Color correction method for multi-channel projection display system

The present invention is a method for correcting a multi-channel color projection display system, to solve the problem of color difference of each channel of the projected image. The system generates a graphics computer, image correction machines, projectors, debugging computer, the color measurement device and projection screens, graphics generation computer, image correction and projector composed of a projection channel, graphics generation computer generates the input image, the projector output projection the image projection screen, the projection system has at least two channels; color calibration method steps as follows: (1) to give red, green and blue color map data of the respective channels between the screen image and the test image, (2) to give the target system color map data, (3) to obtain color correction system, (4) using the color correction system, the input image is processed.