SSE2-based image mixing processing method

Abstract

Disclosed in the invention is a streaming SIMD extensions 2 (SSE2)-based image mixing processing method, comprising: reading source and target graphic image data; selecting pixel points in the source and target graphic images and carrying out parallel processing on the pixel points; determining whether there is a special pixel point in the parallel pixel points and carrying out flag bit recording on the special pixel point; changing an Alpha value of the special pixel point whose flag bit has been recorded in parallel data so as to enable the special pixel point to take part in parallel computation and obtain a result; and according to the recorded flag bit, correcting a calculation result of the special pixel point whose Alpha value has been changed by parallel computation and storing the result. According to the image mixing processing method provided by the invention, the data volume for parallel computation is increased, thereby improving efficiency; a special pixel point flag bit determination recovery mechanism is introduced, thereby ensuring parallel computation can be carried out correctly; the CPU performance is utilized efficiently, thereby improving the calculation speed and shortening calculation time; and a complex mixing rule enables verisimilitude and truthfulness of a graphic image mixing result to be enhanced to a greater extent.

Description

technical field [0001] The invention relates to the field of broadcasting and television, in particular to an image mixing processing method based on SSE2. Background technique [0002] The central processing unit CPU relies on instructions to calculate and control the system, and each CPU specifies a series of instruction systems that match its hardware circuits when it is designed. The strength of the instruction is also an important indicator of the CPU, and the instruction set is one of the most effective tools to improve the efficiency of the microprocessor. SSE2 (Streaming SIMD Extensions 2) is a SIMD stream technology extension 2 or data stream single instruction multiple data extension instruction set 2 developed by Intel on the basis of the SSE instruction set, which enhances the processing of multimedia, graphics and Internet of the CPU ability. [0003] If the graphics card has a 32-bit bus, the additional 8-bit signal is used to save the invisible transparency ...

AI Technical Summary

Problems solved by technology

[0006] In the existing technology, the number of pixels processed by each blending operation is 1-2, and the function call overhead is large and the processing efficiency is low; most of the participating data in the middle of the blending operation is given in the form of a lookup table, which greatly increases the cache miss occurs, which reduces the processing speed and efficiency; most existing methods simplify the mixing rules in order to improve efficiency, and do not allow the Alpha part of the source pixel and the target pixel to participate in the operation, thereby reducing the authenticity of the mixing

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