A projection image blur removal method

The present invention discloses a projection image based on the multi-scale convolution blur removal method of the first to use a discrete set of correcting geometric mapping method, and an improved Sobel-Tenengrad focus evaluation images calculated by the sharpness of projected luminance equalization captured image, and then use the Wiener filter having a multi-scale image recombinant methods blur convolution kernel projected template image blur elimination calculation to finalize the projection image of the projector and the projection itself defocus blur removal of environmental impact. The present invention is a projection image using the multi-scale convolution based method disclosed in the blur removal, the projection device can effectively eliminate the manual focusing is insufficient and the complex environment of the projection focusing on the interference projection image, and ultimately the observer visually on the image resolution and detail to enhance the degree of recognition.