US 12,089,802 B2
Medical image processing apparatus and medical observation system
Taihei Michihata, Tokyo (JP)
Assigned to SONY OLYMPUS MEDICAL SOLUTIONS INC., Tokyo (JP)
Filed by Sony Olympus Medical Solutions Inc., Tokyo (JP)
Filed on Feb. 23, 2021, as Appl. No. 17/182,268.
Claims priority of application No. 2020-047012 (JP), filed on Mar. 17, 2020; and application No. 2020-216975 (JP), filed on Dec. 25, 2020.
Prior Publication US 2021/0290037 A1, Sep. 23, 2021
Int. Cl. A61B 1/00 (2006.01); A61B 1/04 (2006.01); A61B 1/06 (2006.01)
CPC A61B 1/00009 (2013.01) [A61B 1/00188 (2013.01); A61B 1/043 (2013.01); A61B 1/0638 (2013.01); A61B 1/0655 (2022.02); A61B 1/0661 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A medical image processing apparatus comprising:
a captured image acquisition circuit configured to acquire a first captured image obtained by capturing light from an observation target to which light of a first wavelength band is emitted and a second captured image obtained by capturing fluorescence from the observation target excited by excitation light of a second wavelength band different from the first wavelength band;
an evaluation value calculation circuit configured to calculate
a focus evaluation value, based only on the first captured image, to be used for controlling a focus position of an image sensor configured to generate each of the first captured image and the second captured image, and
a brightness evaluation value relating to at least one of an exposure time, a gain for image generation, a gain for image processing and an amount of a light by a light source, based on the first captured image, to be used for controlling a brightness of the first captured image and a brightness of the second captured image; and
an operation control circuit configured to:
control the focus position of the image sensor based on the focus evaluation value to generate both the first captured image and the second captured image; and
adjust the brightness of the first captured image based on the brightness evaluation value, and adjust the brightness of the second captured image based on a correlation between the first captured image and the second captured image, and the brightness evaluation value.