The invention discloses a wide dynamic
processing method for a single-frame double-
exposure image. The single-frame double-
exposure image is a 12-bit original image comprising long
exposure pixel blocks and
short exposure pixel blocks simultaneously, and the method comprises the following steps of: (1) performing interpolation calculation, namely completing values of three channels of red, green and blue (RGB) for each pixel; (2) performing wide
dynamic mapping, namely mapping and compressing the interpolated image; (3) segmenting image subjected to wide
dynamic mapping to obtain two images only with the long exposure pixels and the
short exposure pixels respectively; and (4) combining the two images by using a brightness distribution
histogram interval segmenting method. Through the wide dynamic
processing method for the single-frame double-exposure image, the pixels in two exposure
modes in the single-frame image are combined, so that each part is subjected to proper exposure. Moreover, the single-frame image is only needed to be processed, the calculated quantity is reduced, and the wide dynamic
image quality is improved through detection and correction of dead pixels and correction of the image.