Image compression method and device for real-time code rate pre-distribution
An image compression and pre-allocation technology, applied in the field of image processing, can solve the problems of high difficulty in implementing complex algorithms, poor flexibility, etc., achieve broad market prospects and practical application value, simple implementation, and save storage space
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0022] See figure 1 Show that the compression method process of the present invention comprises:
[0023] Step S1: Preprocessing the input original image data to obtain the DC level shift of the original image data;
[0024] Step S2: Utilize the hardware description language (VHDL) to design the intelligent characteristic (IP) core of multi-level two-dimensional 5 / 3 wavelet transform in field programmable logic device, only need the intelligent characteristic of multi-level two-dimensional 5 / 3 wavelet transform ( IP) The core caches three lines of original image data to realize multi-level integer wavelet transform to remove the correlation redundancy between the original image pixels and obtain the sub-bands at all levels of the image; ...
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