Method for image sensor, image sensor and imaging device

The invention relates to a method for an image sensor, the image sensor and an imaging device. The invention discloses the method for realizing signal nonlinear conversion in the image sensor. The method comprises the steps of obtaining a pixel signal voltage of a pixel from the image sensor; and converting the obtained pixel signal voltage into a pixel digital signal based on a nonlinear responsecurve of a pixel signal voltage-digital signal, wherein the nonlinear response curve of the pixel signal voltage-digital signal comprises a plurality of sections, the slope of each section is definedas a ratio between the variation quantity corresponding to the digital signal of the section and the variation quantity of the pixel signal voltage corresponding to the section, and the slope of theat least one section in the plurality of sections is different from that of the at least one section in the other sections. 本发明涉及用于图像传感器的方法、图像传感器以及成像装置。本发明公开了种在图像传感器中实现信号非线性转换的方法。该方法包括：获取来自图像传感器中的像素的像素信号电压；以及基于像素信号电压－数字信号的非线性响应