Imaging system and processing device

An imaging system comprising:

• an imaging unit configured to continuously capture an image;
• a photometry unit configured to acquire a photometric value indicating the brightness of the image continuously captured by the imaging unit;
• a change rate setting unit configured to variably set a change rate of brightness of the image continuously captured by the imaging unit, the change rate being defined as a rate at which the photometric value acquired by the photometry unit reaches a predetermined target value of brightness;
• a parameter setting unit configured to a light adjustment parameter for altering the change rate of the brightness of the image in accordance with a change rate coefficient according to the change rate set by the change rate setting unit so as to include the predetermined target value of the brightness of the image continuously captured by the imaging unit;
• a light adjustment unit configured to multiply a value of the light adjustment control signal generated in line with a light adjustment profile for causing the photometric value input from the photometry unit to reach a predetermined target value of the brightness of the image captured by the imaging unit within a certain time period, by the change rate coefficient set by the parameter setting unit, to output based on the photometric value input from the photometry unit.

A processing device for processing an image continuously captured by an imaging unit, the processing device comprising:

• a photometry unit configured to acquire a photometric value indicating the brightness of the image continuously captured by the imaging unit;
• a change rate setting unit configured to variably set a change rate of brightness of the image continuously captured by the imaging unit the change rate being defined as a rate at which the photometric value acquired by the photometry unit reaches a predetermined target value of brightness;
• a parameter setting unit configured to be capable of variably setting a light adjustment parameter for altering the change rate of the brightness of the image in accordance with the change rate set by the change rate setting unit so as to include the predetermined target value of the brightness of the image continuously captured by the imaging unit;
• and
• a light adjustment unit configured to generate, based on the photometric value input from the photometry unit, a light adjustment control signal in line with a light adjustment profile for causing the photometric value input from the photometry unit to reach a predetermined target value of the brightness of the image captured by the imaging unit within a certain time period,
• wherein the parameter setting unit sets a deemed photometric value as the light adjustment parameter, and
• wherein the light adjustment unit is configured to select one of the photometric value and the deemed photometric value as an input value of the photometric value based on a comparison result between the deemed photometric value set by the parameter setting unit and the photometric value acquired by the photometry unit, and to output the light adjustment control signal based on the input value and the light adjustment profile.