METHOD FOR MAGNIFYING VIDEO IMAGE 4/3 TIMES

摘要

The present invention relates to a method for magnifying video image 4/3 times, which includes the following steps: firstly, determining whether the width and the height of the original image is the integral multiple of 3, if not, making up the width and/or the height of the original video image to the integral multiple of 3; then, extending every three old pixels to four new pixels in the horizontal and vertical direction of the image, respectively, the pixel value of the four new pixels is obtained by the weighted average of the pixel value of the one to three pixels of the three old pixels adjacent to the new pixel. With the method of magnifying a video image 4/3 times of the present invention, the computing complexity thereof is close to that of the video image magnifying method of zero order interpolation, while the image quality thereof is close to that of the video image magnifying method of bilinear first order interpolation. The method balances well the relation between the computing speed and the image quality, may result in relatively fast computing speed and relatively good image quality, and adapts to magnify the video image 4/3 times in the system with limited resource.