An endoscope apparatus of the present invention comprises: a light source unit that emits a white color illumination light or a narrow-band illumination light an image capture device that performs a photoelectric conversion of a received light, thereby generating an electric signal a color filter configured by use of a first filter for passing therethrough lights of the brightness components of a white color illumination light observation and of a narrow-band illumination light observation, a second filter for passing therethrough lights of the brightness components of the white color illumination light observation and a third filter for passing therethrough lights of the brightness components of the narrow-band illumination light observation and a demosaicing unit that generates, in a case of the white color illumination light, a color image signal on the basis of the brightness components of the white color illumination light observation and that uses, in a case of the narrow-band illumination light, the pixel values of the pixels corresponding to the second filter to interpolate the pixel values of the brightness components of the white color illumination light observation at the pixel positions corresponding to the first filter, and thereafter interpolates, on the basis of the pixel values of the pixels corresponding to the first filter and the pixel values of the brightness components of the white color illumination light observation, the pixel values of the brightness components of the narrow-band illumination light observation at the pixel positions corresponding to the first filter, thereby generating a color image signal.Un appareil dendoscopie de la présente invention comprend : une unité à source de lumière qui émet une lumière déclairage de couleur blanche ou une lumière déclairage à bande étroite un dispositif de capture dimage qui effectue une conversion photoélectrique dune lumière reçue, cela permettant de générer un signal électrique un filtre col
