Endoscope system and analyzing apparatus

An endoscope system comprising:

• a light source apparatus configured to emit first special light that has a different wavelength region from white light and is absorbed by biological tissue differently according to a first feature amount of the biological tissue;
• an endoscope having an imaging unit that comprises an image sensor configured to generate color image data by imaging the biological tissue illuminated by light emitted by the light source apparatus;
• and
• a processor that has a first parameter generation unit and a first feature amount acquisition unit,
• the first parameter generation unit configured to generate, based on the color image data, a first parameter that is a ratio W/R of a first special observation image data W and a first normal observation image data R,
• the first special observation image data W being obtained by imaging the biological tissue illuminated by the first special light, and being color image data X of an image that has a component in a wavelength region that has sensitivity to the first feature amount of the biological tissue and has sensitivity to light scattering by the biological tissue;
• and
• the first normal observation image data R being an R component of normal observation image data in an RGB color space obtained by imaging the biological tissue illuminated by the white light, and being color image data Y of an image that has a component in a wavelength region that does not have sensitivity to the first feature amount of the biological tissue but has sensitivity to light scattering by the biological tissue,
• the first feature amount acquisition unit configured to acquire the first feature amount based on the first parameter.

An endoscope system comprising:

• a light source apparatus configured to emit first special light that has a different wavelength region from white light and is absorbed by biological tissue differently according to a first feature amount of the biological tissue;
• an endoscope having an imaging unit that comprises an image sensor configured to generate color image data by imaging the biological tissue illuminated by light emitted by the light source apparatus;
• and
• a processor that has a first parameter generation unit and a first feature amount acquisition unit,
• the first parameter generation unit configured to generate, based on the color image data, a first parameter that is a ratio W/(αR) of a first special observation image data W and a data αR,
• the first special observation image data W being obtained by imaging the biological tissue illuminated by the first special light, and being color image data X of an image that has a component in a wavelength region that has sensitivity to the first feature amount of the biological tissue and has sensitivity to light scattering by the biological tissue;
• and
• the data αR being obtained by multiplying a first normal observation image data R by a coefficient set in advance, the first normal observation image data R being an R component of normal observation image data in an RGB color space obtained by imaging the biological tissue illuminated by the white light, and being color image data Y of an image that has a component in a wavelength region that does not have sensitivity to the first feature amount of the biological tissue but has sensitivity to light scattering by the biological tissue,
• the first feature amount acquisition unit configured to acquire the first feature amount based on the first parameter.

An endoscope system comprising:

• a light source apparatus configured to emit first special light that has a different wavelength region from white light and is absorbed by biological tissue differently according to a first feature amount of the biological tissue;
• an endoscope having an imaging unit that comprises an image sensor configured to generate color image data by imaging the biological tissue illuminated by light emitted by the light source apparatus;
• and
• a processor that has a first parameter generation unit and a first feature amount acquisition unit,
• the first parameter generation unit configured to generate, based on the color image data, a first parameter that is a ratio W/(R+G) of a first special observation image data W and a sum R+G,
• the first special observation image data W being obtained by imaging the biological tissue illuminated by the first special light, and being color image data X of an image that has a component in a wavelength region that has sensitivity to the first feature amount of the biological tissue and has sensitivity to light scattering by the biological tissue;
• and
• the sum R+G being a sum of first normal observation image data R and second normal observation image data G that are respectively an R component and a G component of normal observation image data in an RGB color space obtained by imaging the biological tissue illuminated by the white light, and being color image data Y of an image that has a component in a wavelength region that does not have sensitivity to the first feature amount of the biological tissue but has sensitivity to light scattering by the biological tissue,
• the first feature amount acquisition unit configured to acquire the first feature amount based on the first parameter.

An endoscope system comprising:

• a light source apparatus configured to emit first special light that has a different wavelength region from white light and is absorbed by biological tissue differently according to a first feature amount of the biological tissue;
• an endoscope having an imaging unit that comprises an image sensor configured to generate color image data by imaging the biological tissue illuminated by light emitted by the light source apparatus;
• and
• a processor that has a first parameter generation unit and a first feature amount acquisition unit,
• the first parameter generation unit configured to generate, based on the color image data, a first parameter that is a ratio W/(βR+γG) of a first special observation image data W and a sum βR+γG,
• the first special observation image data W being obtained by imaging the biological tissue illuminated by the first special light, and being color image data X of an image that has a component in a wavelength region that has sensitivity to the first feature amount of the biological tissue and has sensitivity to light scattering by the biological tissue;
• and
• the sum βR+γG being a sum of obtained by using a coefficient β and a coefficient γ that are set in advance to perform weighted addition on first normal observation image data R and second normal observation image data G that are respectively an R component and a G component of normal observation image data in an RGB color space obtained by imaging the biological tissue illuminated by the white light, and being color image data Y of an image that has a component in a wavelength region that does not have sensitivity to the first feature amount of the biological tissue but has sensitivity to light scattering by the biological tissue,
• the first feature amount acquisition unit configured to acquire the first feature amount based on the first parameter.