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1. (WO2018176958) ADAPTIVE MAPPING METHOD AND SYSTEM DEPENDING ON MOVEMENT OF KEY POINTS IN IMAGE

Pub. No.:    WO/2018/176958    International Application No.:    PCT/CN2017/120135
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Dec 30 00:59:59 CET 2017
IPC: G06K 9/32
Applicants: WUHAN DOUYU NETWORK TECHNOLOGY CO., LTD.
武汉斗鱼网络科技有限公司
Inventors: LI, Liang
李亮
CHEN, Shaojie
陈少杰
ZHANG, Wenming
张文明
Title: ADAPTIVE MAPPING METHOD AND SYSTEM DEPENDING ON MOVEMENT OF KEY POINTS IN IMAGE
Abstract:
The present invention provides an adaptive mapping method and system depending on movement of key points in an image. The method comprises: positioning the locations of key points on a key object in the image, and performing rotation matrix transformation on any one point on the image according to the location change of the moved key point to obtain the coordinates of the corresponding point after the rotation matrix transformation is performed; obtaining coordinates in a certain range in the vicinity of the location of the moved key point according to the coordinates of the moved key point and the scale coefficient of a map; and obtaining map sampling coordinates according to the coordinates in the certain range in the vicinity of the location of the moved key point, the coordinates of the key point and the scale coefficient of the map, and displaying the map on the map sampling coordinates. By means of the present invention, the map can adaptively rotate in the case that a human face is rotated, and an original display scale will not be changed, and the user experience can be improved.