US 11,030,715 B2
Image processing method and apparatus
Chenglin Zheng, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Aug. 19, 2019, as Appl. No. 16/544,066.
Application 16/544,066 is a continuation of application No. PCT/CN2018/076647, filed on Feb. 13, 2018.
Claims priority of application No. 201710291707.6 (CN), filed on Apr. 28, 2017.
Prior Publication US 2019/0370933 A1, Dec. 5, 2019
Int. Cl. G06T 3/40 (2006.01); G06T 7/13 (2017.01)
CPC G06T 3/403 (2013.01) [G06T 3/4007 (2013.01); G06T 7/13 (2017.01)] 20 Claims
OG exemplary drawing
 
1. An image processing method, comprising:
obtaining a plurality of first images each based on application of a different set of scaling operations to an original image;
obtaining a plurality of difference maps based on the first images and the original image;
obtaining an edge feature parameter of each first pixel in an intermediate image based on pixel values of pixels in the plurality of difference maps, wherein each edge feature parameter comprises an edge direction and an edge strength, wherein a resolution of the intermediate image is the same as a common resolution of the difference maps that is an integer multiple of resolution of the original image, and wherein the integer multiple is the same as a scaling multiple used when the plurality of difference maps are obtained;
obtaining, based on the edge feature parameter of each first pixel in the intermediate image, an edge feature parameter of each second pixel whose pixel value is unknown in a target image, wherein a resolution of the target image is any multiple of the resolution of the intermediate image; and
determining a pixel value of each second pixel based on the edge feature parameter of each second pixel to obtain the target image.