Image processing apparatus and image processing method
View Patent ↗An image processing apparatus includes a first spectrum estimating unit for reading the image information from a storage unit and estimating a spectrum of an object based on the read image information; a dye amount estimating unit for estimating dye amounts included in the object using the estimated spectrum; a second spectrum estimating unit for synthesizing a first spectrum using the estimated dye amounts; a spectrum subtractor for calculating a difference spectrum by subtracting the first spectrum from the spectrum; a dye amount correcting unit for correcting at least a part of the estimated dye amounts; a third spectrum estimating unit for synthesizing a second spectrum using the corrected dye amount; a spectrum adder for synthesizing a third spectrum by adding the second spectrum and the difference spectrum; and an image synthesizer for synthesizing a display image from the third spectrum.
1. An image processing apparatus for performing an image processing on an image, comprising;
a storage unit for storing image information regarding the image;
a first spectrum estimating unit for reading the image information from the storage unit and estimating a spectrum of an object based on the read image information;
a dye amount estimating unit for estimating a plurality of dye amounts included in the object using the spectrum of the object estimated by the first spectrum estimating unit;
a second spectrum estimating unit for synthesizing a first spectrum using the plurality of dye amounts estimated by the dye amount estimating unit;
a spectrum subtractor for calculating a difference spectrum by subtracting the first spectrum synthesized by the second spectrum estimating unit from the spectrum of the object;
a dye amount correcting unit for correcting at least a part of the plurality of dye amounts estimated by the dye amount estimating unit;
a third spectrum estimating unit for synthesizing a second spectrum using the dye amount corrected by the dye amount correcting unit;
a spectrum adder for synthesizing a third spectrum by adding the second spectrum synthesized by the third spectrum estimating unit and the difference spectrum; and
an image synthesizer for synthesizing a display image from the third spectrum synthesized by the spectrum adder.
2. The image processing apparatus according to claim 1 , wherein the display image is an RGB image.
3. The image processing apparatus according to claim 1 , wherein the number of dye amounts estimated from the spectrum of the object is larger than the number of dye amounts used for synthesizing the first spectrum.
4. The image processing apparatus according to claim 1 , wherein the number of dye amounts estimated from the spectrum of the object is equal to the number of dye amounts used for synthesizing the first spectrum.
5. The image processing apparatus according to claim 1 , wherein the number of dye amounts used for synthesizing the first spectrum and the number of dye amounts used for synthesizing the second spectrum are equal to each other.
6. The image processing apparatus according to claim 1 , further comprising a display unit for displaying the display image.
7. The image processing apparatus according to claim 1 , further comprising an operating unit to which a correction instruction signal for instructing correction of the dye amount is input.
8. The image processing apparatus according to claim 7 , wherein information regarding a coefficient used when correcting the dye amount is included in the correction instruction signal.
9. The image processing apparatus according to claim 7 , wherein the operating unit includes any one of a slider, a dial, and a push button.
10. The image processing apparatus according to claim 7 , wherein the operating unit includes a graphical user interface, which imitates any one of a slider, a dial, and a push button.
11. The image processing apparatus according to claim 10 , wherein the graphical user interface is displayed in a same screen as the display image.
12. The image processing apparatus according to claim 1 , wherein the dye amount correcting unit corrects the dye amount by multiplying a first coefficient by the dye amount.
13. The image processing apparatus according to claim 1 , wherein the dye amount correcting unit corrects the dye amount by adding a second coefficient to the dye amount.
14. The image processing apparatus according to claim 7 , wherein the dye amount correcting unit, the third spectrum estimating unit, the spectrum adder, and the image synthesizer perform a process based on contents of the correction instruction signal input by the operating unit, and
the display unit displays the display image to which the process based on the contents of the correction instruction signal is reflected.
15. The image processing apparatus according to claim 1 , wherein the object is a stained living specimen.
16. The image processing apparatus according to claim 15 , wherein the object is a pathological specimen.
17. The image processing apparatus according to claim 16 , wherein the dye amount estimated by the dye amount estimating unit includes hematoxylin and eosin.
18. The image processing apparatus according to claim 17 , wherein the dye amount estimated by the dye amount estimating unit further includes eosin which stains a red blood cell.
19. The image processing apparatus according to claim 1 , wherein the first spectrum estimating unit uses a Wiener estimation when estimating the spectrum of the object.
20. The image processing apparatus according to claim 1 , wherein the first spectrum estimating unit uses a Lambert-Beer law when estimating a plurality of dye amounts included in the object.
21. An image processing method for performing an image processing on an image, the image processing method comprising:
reading the image information from a storage unit;
estimating a spectrum of an object based on the read image information;
estimating a plurality of dye amounts included in the object using the estimated spectrum of the object;
synthesizing a first spectrum using the estimated dye amounts;
calculating a difference spectrum by subtracting the first spectrum from the spectrum of the object;
correcting at least a part of the estimated dye amounts;
synthesizing a second spectrum using the corrected dye amount;
synthesizing a third spectrum by adding the second spectrum; and
synthesizing a display image from the third spectrum.
22. A computer program product having a computer readable medium including programmed instructions performing an image processing on an image, wherein the instructions, when executed by a computer, cause the computer to perform:
reading the image information from a storage unit;
estimating a spectrum of an object based on the read image information;
estimating a plurality of dye amounts included in the object using the estimated spectrum of the object;
synthesizing a first spectrum using the estimated dye amounts;
calculating a difference spectrum by subtracting the first spectrum from the spectrum of the object;
correcting at least a part of the estimated dye amounts;
synthesizing a second spectrum using the corrected dye amount;
synthesizing a third spectrum by adding the second spectrum; and
synthesizing a display image from the third spectrum.