CN111275639A - Method and terminal for correcting line pixel defect of X-ray image - Google Patents
Method and terminal for correcting line pixel defect of X-ray image Download PDFInfo
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- 238000004590 computer program Methods 0.000 claims description 8
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Abstract
The invention discloses a method and a terminal for correcting line pixel defects of an X-ray image, wherein the method comprises the following steps: acquiring a line pixel defect to be repaired of an X-ray image; when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence; and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction. And performing rough correction, deglitch fringe correction and fine correction on line pixel defects parallel to the grid fringe line direction in sequence, and performing vertical correction and deglitch fringe correction on line pixel defects vertical to the grid fringe line direction in sequence, so that artifacts do not appear in a corrected image.
Description
Technical Field
The invention relates to the technical field of image processing, in particular to a method and a terminal for correcting line pixel defects of an X-ray image.
Background
The conventional image line pixel defect correction method firstly needs to position line pixel defect coordinates, and has two modes of manual positioning and automatic positioning. Firstly, shooting an X-ray aerogram at a certain radiation dose, manually positioning, namely detecting abnormality through human eyes, and recording line pixel coordinates; the automatic positioning is to detect the abnormality of the row pixel and the peripheral row by a certain algorithm, and record the coordinates of the line pixel if the abnormal number of the row pixel exceeds a certain threshold value.
The existing method can solve the 1 or 2 line pixel defect in the common image to a certain extent, however, if a grid (i.e. anti-scatter grid, commonly used in X-ray imaging for filtering scattered rays) is adopted when the X-ray image is acquired, a periodic grid signal as shown in fig. 1 may appear in the figure (i.e. one period is 5 lines of pixels). If the existing method is adopted to repair the line pixel defect in the image with the grid lines, the period of the repaired line pixel is inconsistent with the period of the grid lines.
The grid lines in the X-ray image can interfere with the image judgment result, so the grid lines need to be removed through grid line correction. The existing grating fringe correction is realized by a band-pass filter based on image Fourier transform, and if the gray scale period at the line pixel defect is inconsistent with the pixels of the peripheral lines, ringing-shaped artifacts can appear after the grating fringe correction.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided are a method and a terminal for correcting a line pixel defect of an X-ray image, which do not cause an artifact after correction.
In order to solve the technical problems, the invention adopts the technical scheme that:
a method of line pixel defect correction of an X-ray image, comprising:
acquiring a line pixel defect to be repaired of an X-ray image;
when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence;
and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction.
The invention adopts another technical scheme that:
a line pixel defect correction terminal for X-ray images, comprising a memory, a processor and a computer program stored on said memory and executable on the processor, said processor implementing the following steps when executing said computer program:
acquiring a line pixel defect to be repaired of an X-ray image;
when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence;
and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction.
The invention has the beneficial effects that: and performing rough correction, deglitch fringe correction and fine correction on line pixel defects parallel to the grid fringe line direction in sequence, and performing vertical correction and deglitch fringe correction on line pixel defects vertical to the grid fringe line direction in sequence, so that artifacts do not appear in a corrected image.
Drawings
FIG. 1 is a schematic diagram of a periodic raster signal;
FIG. 2 is a flowchart illustrating a method for correcting line pixel defects in an X-ray image according to a first embodiment of the present invention;
FIG. 3 is a diagram illustrating a line pixel defect parallel to a grid line direction according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a line pixel defect perpendicular to a grid line direction according to a first embodiment of the present invention;
fig. 5 is a schematic diagram of a line pixel defect correction terminal of an X-ray image according to a second embodiment of the present invention.
Description of reference numerals:
100. a line pixel defect correction terminal; 1. a memory; 2. a processor.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: and performing rough correction, deglitch fringe correction and fine correction on line pixel defects parallel to the grid fringe line direction in sequence, and performing vertical correction and deglitch fringe correction on line pixel defects vertical to the grid fringe line direction in sequence, so that artifacts do not appear in a corrected image.
Referring to fig. 2, a method for correcting line pixel defects of an X-ray image includes:
acquiring a line pixel defect to be repaired of an X-ray image;
when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence;
and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction.
From the above description, the beneficial effects of the present invention are: and performing rough correction, deglitch fringe correction and fine correction on line pixel defects parallel to the grid fringe line direction in sequence, and performing vertical correction and deglitch fringe correction on line pixel defects vertical to the grid fringe line direction in sequence, so that artifacts do not appear in a corrected image.
Further, the rough correction specifically includes:
acquiring a pixel interval of an X-ray detector, and calculating according to the pixel interval to obtain a sampling frequency;
acquiring a grid line pair, and calculating according to the grid line pair to obtain a grid frequency;
calculating to obtain the estimated frequency of the grid according to the sampling frequency and the grid frequency;
calculating to obtain the actual period of the image grid lines according to the sampling frequency and the estimated frequency of the grid lines;
calculating to obtain a line pixel defect repairing interval according to the actual period of the image grid lines;
and correcting the pixel defects of the lines to be repaired according to the line pixel defect repairing interval.
Further, the correcting the line pixel defect to be repaired according to the line pixel defect repairing interval specifically comprises:
acquiring two interval pixels corresponding to any point in the line pixel defects to be repaired according to the line pixel defect repairing interval;
and carrying out weighted average on the gray values of the two spaced pixels to obtain the gray value after rough correction.
As can be seen from the above description, the weight of the weighted average can be set as desired.
Further, the fine correction specifically includes:
and performing linear interpolation or low-pass filtering processing on each pixel point in the pixel defect of the line to be repaired after the stripe correction of the grid is removed.
Further, the vertical correction specifically includes:
acquiring two pixels adjacent to any point in the pixel defects of the line to be repaired, wherein the connecting line of the two pixels is vertical to the direction of the pixel defects to be repaired;
and carrying out weighted average on the gray values of the two pixels to obtain the gray value after vertical correction.
Referring to fig. 5, another technical solution related to the present invention is:
a line pixel defect correction terminal 100 for X-ray images, comprising a memory 1, a processor 2 and a computer program stored on said memory 1 and executable on the processor 2, said processor 2 realizing the following steps when executing said computer program:
acquiring a line pixel defect to be repaired of an X-ray image;
when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence;
and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction.
Further, the rough correction specifically includes:
acquiring a pixel interval of an X-ray detector, and calculating according to the pixel interval to obtain a sampling frequency;
acquiring a grid line pair, and calculating according to the grid line pair to obtain a grid frequency;
calculating to obtain the estimated frequency of the grid according to the sampling frequency and the grid frequency;
calculating to obtain the actual period of the image grid lines according to the sampling frequency and the estimated frequency of the grid lines;
calculating to obtain a line pixel defect repairing interval according to the actual period of the image grid lines;
and correcting the pixel defects of the lines to be repaired according to the line pixel defect repairing interval.
Further, the correcting the line pixel defect to be repaired according to the line pixel defect repairing interval specifically comprises:
acquiring two interval pixels corresponding to any point in the line pixel defects to be repaired according to the line pixel defect repairing interval;
and carrying out weighted average on the gray values of the two spaced pixels to obtain the gray value after rough correction.
Further, the fine correction specifically includes:
and performing linear interpolation or low-pass filtering processing on each pixel point in the pixel defect of the line to be repaired after the stripe correction of the grid is removed.
Further, the vertical correction specifically includes:
acquiring two pixels adjacent to any point in the pixel defects of the line to be repaired, wherein the connecting line of the two pixels is vertical to the direction of the pixel defects to be repaired;
and carrying out weighted average on the gray values of the two pixels to obtain the gray value after vertical correction.
Example one
Referring to fig. 2 to 4, a first embodiment of the present invention is:
a method of line pixel defect correction of an X-ray image, comprising the steps of:
and S1, acquiring the pixel defect of the line to be repaired of the X-ray image.
In this embodiment, whether a defect exists can be checked by automatically calculating the gray value of the pixel, and if the defect exists, the defect is marked.
And S2, when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, sequentially performing rough correction, grid stripe removing correction and fine correction.
In this embodiment, the rough correction specifically includes:
and S21, acquiring the pixel spacing of the X-ray detector, and calculating according to the pixel spacing to obtain the sampling frequency.
Suppose that a pixel matrix of 3072X 3072pixels is used21536 × 1536pixels can be obtained by using binning mode2Or 768 × 768pixels2The three modes are abbreviated as 3k, 1.5k and 1k, and the imaging area of the detector is 17 multiplied by 17inches2Therefore, the pixel pitches of the pixels are 0.139mm/pixel, 0.278mm/pixel and 0.417mm/pixel, respectively. According to the formula
Calculating to obtain the sampling frequency f of the detectorsThe three modes of this example are 7.194pixel/mm, 3.60pixel/mm and 2.398pixel/mm, respectively.
And S22, acquiring a grid line pair, and calculating according to the grid line pair to obtain the grid frequency.
Assuming that the used grid line pair is 40lp/cm, the grid frequency fgIs 4 lp/mm.
And S23, calculating the estimated grid frequency according to the sampling frequency and the grid frequency.
According to the formula
Calculating to obtain the estimated frequency f of the gride. Therefore f at 3k, 1.5k and 1ke3.194pixel/mm, 0.4pixel/mm and 1.6pixel/mm, respectively.
And S24, calculating to obtain the actual period of the image grid lines according to the sampling frequency and the estimated frequency of the grid lines.
According to the formula
And calculating to obtain the actual period T of the image grid lines. Therefore, the actual periods T of the 3k, 1.5k and 1k image grid lines are respectively 2.25 pixels, 9 pixels and 1.5 pixels, and if the decimal number in T is less than 0.3 or more than 0.7, the rounding is performed nearby; if the decimal is greater than 0.3 or less than 0.7, a coefficient is multiplied to make it an integer, so T is 2pixels, 9 pixels, and 3 pixels, respectively.
And S25, calculating the line pixel defect repair distance according to the actual period of the image grid pattern.
According to the formula
The line pixel defect repair pitch gap is calculated so that the gap for 3k, 1.5k and 1k are 1pixel, 0 and 2pixel, respectively.
And S26, correcting the line pixel defect to be repaired according to the line pixel defect repairing interval.
In this embodiment, step S26 specifically includes:
s261, two interval pixels corresponding to any point in the line pixel defects to be repaired are obtained according to the line pixel defect repairing interval.
Assuming that the direction of the grid lines is the horizontal direction and the pixel defect repair interval of the 1k image lines is 2, pixels with two lines of intervals are taken to correct pixel points in pixel defects of lines to be repaired. As shown in fig. 3, assuming that the line pixel defect to be repaired in row 4, the line pixel defect is corrected by using the pixels corresponding to row 1 and row 7.
And S262, carrying out weighted average on the gray values of the two interval pixels to obtain the gray value after rough correction.
When weighted averaging is performed, the pixels in row 1 and row 7 are each weighted by 0.5. Further, if a line pixel defect occurs in the 3 rd row, it is corrected in the same manner using the 0 th and 6 th rows. After the method is adopted for correction, artifacts cannot occur.
In this embodiment, the fine correction specifically includes: and performing linear interpolation or low-pass filtering processing on each pixel point in the pixel defect of the line to be repaired after the stripe correction of the grid is removed. Periodic grid lines in the image are eliminated after the grid line removing correction, so that the influence of the grid lines does not need to be considered in fine correction. In addition, the image edge information may be affected due to the large repair interval in the rough correction. So the line pixel fine correction is performed again by linear interpolation or low-pass filtering process (i.e. windowed smoothing) using the neighborhood pixels. The low-pass filtering process may be performed by using a gaussian filter having a window size of 3 × 3 and σ of 2.
And S3, when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid streak correction.
In this embodiment, the vertical correction specifically includes:
and S31, obtaining two pixels adjacent to any point in the pixel defects of the line to be repaired, wherein the connecting line of the two pixels is vertical to the direction of the pixel defects to be repaired.
As shown in fig. 4, assuming that the horizontal direction is the direction of the grid lines, when a line pixel defect occurs in the 2 nd column, it needs to be corrected with the pixels of the 1 st column and the 3 rd column.
And S32, carrying out weighted average on the gray values of the two pixels to obtain the gray value after vertical correction. That is, the gray values of the corresponding pixels in the 1 st column and the 3 rd column are weighted and averaged to be the corrected gray value in the 2 nd column. The method can be used for correcting without artifacts.
In this embodiment, the grid streak correction of the deglitch can be performed by specifically referring to chinese patent application No. 201410062484.2, which specifically discloses a method and a system for removing grid streaks of an X-ray image grid. Note that the order of step S2 and step S3 may be exchanged.
Example two
Referring to fig. 5, a second embodiment of the present invention is:
a line pixel defect correction terminal 100 for X-ray images, corresponding to the method of the first embodiment, comprising a memory 1, a processor 2 and a computer program stored on the memory 1 and executable on the processor 2, the processor 2 implementing the following steps when executing the computer program:
acquiring a line pixel defect to be repaired of an X-ray image;
when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence;
and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction.
Further, the rough correction specifically includes:
acquiring a pixel interval of an X-ray detector, and calculating according to the pixel interval to obtain a sampling frequency;
acquiring a grid line pair, and calculating according to the grid line pair to obtain a grid frequency;
calculating to obtain the estimated frequency of the grid according to the sampling frequency and the grid frequency;
calculating to obtain the actual period of the image grid lines according to the sampling frequency and the estimated frequency of the grid lines;
calculating to obtain a line pixel defect repairing interval according to the actual period of the image grid lines;
and correcting the pixel defects of the lines to be repaired according to the line pixel defect repairing interval.
Further, the correcting the line pixel defect to be repaired according to the line pixel defect repairing interval specifically comprises:
acquiring two interval pixels corresponding to any point in the line pixel defects to be repaired according to the line pixel defect repairing interval;
and carrying out weighted average on the gray values of the two spaced pixels to obtain the gray value after rough correction.
Further, the fine correction specifically includes:
and performing linear interpolation or low-pass filtering processing on each pixel point in the pixel defect of the line to be repaired after the stripe correction of the grid is removed.
Further, the vertical correction specifically includes:
acquiring two pixels adjacent to any point in the pixel defects of the line to be repaired, wherein the connecting line of the two pixels is vertical to the direction of the pixel defects to be repaired;
and carrying out weighted average on the gray values of the two pixels to obtain the gray value after vertical correction.
In summary, according to the method and the terminal for correcting line pixel defects of an X-ray image provided by the present invention, coarse correction, grid streak removal correction, and fine correction are sequentially performed on line pixel defects parallel to a grid streak line direction, and vertical correction and grid streak removal correction are sequentially performed on line pixel defects perpendicular to the grid streak line direction, so that artifacts do not occur in a corrected image.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for correcting line pixel defects of an X-ray image, comprising:
acquiring a line pixel defect to be repaired of an X-ray image;
when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence;
and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction.
2. Method for the correction of line pixel defects of an X-ray image according to claim 1, characterized in that said rough correction comprises in particular:
acquiring a pixel interval of an X-ray detector, and calculating according to the pixel interval to obtain a sampling frequency;
acquiring a grid line pair, and calculating according to the grid line pair to obtain a grid frequency;
calculating to obtain the estimated frequency of the grid according to the sampling frequency and the grid frequency;
calculating to obtain the actual period of the image grid lines according to the sampling frequency and the estimated frequency of the grid lines;
calculating to obtain a line pixel defect repairing interval according to the actual period of the image grid lines;
and correcting the pixel defects of the lines to be repaired according to the line pixel defect repairing interval.
3. The method for correcting line pixel defects of an X-ray image according to claim 2, wherein the correcting line pixel defects to be repaired according to the line pixel defect repair pitch specifically comprises:
acquiring two interval pixels corresponding to any point in the line pixel defects to be repaired according to the line pixel defect repairing interval;
and carrying out weighted average on the gray values of the two spaced pixels to obtain the gray value after rough correction.
4. Method for line pixel defect correction of an X-ray image according to claim 1, characterized in that the fine correction is in particular:
and performing linear interpolation or low-pass filtering processing on each pixel point in the pixel defect of the line to be repaired after the stripe correction of the grid is removed.
5. Method for the correction of line pixel defects of an X-ray image according to claim 1, characterized in that the vertical correction is in particular:
acquiring two pixels adjacent to any point in the pixel defects of the line to be repaired, wherein the connecting line of the two pixels is vertical to the direction of the pixel defects to be repaired;
and carrying out weighted average on the gray values of the two pixels to obtain the gray value after vertical correction.
6. A line pixel defect correction terminal for X-ray images, comprising a memory, a processor and a computer program stored on said memory and executable on the processor, characterized in that said processor, when executing said computer program, implements the steps of:
acquiring a line pixel defect to be repaired of an X-ray image;
when the pixel defect of the line to be repaired is parallel to the direction of the grid lines, performing rough correction, grid line de-filtering correction and fine correction in sequence;
and when the pixel defect of the line to be repaired is vertical to the direction of the grid line, sequentially performing vertical correction and grid line de-filtering correction.
7. Line pixel defect correction terminal for X-ray images according to claim 6, characterized in that said rough correction comprises in particular:
acquiring a pixel interval of an X-ray detector, and calculating according to the pixel interval to obtain a sampling frequency;
acquiring a grid line pair, and calculating according to the grid line pair to obtain a grid frequency;
calculating to obtain the estimated frequency of the grid according to the sampling frequency and the grid frequency;
calculating to obtain the actual period of the image grid lines according to the sampling frequency and the estimated frequency of the grid lines;
calculating to obtain a line pixel defect repairing interval according to the actual period of the image grid lines;
and correcting the pixel defects of the lines to be repaired according to the line pixel defect repairing interval.
8. The terminal for correcting line pixel defects of an X-ray image according to claim 7, wherein the correcting the line pixel defects to be repaired according to the line pixel defect repair pitch specifically comprises:
acquiring two interval pixels corresponding to any point in the line pixel defects to be repaired according to the line pixel defect repairing interval;
and carrying out weighted average on the gray values of the two spaced pixels to obtain the gray value after rough correction.
9. Line pixel defect correction terminal for X-ray images according to claim 6, characterized in that the fine correction is in particular:
and performing linear interpolation or low-pass filtering processing on each pixel point in the pixel defect of the line to be repaired after the stripe correction of the grid is removed.
10. Line pixel defect correction terminal for X-ray images according to claim 6, characterized in that the vertical correction is in particular:
acquiring two pixels adjacent to any point in the pixel defects of the line to be repaired, wherein the connecting line of the two pixels is vertical to the direction of the pixel defects to be repaired;
and carrying out weighted average on the gray values of the two pixels to obtain the gray value after vertical correction.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011105388A1 (en) * | 2010-02-24 | 2011-09-01 | 株式会社 日立メディコ | X-ray image diagnosis device, and medical image processing program and method |
| CN104077743A (en) * | 2013-03-25 | 2014-10-01 | 深圳市蓝韵实业有限公司 | Suppression method and device for grid artifact in X-ray image |
| CN108009994A (en) * | 2017-10-25 | 2018-05-08 | 沈阳东软医疗系统有限公司 | A kind of bad wire restoration method, apparatus and equipment |
| CN108601574A (en) * | 2016-02-29 | 2018-09-28 | 株式会社日立制作所 | X-ray detector, X ray CT device, detection method of X-ray and X-ray detection program |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011105388A1 (en) * | 2010-02-24 | 2011-09-01 | 株式会社 日立メディコ | X-ray image diagnosis device, and medical image processing program and method |
| CN102770075A (en) * | 2010-02-24 | 2012-11-07 | 株式会社日立医疗器械 | X-ray image diagnosis device, and medical image processing program and method |
| CN104077743A (en) * | 2013-03-25 | 2014-10-01 | 深圳市蓝韵实业有限公司 | Suppression method and device for grid artifact in X-ray image |
| CN108601574A (en) * | 2016-02-29 | 2018-09-28 | 株式会社日立制作所 | X-ray detector, X ray CT device, detection method of X-ray and X-ray detection program |
| CN108009994A (en) * | 2017-10-25 | 2018-05-08 | 沈阳东软医疗系统有限公司 | A kind of bad wire restoration method, apparatus and equipment |
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