Patent ID: 8223198
Filing Date: 2012-07-17
Classification: A61B,H04N

Abstract:
1. An endoscope processor, comprising: a receiver that receives an image signal, the image signal corresponding to a captured subject, the image signal being generated by an imaging device, the image signal comprising a plurality of pixel signals corresponding to a plurality of pixels, the plurality of pixels forming an optical image of the subject; and a correction circuit block that carries out first signal processing on the plurality of pixel signals so that a representative value matches a standard value when the image signal received by the receiver is a fluorescence image signal comprising the plurality of pixel signals, the representative value being calculated on the basis of a plurality of chrominance difference values corresponding to the plurality of pixel signals, the fluorescence image signal being generated when the subject is illuminated with excitation light, the excitation light making an organ fluoresce, wherein the correction circuit block comprises a first generation circuit block, a first calculation circuit block, and a main correction circuit block, the first generation circuit block generates chrominance difference signal components corresponding to the chrominance difference values on the basis of the pixel signal, the first calculation circuit block calculates the representative value on the basis of the chrominance difference signal components corresponding to a plurality of the pixels of a single image signal, and the main correction circuit block corrects the chrominance difference signal components of all the pixels so that the representative value matches the standard value.