha Road, Guangdong, Shantou Patentee after: Shantou Ultrasonic Instrument Research Institute Co., Ltd Address before: 515041 No. 77 Jinsha Road, Jinping District, Guangdong, Shantou Patentee before: SHANTOU INSTITUTE OF ULTRASONIC INSTRUMENTS Co.,Ltd. |