Image data reading method for video coder, computer device and computer readable memory medium

Abstract

The invention discloses an image data reading method for a video coder, a computer device and a computer readable memory medium. The method comprises the steps that a cache receives an instruction forreading video data, reads compressed image data from an external memory and stores the compressed image data to a compressed image data storage area; the compressed image data is decompressed and then is stored to a decompressed image data storage area of the cache; coordinates of image data are determined according to the instruction for reading the video data, to-be-searched image data is searched from the decompressed image data storage area according to the coordinates of the image data, and after the to-be-searched image data is stored to the decompressed image data storage area, the searched image data is sent to a subordinate data utilization module. According to the method, the computer device and the computer readable memory medium, the bandwidth cost of the memory in an image coding process can be reduced.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a method for reading image data in a video coding process, a computer device for realizing the method, and a computer-readable storage medium. Background technique [0002] With the development of electronic technology and network technology, the transmission of video data through the network has been widely used in Internet TV, distance education, digital cinema, radio and television and other industries. Due to the large amount of video data, in order to efficiently transmit the video data, it is often necessary to encode the video data at the sending end of the video signal, and perform data decryption at the receiving end of the video data. Therefore, video codec technology, as a technology for processing image information data, has played an important role in the popularization of video data dissemination technology. [0003] The general trend of the development of v...

AI Technical Summary

Problems solved by technology

However, in the process of data encoding, since the data of the reference frame is likely to be read and used repeatedly, the reference frame that is first written to the cache is likely to be read after being pre-read. When fetching, the data of the reference frame that has been read before will be deleted, so that when the data of the reference frame that has been read before needs to be read again later, the data needs to be read from the external memory again, resulting in a certain reference frame The data is read repeatedly, resulting in low data reading efficiency

[0007] Moreover, since the data of the reference frame read from the external memory is often uncompressed image data, this will also cause a large amount of data to be read in the external memory in the cache, and when the encoder reads data, the external memory A lot of bandwidth is being used

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