| 摘要 |
An endoscope apparatus includes: a light source unit that emits white illumination light or narrow band illumination light; an image sensor having pixels; a filter unit arranged corresponding to the pixels and including filters having a filter for passing blue light, and a filter for passing the blue light and one of green light and red light, the number of the filters for passing the green light being not less than half of the number of all the filters of the filter unit, and the number of the filters for passing the blue light being not less than the number of the filters for passing the green light; a selecting unit that selects, from the pixels, a luminance component pixel depending on types of illumination light; and a demosaicing processing unit that generates a color image signal having color components based on the luminance component pixel. |
| 主权项 |
1. An endoscope apparatus comprising:
a light source unit configured to emit one of white illumination light and narrow band illumination light, the white illumination light including red wavelength band light, green wavelength band light, and blue wavelength band light, and the narrow band illumination light having a narrow wavelength band included in each of the blue wavelength band light and the green wavelength band light; an image sensor having a plurality of pixels arranged in a lattice pattern, each of which is configured to receive light, the image sensor being configured to perform photoelectric conversion on the light received by each of the plurality of pixels to generate an electric signal; a color filter comprising a filter unit arranged corresponding to the plurality of pixels, the filter unit including a plurality of filters having at least a filter for passing the blue wavelength band light, and a filter for passing the blue wavelength band light and at least one of the green wavelength band light and the red wavelength band light, the number of the filters for passing the green wavelength band light being equal to or greater than half of the number of all the filters of the filter unit, and the number of the filters for passing the blue wavelength band light being equal to or greater than the number of the filters for passing the green wavelength band light; a luminance component pixel selecting unit configured to select, from the plurality of pixels, a luminance component pixel for receiving light of a luminance component depending on types of illumination light the light source unit emits; and a demosaicing processing unit configured to generate a color image signal having a plurality of color components based on the luminance component pixel selected by the luminance component pixel selecting unit. |
