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Image processing method, image compression device and mobile terminal

  • US 9,082,160 B2
  • Filed: 12/04/2012
  • Issued: 07/14/2015
  • Est. Priority Date: 12/05/2011
  • Status: Active Grant
First Claim
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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.

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