1. A method for flicker detection based on a plurality of images, comprising: providing an integrated flicker signal for each image, including: accumulating pixel data of a number of pixels of each image along a direction of each image; performing a motion compensation, including: comparing two integrated flicker signals of two images, and accordingly providing a flicker signal difference; performing a flicker feature extraction, including: applying a frequency analysis based on the flicker signal difference, and accordingly providing a normalized flicker feature value; and performing a flicker determination, including: according to the normalized flicker feature value, determining whether a flicker-free hypothesis should be rejected.