DEVICE AND METHOD OF DOWNSCALING AND BLENDING TWO HIGH RESOLUTION IMAGES

摘要

The present invention relates to the field of downscaling and blending of two high resolution images, and particularly to a device and a method allowing for downscaling and blending of a HD JPEG background image and a HD bitmap image, which is overlaid on the JPEG background image. The device comprises means for downscaling the background image by a predetermined factor n1, n2, ...nN; means for uncompressing the downscaled background image and the high-resolution bitmap image; means for dividing the uncompressed high-resolution bitmap image into blocks of n1xn2x.... xnN pixels, whereby the size of each block correspond to the size of each pixel of the downscaled background image; and, means (16) for blending each of the blocks of the uncompressed high-resolution bitmap image with each of the pixels of the downscaled background image and thus producing a blended image.