Title:
TOPOGRAPHIC IMAGE RENDERING METHOD AND APPARATUS, DEVICE, COMPUTER READABLE STORAGE MEDIUM AND COMPUTER PROGRAM PRODUCT
Document Type and Number:
WIPO Patent Application WO/2023/231537
Kind Code:
A1
Abstract:
The present application provides a topographic image rendering method and apparatus, a device and a computer readable storage medium. The method comprises: in response to determining that the refreshing time of a topographic image is reached, determining target levels to be refreshed and surface range information needing to be refreshed; obtaining hierarchical region images corresponding to the target levels from a pre-generated image set, the image set comprising at least two map images, and each map image comprising a plurality of hierarchical region images which are generated by means of clipmapping and have different levels of detail; updating the hierarchical region images corresponding to the target levels on the basis of the surface range information to obtain updated hierarchical region images corresponding to the target levels, and updating the image set on the basis of the updated hierarchical region images corresponding to the target levels to obtain an updated image set; determining rendering information of each pixel point in a visual range on the basis of the updated image set; and rendering the topographic image in the visual range on the basis of the rendering information of each pixel point.
Inventors:
ZHU HONGCHUAN (CN)
Application Number:
PCT/CN2023/084552
Publication Date:
December 07, 2023
Filing Date:
March 29, 2023
Export Citation:
Assignee:
TENCENT TECH SHENZHEN CO LTD (CN)
International Classes:
G06T15/00
Foreign References:
| CN114677467A | 2022-06-28 | |||
| CN101261743A | 2008-09-10 | |||
| CN109949693A | 2019-06-28 | |||
| CN104484896A | 2015-04-01 |
Other References:
BAI HAO, GONG GUANGHONG, DING YING: "Large Scale Terrain Rendering based on Clipmap", ZHONGGUO TISHIXUE YU TUXIANG FENXI = CHINESE JOURNAL OF STEREOLOGY AND IMAGE ANALYSIS, ZHONGGUO TISHIXUE XUEHUI, CN, vol. 14, no. 2, 25 June 2009 (2009-06-25), CN , pages 202 - 208, XP009550991, ISSN: 1007-1482, DOI: 10.13505/j.1007-1482.2009.02.022
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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