IMAGE PICKUP APPARATUS AND METHOD FOR EXTENDING DYNAMIC RANGE THEREOF

摘要

An image pickup apparatus and a method for extending a dynamic range thereof are provided. The image pickup apparatus includes a luminance and chrominance signal generator which generates a luminance signal and a chrominance signal; and a dynamic range extender which extends and outputs dynamic ranges for both the luminance signal and the chrominance signal, which are generated by the luminance and chrominance signal generator, based on current frame data and previous frame data. Therefore, a dynamic range for an image signal having a low gray level can be extended while an increase in noise can be prevented, by increasing the power of an output signal using current frame data and previous frame data.