The embodiment of the invention provides an image processing method and system, wherein the method comprises the following steps of dividing an image to be processed into a foreground region, a background region and an uncertain region according to green component difference values of various pixel points in the image to be processed; determining a reconstruction background image according to the background region; re-calculating the foreground region and the uncertain region according to the reconstruction background image to obtain a reconstruction foreground image; obtaining a reconstruction alpha channel value according to a comparison result of the reconstruction foreground image and a set threshold value; and re-synthesizing the image according to the reconstruction foreground image, the reconstruction alpha channel value and a background image to be synthesized, such that a synthesized image is obtained. By means of the embodiment of the invention, the problem that colour overflows from the image due to existing ambient light interference can be solved.

Zhu Long

Papers

Image processing method and system