Patent ID: 11967170
Assignee: CHIPONE TECHNOLOGY (BEIJING) CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. The processing method according to claim 9, further comprising:
selecting an intermediate sub-interval within the grayscale value distribution range of valleys and ridges in the first image;
performing a second histogram stretching algorithm on grayscale values of a plurality of designated pixels in the first image, so as to process the first image into a second image, wherein the grayscale values of the plurality of designated pixels are distributed within the intermediate sub-interval, and a grayscale value distribution range of the plurality of designated pixels in the second image is greater than a grayscale value distribution range of the plurality of designated pixels in the first image; and
obtaining second texture information and/or pore information of the predetermined portion based on the second image.