CN110085192A - A kind of calibration method of medical display colour curve - Google Patents
A kind of calibration method of medical display colour curve Download PDFInfo
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- CN110085192A CN110085192A CN201910255849.6A CN201910255849A CN110085192A CN 110085192 A CN110085192 A CN 110085192A CN 201910255849 A CN201910255849 A CN 201910255849A CN 110085192 A CN110085192 A CN 110085192A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
- G16H40/63—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
Abstract
The present invention discloses a kind of calibration method of medical display colour curve, specifically comprise the following steps: to establish RGB coordinate system, and construct display color coordinate and the relationship of RGB, the RGB coordinate system constructed according to the step SS1, the cube that a length of N of a rib is taken in the RGB coordinate system, sets the apex coordinate of cube；Obtain the color coordinates (X, Y, Z) on each vertex；According to color coordinates analytical function, and predict that the rgb value of first point of aim curve is (R1, G1, B1)；According to the rgb value (R1, G1, B1) of prediction, the center of marching cube to (R1, G1, B1), and reacquire the color coordinates of cube apex；According to the color coordinates of cube apex, the color coordinates of target point is judged whether in cube, if not existing, the color coordinates obtained using the step SS4 is optimized analytical function, and predicted again, until target point is included in cube.The colour curve precision and speed of present invention raising medical display.
Description
Technical field
The present invention relates to a kind of calibration methods of medical display colour curve, belong to medical field of display technology.
Background technique
In recent years, computer based Multi-media image processing technology is widely applied in the fields such as medical imaging, greatly
Ground enriches the diagnostic means of doctor；For the diagosis quality for promoting doctor, the display capabilities of display are improved, to medical display
Curve requirement be not also only requirement in brightness, have the requirement of corresponding chromaticity coordinate to every single order brightness, even
In order to further enhance the display capabilities of display, the chromaticity coordinate of the every single order of display is required also have differences.
To not being able to satisfy life in this traditional color, the method for brightness curve separate calibration either precision or speed
Produce the demand with display.
Therefore, it is calibrated while realizing medical display color with brightness, not only improves medical display color graph color
With the accuracy of brightness, unnecessary error is reduced, and shows more image informations, facilitates doctor and improves medical diagnosis
Efficiency and accuracy rate.
Summary of the invention
Limitation of the present invention for traditional medicine display in color of image calibration curve, that is, curve, color when calibrating
Separate calibration causes final calibration error bigger, the time long requirement for not being able to satisfy application, provides a kind of for doctor
With the calibration method of display color curve, the colour curve precision and speed of medical display are improved, doctor is further promoted
The accuracy of diagosis.
The present invention adopts the following technical scheme: a kind of calibration method of medical display colour curve, which is characterized in that tool
Body includes the following steps:
Step SS1: establishing RGB coordinate system, and constructs display color coordinate and the relationship of RGB, X=f (R, G, B), Y=f
(R, G, B), Z=f (R, G, B)；
Step SS2: the RGB coordinate system constructed according to the step SS1 takes a length of N's of a rib in the RGB coordinate system
Cube, the apex coordinate of cube are respectively (0,0,0), (0,0, N), (0, N, 0), (0, N, N), (N, 0,0), (N, 0, N),
(N, N, 0), (N, N, N)；Obtain the color coordinates (X, Y, Z) on each vertex；
Step SS3: (X, Y, Z) analytical function: X=f (R, G, B), Y=f (R, G, B), Z is obtained according to the step SS2
=f (R, G, B), and predict that the rgb value of first point of aim curve is (R1, G1, B1)；
Step SS4: the rgb value (R1, G1, B1) predicted according to the step SS3, the center of marching cube to (R1,
G1, B1), and reacquire the color coordinates (X, Y, Z) of cube apex；
Step SS5: according to the color coordinates (X, Y, Z) of the step SS4 cube apex obtained, judge target point
Whether (X, Y, Z) be in cube, if not existing, the color coordinates (X, Y, Z) obtained using the step SS4, and optimization parsing
Function, and predict again, until target point is included in cube；
Step SS6: according to the step SS5 obtain cube apex color coordinates (X, Y, Z), interpolation calculation go out cube
(X, Y, the Z) of each internal RGB；
Step SS7: according to the interpolation result of step SS6, the first color of distance objective curve is calculated in cube most
Close point, as the first of aim curve value；
Step SS8: according to step SS5 measure or calculate color coordinates (X, Y, Z) optimization analytical function X=f (R, G,
B), Y=f (R, G, B), Z=f (R, G, B)；
Step SS9: repeating said steps SS4, the step SS5, the step SS6, the step SS7 and the step
SS8 finds out the value of aim curve all the points.
As a kind of preferred embodiment, color coordinates in the step SS1 including but not limited to: XYZ coordinate,
The coordinate of Lab space；The conversion of color space is carried out in calculating process, while using multiple color space.
As a kind of preferred embodiment, the long N of the cube rib in the step SS2 is simultaneously not fixed, according to precision
Or the needs calculated are adjusted.
As a kind of preferred embodiment, the analytical function in the step SS3 includes but is not limited to any in following
Kind: polynomial function, GAMMA function.
As a kind of preferred embodiment, the color coordinate values for obtaining cube apex include but is not limited to lower section
Any one of formula: mode one, with the color coordinates on each vertex of color measuring apparatus actual measurement cube；Mode two, uses face
The Partial Feature of color measuring device measurement display recycles the spy measured such as the color coordinates on RGB coordinate system internal coordinate axis
Sign point calculates the color coordinates on each vertex of cube.
As a kind of preferred embodiment, the step SS5 is specifically included: target point includes and a cube intracorporal judgement side
Formula is as follows: assuming that the color coordinates of target point is (Xg, Yg, Zg)；X, Y and Z of each vertex color coordinate of cube take its maximum
Value Xmax, Ymax, Zmax, minimum value Xmin, Ymin, Zmin；
Simultaneously meet following relationship then assertive goal point in cube:
Xmin<Xg<Xmax；
Ymin<Yg<Ymax；
Zmin<Zg<Zmax。
As a kind of preferred embodiment, the interpolation method in the step SS6 includes but is not limited in following
It is any: linear interpolation；Spline interpolation；Polynomial interopolation.
As a kind of preferred embodiment, the immediate point of the color in the step SS7 carries out as follows
Judgement: the distance of target color coordinate (Xg, Yg, Zg) Yu any color coordinates (X, Y, Z) are set are as follows:
Wherein a, b, c are the weight coefficient of each color component, and the weight coefficient is adjusted according to the variation of application scenarios
It is whole.
Advantageous effects of the invention: first, the present invention breaks through the calibration curve brightness of traditional medicine display color
It is not able to satisfy practical need with brightness when limitation, i.e. display color calibration curve in color double precision ability and color accuracy
It wants, proposes the calibration method of a kind of pair of medical display colour curve, to realize the calibration to medical display colour curve
Process；Second, a kind of calibration method of medical display colour curve of the invention is not only realized bent to medical display color
The calibration of line, and the accurate and speed of medical display colour curve calibration is improved, further improve medical display
Curve representation ability；Third, a kind of calibration method of medical display colour curve of the invention, and realize to medical display
The volume of colour curve is calibrated, and is applicable not only to the calibration of display curve, and be also applied for the corresponding output of any input RGB
Calibration；4th, a kind of calibration method of medical display colour curve of the invention, and realize the school of display color curve
Standard can be calculated completion automatically by host computer, and the look-up table for then establishing a medical display colour curve is put into display,
To greatly save the image processing resource of medical display itself.
Detailed description of the invention
Fig. 1 is the schematic diagram for the RGB coordinate system that the method for the present invention is established.
Fig. 2 is the schematic diagram of the cube of a length of N of rib used by the method for the present invention.
Fig. 3 is that target point of the invention searches flow chart.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
The present invention proposes a kind of calibration method of medical display colour curve, specifically comprises the following steps:
Step SS1: establishing RGB coordinate system, as shown in Figure 1, and construct display color coordinate and the relationship of RGB, X=f (R,
G, B), Y=f (R, G, B), Z=f (R, G, B)；
Step SS2: the RGB coordinate system constructed according to the step SS1 takes a length of N's of a rib in the RGB coordinate system
Cube, as shown in Fig. 2, the apex coordinate of cube is respectively (0,0,0), (0,0, N), (0, N, 0), (0, N, N), (N, 0,
0), (N, 0, N), (N, N, 0), (N, N, N)；Obtain the color coordinates (X, Y, Z) on each vertex；
Step SS3: (X, Y, Z) analytical function: X=f (R, G, B), Y=f (R, G, B), Z is obtained according to the step SS2
=f (R, G, B), and predict that the rgb value of first point of aim curve is (R1, G1, B1)；
Step SS4: the rgb value (R1, G1, B1) predicted according to the step SS3, the center of marching cube to (R1,
G1, B1), and reacquire the color coordinates (X, Y, Z) of cube apex；
Step SS5: as shown in figure 3, according to the color coordinates (X, Y, Z) of the step SS4 cube apex obtained, sentence
Whether (X, Y, the Z) of disconnected target point be in cube, if not existing, the color coordinates that is obtained using the step SS4 (X, Y,
Z), optimize analytical function, and predict again, until target point is included in cube；
Step SS6: according to the step SS5 obtain cube apex color coordinates (X, Y, Z), interpolation calculation go out cube
(X, Y, the Z) of each internal RGB；
Step SS7: according to the interpolation result of step SS6, the first color of distance objective curve is calculated in cube most
Close point, as the first of aim curve value；
Step SS8: according to step SS5 measure or calculate color coordinates (X, Y, Z) optimization analytical function X=f (R, G,
B), Y=f (R, G, B), Z=f (R, G, B)；
Step SS9: repeating said steps SS4, the step SS5, the step SS6, the step SS7 and the step
SS8 finds out the value of aim curve all the points.
As a kind of preferred embodiment, color coordinates in the step SS1 including but not limited to: XYZ coordinate,
The coordinate of Lab space；The conversion of color space is carried out in calculating process, while using multiple color space.
As a kind of preferred embodiment, the long N of the cube rib in the step SS2 is simultaneously not fixed, according to precision
Or the needs calculated are adjusted.
As a kind of preferred embodiment, the analytical function in the step SS3 includes but is not limited to any in following
Kind: polynomial function, GAMMA function.
As a kind of preferred embodiment, the color coordinate values for obtaining cube apex include but is not limited to lower section
Any one of formula: mode one, with the color coordinates on each vertex of color measuring apparatus actual measurement cube；Mode two, uses face
The Partial Feature of color measuring device measurement display recycles the spy measured such as the color coordinates on RGB coordinate system internal coordinate axis
Sign point calculates the color coordinates on each vertex of cube.
As a kind of preferred embodiment, the step SS5 is specifically included: target point includes and a cube intracorporal judgement side
Formula is as follows: assuming that the color coordinates of target point is (Xg, Yg, Zg)；X, Y and Z of each vertex color coordinate of cube take its maximum
Value Xmax, Ymax, Zmax, minimum value Xmin, Ymin, Zmin；
Simultaneously meet following relationship then assertive goal point in cube:
Xmin<Xg<Xmax；
Ymin<Yg<Ymax；
Zmin<Zg<Zmax。
As a kind of preferred embodiment, the interpolation method in the step SS6 includes but is not limited in following
It is any: linear interpolation；Spline interpolation；Polynomial interopolation.
As a kind of preferred embodiment, the immediate point of the color in the step SS7 carries out as follows
Judgement: the distance of target color coordinate (Xg, Yg, Zg) Yu any color coordinates (X, Y, Z) are set are as follows:
Wherein a, b, c are the weight coefficient of each color component, and the weight coefficient is adjusted according to the variation of application scenarios
It is whole.
The beneficial effects obtained by the present invention are as follows are as follows: first, it is bright that the present invention breaks through traditional medicine display color calibration curve
Degree with color double precision ability on limitation, i.e. display color calibration curve when brightness and color accuracy be not able to satisfy reality
It needs, proposes the calibration method of a kind of pair of medical display colour curve, to realize the school to medical display colour curve
Quasi- process；Second, a kind of calibration method of medical display colour curve of the invention is not only realized to medical display color
The calibration of curve, and the accurate and speed of medical display colour curve calibration is improved, further improve medical display
Device curve representation ability；Third, a kind of calibration method of medical display colour curve of the invention, and realize to medical display
The volume of device colour curve is calibrated, and is applicable not only to the calibration of display curve, and it is corresponding defeated to be also applied for any input RGB
It calibrates out；4th, a kind of calibration method of medical display colour curve of the invention, and realize the school of display color curve
Standard can be calculated completion automatically by host computer, and the look-up table for then establishing a medical display colour curve is put into display,
To greatly save the image processing resource of medical display itself.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of calibration method of medical display colour curve, which is characterized in that specifically comprise the following steps:
Step SS1: establishing RGB coordinate system, and constructs display color coordinate and the relationship of RGB, X=f (R, G, B), Y=f (R, G,
B), Z=f (R, G, B)；
Step SS2: the RGB coordinate system constructed according to the step SS1 takes cube of a length of N of a rib in the RGB coordinate system
Body, the apex coordinate of cube are respectively (0,0,0), (0,0, N), (0, N, 0), (0, N, N), (N, 0,0), (N, 0, N), (N,
N, 0), (N, N, N)；Obtain the color coordinates (X, Y, Z) on each vertex；
Step SS3: (X, Y, Z) analytical function: X=f (R, G, B), Y=f (R, G, B), Z=f is obtained according to the step SS2
(R, G, B), and predict that the rgb value of first point of aim curve is (R1, G1, B1)；
Step SS4: the rgb value (R1, G1, B1) predicted according to the step SS3, the center of marching cube to (R1, G1,
B1), and the color coordinates (X, Y, Z) of cube apex is reacquired；
Step SS5: according to the step SS4 obtain cube apex color coordinates (X, Y, Z), judge target point (X,
Y, Z) whether in cube, if not existing, the color coordinates (X, Y, Z) obtained using the step SS4, optimization parsing letter
Number, and predict again, until target point is included in cube；
Step SS6: the cube apex color coordinates (X, Y, Z) obtained according to the step SS5, interpolation calculation goes out in cube
(X, Y, the Z) of each RGB；
Step SS7: according to the interpolation result of step SS6, it is closest to calculate the first color of distance objective curve in cube
Point, as the first of aim curve be worth；
Step SS8: the color coordinates (X, Y, Z) for being measured or being calculated according to step SS5 optimizes analytical function X=f (R, G, B), Y=
F (R, G, B), Z=f (R, G, B)；
Step SS9: repeating said steps SS4, the step SS5, the step SS6, the step SS7 and the step SS8
Find out the value of aim curve all the points.
2. a kind of calibration method of medical display colour curve according to claim 1, which is characterized in that the step
Color coordinates in SS1 is including but not limited to the coordinate of XYZ coordinate, Lab space；Color space is carried out in calculating process
Conversion, while use multiple color space.
3. a kind of calibration method of medical display colour curve according to claim 1, which is characterized in that the step
The long N of the cube rib in SS2 is simultaneously not fixed, and is adjusted according to precision or the needs of calculating.
4. a kind of calibration method of medical display colour curve according to claim 1, which is characterized in that the step
Analytical function in SS3 includes but is not limited to any one of following: polynomial function, GAMMA function.
5. a kind of calibration method of medical display colour curve according to claim 1, which is characterized in that the acquisition
The color coordinate values of cube apex any one of include, but are not limited to, the following ways: mode one, with color measuring apparatus reality
The color coordinates on border measurement each vertex of cube；Mode two, with the Partial Feature of color measuring apparatus measurement display, such as RGB
Color coordinates on coordinate system internal coordinate axis recycles the characteristic point measured to calculate the color coordinates on each vertex of cube.
6. a kind of calibration method of medical display colour curve according to claim 1, which is characterized in that the step
SS5 is specifically included: target point include with cube intracorporal judgment mode it is as follows: assuming that the color coordinates of target point be (Xg, Yg,
Zg)；X, Y and Z of each vertex color coordinate of cube take its maximum value Xmax, Ymax, Zmax, minimum value Xmin, Ymin,
Zmin；
Simultaneously meet following relationship then assertive goal point in cube:
Xmin<Xg<Xmax；
Ymin<Yg<Ymax；
Zmin<Zg<Zmax。
7. a kind of calibration method of medical display colour curve according to claim 1, which is characterized in that the step
The interpolation method in SS6 includes but is not limited to any one of following: linear interpolation；Spline interpolation；Polynomial interopolation.
8. a kind of calibration method of medical display colour curve according to claim 6, which is characterized in that the step
The immediate point of the color in SS7 is judged as follows: setting target color coordinate (Xg, Yg, Zg) and any face
The distance of chromaticity coordinates (X, Y, Z) are as follows:
Wherein a, b, c are the weight coefficient of each color component, and the weight coefficient is adjusted according to the variation of application scenarios.
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