Compression encoding method and device for map and mobile terminal equipment

Abstract

The invention provides a map compression coding method and device and mobile terminal equipment, relates to the technical field of map processing, is applied to a game client, and comprises the following steps: dividing a first pixel block in a plurality of pixel blocks in a map into a plurality of sub-blocks, and determining a basic pixel value of each sub-block; calculating a residual value of the pixel corresponding to the sub-block according to the original pixel value of the pixel and the basic pixel value of the sub-block, and selecting a first absolute value and a second absolute valueof the pixel corresponding to the sub-block from a first absolute value set and a second absolute value set according to the residual value; selecting the correction table of the sub-block according to the mean value of the table numbers of the correction tables to be selected corresponding to the plurality of first absolute values corresponding to the sub-block and the table numbers of the correction tables to be selected corresponding to the plurality of second absolute values; and performing compressed encoding on the plurality of pixel blocks based on the correction table of each sub-blockof the first pixel block. The problem that map compression processing has too high requirements for processing capacity and is not suitable for a mobile terminal can be solved.

Description

technical field [0001] The present application relates to the technical field of texture processing, in particular to a compression encoding method, device and mobile terminal equipment for textures. Background technique [0002] With the continuous development of technology and the continuous improvement of user needs, the textures generated during the running of the game client are developing in the direction of high precision and high pixels, which also causes a very large storage burden. [0003] Compressing textures can greatly reduce the memory usage of textures, but the current method of compressing textures generally requires very complex calculations, such as ETC1, ETC2 compression technology, etc., which require processing power for mobile terminals running game clients. Very high, or, there are some texture compression methods, although the amount of calculation is small, the accuracy is very poor, and the user experience is not friendly. Contents of the inventi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a method and device for compressing and encoding textures, as well as mobile terminal equipment, so as to solve the problem that the compression processing of textures requires too much processing power and is not suitable for mobile terminals.

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