Texture processing method and device, device and readable medium for 3D city model

Abstract

The invention provides a texture processing method and apparatus for a three-dimensional city model, equipment and a readable medium. The method comprises the steps of receiving a to-be-processed texture surface selected in the three-dimensional city model by a user; obtaining texture coordinates of each vertex of each triangular surface in the texture surface; according to the texture coordinates of each vertex of each triangular surface and the pixel size of a picture where the texture surface is located, obtaining pixel coordinates of each vertex of the corresponding triangular surface; and according to the pixel coordinates of each vertex of each triangular surface, adjusting pixel values of pixel points in the corresponding triangular surface to shield texts in the texture surface. By adopting the technical scheme, a texture can be processed according to each triangular surface, as a minimal processing unit, in the texture surface; the texture in the texture surface can be processed more accurately; peripheral textures are not affected; and the effect of shielding the texts in the to-be-processed texture surface in the three-dimensional city model is very good.

Description

【Technical field】 [0001] The invention relates to the field of computer application technology, in particular to a texture processing method, device, equipment and readable medium of a three-dimensional city model. 【Background technique】 [0002] 3D city model (3Dimensional City Model; 3D), also referred to as 3D model or 3D model for short, has been widely used in transportation, surveying, surveying and mapping, especially in urban planning and construction after years of research and application. had a certain effect. The 3D city model can show the buildings in the city from a three-dimensional perspective, and the form of expression is very intuitive and rich. [0003] The existing 3D city model is based on the real appearance of the city, and it is restored with high simulation. Every sign and every word engraved on every building in the city can be clearly seen in the three-dimensional city model. However, in the prior art, some buildings related to confidential aff...

AI Technical Summary

Problems solved by technology

[0004] However, most of the existing mosaicing methods are manually operated by the user. Specifically, the user manually selects the range to be mosaiced, and all the mosaics are placed in the range to block the text therein.

The existing mosaic method is difficult to cover the text neatly, and it will spread to the surrounding area, seriously affecting the texture around the text in the 3D city model. Therefore, the existing text occlusion scheme in the 3D city model has poor occlusion effect

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