PROBLEM TO BE SOLVED: To estimate a content rate of more biocomponents than the number of excitation light.SOLUTION: An electronic endoscope includes: an excitation light light source that generates an excitation light generating fluorescence from a subject when the subject is irradiated therewith an EMCCD 46 that images the subject by the fluorescence a ROM 67 that beforehand stores a conversion matrix data 154 by which pixel value of a fluorescent image captured by the EMCCD 64 is correlated with each content rate of a plurality of fluorescent components emitting the fluorescence a content rate calculation part 151 that acquires the fluorescent image and the conversion matrix data 154, makes the conversion matrix data 154 react with the pixel value of the fluorescent image, and calculates each estimation value of the content rate of the plurality of fluorescent components which have more types of the excitation lights for each pixel and an image formation part 152 that forms an image having a value corresponding to a content rate calculated by the content rate calculation part 151 as the pixel value.COPYRIGHT: (C)2013,JPO&INPIT【課題】励起光の種類よりも多数の生体成分の含有率を推定する。【解決手段】被検体に照射したときに被検体から蛍光を発光させる励起光を発生する励起光光源と、蛍光により被検体を撮像するEMCCD46と、EMCCD64で撮像した蛍光画像の画素値を、蛍光を発光する複数の蛍光成分の各々の含有率に対応付ける変換行列データ154を予め記憶するROM67と、蛍光画像と変換行列データ154を取得し、蛍光画像の画素値に変換行列データ154を作用させ、画素毎に励起光の種類よりも多い複数の蛍光成分の含有率の推定値をそれぞれ算出する含有率算出部151と、含有率算出部151が算出した含有率に対応する値を画素値とする画像を生成する画像生成部152と、を備える。【選択図】図6
