An optical pseudocolor specifications of a radiographic image utilizing phase modulation method is suggested for medical diagnosis. With this suggestion the illness can be diagnosed not only referred to the color but also to the chromaticity coordinates of the affected part of the color image taking from a patient. This paper offered a theoretical method to calculate the chromaticity coordinates based on the effective relief thickness corresponding to the affected part of the patient, the result of calculation is in agreement with the gamut observation.
Dingyu Liu, Dingyu Liu,
"Optical specifications for pseudocolor diagnosis", Proc. SPIE 1896, Medical Imaging 1993: Physics of Medical Imaging, (14 September 1993); doi: 10.1117/12.154612; https://doi.org/10.1117/12.154612