Image acquisition system and image acquisition method

An image acquisition system is provided with: a plurality of light sources that emit light to be irradiated to an object; a light source control unit that switches among the plurality of light sources that irradiate the object with light; and a line scan sensor that detects light from an object irradiated with the light, has a pixel unit in which a plurality of pixels are arranged in at least one dimension, and can switch a gain value for amplifying a signal from each pixel. The line scan sensor switches the gain value in synchronization with the switching of the light source. 一种图像获取系统，其中，具备：多个光源，其射出向对象物照射的光；光源控制部，其切换多个光源中向对象物照射光的光源；行扫描传感器，其检测来自照射光后的对象物的光，具有至少一维地排列有多个像素的像素部，能够切换将来自各像素的信号放大的增益值。行扫描传感器与光源的切换同步地切换增益值。