Low-delay encoding/decoding method based on H264 standard and image data transmission method

Abstract

The invention discloses a low-delay encoding / decoding method based on H264 standard and an image data transmission method. The low-delay encoding / decoding method comprises the following steps: performing conversion and quantization processing on an image domain of an input image to obtain a first image; performing prediction encoding on space domain and time domain of the first image so as to obtain the second image, wherein the prediction coding specifically comprises intra-frame prediction and inter-frame prediction; performing optimization memory mapping on the second image to obtain imagedata, wherein the optimization memory mapping specifically comprises the steps of distributing memory space at first, and then cyclically reading the second image and performing data processing on thesecond image; breaking the circulation and releasing the memory; performing entropy encoding on the image data, and outputting H264 encoded stream. After the memory optimization, the execution efficiency is improved, the image encoding / decoding delay is reduced, the encoding / decoding can be performed under low frequency, and the system power consumption and radiated heat can be reduced

Description

technical field [0001] The invention belongs to the technical field of image transmission; in particular, it relates to a low-delay encoding and decoding method based on the H264 standard, and also relates to an image data transmission method based on the above method. Background technique [0002] Due to the rapid development of communication electronic information systems, there is an increasing demand for "indirect control" through data communication. For example, in the military field, it is necessary to remotely control bombs and drones to complete command guidance and battlefield reconnaissance; in the civilian field, it is necessary to remotely control the machine for dangerous operations or dangerous rescue. [0003] The functions to be achieved by these requirements can be divided into the following aspects: 1. It is necessary to collect images of the surrounding environment of the front-end control objects; 2. Compress and encode the images; 3. Transmit the encoded...

AI Technical Summary

Problems solved by technology

[0004] The encoding result of the current TMS320DM6467T platform consumes a lot of power, so how to achieve low power consumption without affecting the image encoding and decoding quality and transmission bandwidth has become a very meaningful topic

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