A method to accelerate film playing

Abstract

The invention relates to a method for playing movie, which comprises that (1), decoding the serial flow of image via variable length; (2), reversely quantizing the digit data; (3), processing simplified disperse cosine conversation; (3.1), setting the high-frequency part of image as zero, only keeping the low-frequency part; (3.2), processing reversely disperse cosine conversation on low-frequency part; (3.3), only extracting the odd rows of result to form new image; (4), playing said image. The invention can accelerate the movie play, and reduce the calculation of decompression.

Description

technical field [0001] The invention relates to a method for playing a film, in particular to a method for reducing the resolution of the film to improve the fluency of playing the film. Background technique [0002] With the advent of the digital age, digitizing the analog image can make it easier to save and manage the image. However, the original format of the digital image will take up a huge amount of storage space. Therefore, when the analog image is sampled, it must be compressed with video compression technology. Reduce the data volume of digital images. [0003] The principle of video compression is to use the similarity of images in time and space. After these similar data are processed by a compression algorithm, the parts that cannot be perceived by the human eye can be extracted. These are called visual redundancy. After part is removed, the purpose of video compression can be achieved. [0004] Generally, image compression or decompression is based on a block...

AI Technical Summary

Problems solved by technology

[0010] However, in many portable multimedia players (portable multimedia player, PMP), the resolution that its LCD screen can present is only 640×480, and more can only reach the resolution of 320×240 or even lower, when the resolution of the movie When the rate is high, the amount of calculation required for decompression is also large, requiring higher processing power of the microprocessor. When the processing power of the microprocessor is insufficient, some movies cannot be played smoothly, resulting in intermittent problems. Therefore, there is a need for a solution that reduces the amount of computation

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