Patent ID: 9082160
Filing Date: 2015-07-14
Classification: G06T,H04N

Abstract:
1. An image compression method, comprising steps of: determining non-edge portions of an image to be compressed by performing an image edge detection on the image to be compressed; dividing each of the determined non-edge portions into a plurality of connected domains of pixels according to color similarity of the pixels in the non-edge portion, wherein each of the connected domains of pixels is composed of a pixel selected during the division into the connected domains of pixels and pixels similar in color to and continuously adjacent to the selected pixel; setting a color of each of the connected domains of pixels to a represented color, wherein the represented color is the color of the pixel selected during the division into the connected domains of pixels; building a first compression list including a plurality of entries, wherein each entry corresponds to the represented color of each of the connected domains of pixels; performing a color merging process on the entries in the first compression list to obtain a final image compression color list, wherein the represented colors of the connected domains of pixels which are not adjacent and having similar represented colors are modified to a same color; and compressing the image to be compressed by using colors in the final image compression color list.