An image compression bit rate control method and device
A bit rate control and image compression technology, applied in the field of image processing, can solve problems such as overflow and image quality degradation, and achieve the effect of improving quality, good image quality, and avoiding overflow
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[0054]Since most of the compressed image bit rate control methods in the prior art adopt a fixed target compression rate, it is not conducive to achieving a good balance between avoiding overflow and ensuring image quality, so the embodiment of the present invention provides a dynamic compressed image The bit rate control method will add the dynamic change of TCR on the basis of the existing technology, and at the same time combine the adjustment of the number of AC coefficients, and finally achieve the maximum avoidance of overflow while ensuring the image quality.
[0055] In the embodiment of the present invention, the image compression technology in JPEG format is taken as an example. In practical applications, the method provided by the present invention can be applied to any image or video compression method that includes discrete cosine transform and quantization process, such as MPEG format, H .26x format, etc.
[0056] The data cache referred to in the embodiments of ...
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