A method and system for compressing cr images with equal resolution

A compression method and resolution technology, which is applied in the field of image processing, can solve the problem of low compression rate of CR images, and achieve the effect of reducing data redundancy, saving calculation amount, and reducing total amount

Active Publication Date: 2022-01-11
WUHAN ZHONGYUAN HUADIAN SCI & TECH
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Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a method and system for compressing CR images with equal resolution, and to solve the problem of low compression rate of CR images using traditional compression methods

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  • A method and system for compressing cr images with equal resolution
  • A method and system for compressing cr images with equal resolution
  • A method and system for compressing cr images with equal resolution

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with accompanying drawing:

[0045] The present invention first calculates the probability that the binary data of the pixel points at the same position in adjacent CR images are the same from the high bit to the low bit, and finds out the digits of the suspected high bit data and the suspected median data by setting the first threshold and the second threshold respectively ; Then, based on these two digits, calculate the same probability of the first few consecutive data in turn, and confirm the digits of the high and middle data, which can save the amount of calculation; then the high, middle and low data respectively Put them together to form a new data block, and then compare and analyze two adjacent data blocks, use a large comparison unit for the same high-level data with a high probability, and use a small comparison unit for the same high-level data with a high probability , replacing the origi...

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Abstract

The present invention provides a method and system for compressing CR images with equal resolution. The method includes receiving multiple CR images; randomly selecting two consecutive images from them, and calculating the binary data of all corresponding pixel points in the two consecutive images Middle D i The total number of the same pixels, and then calculate the first probability that the total number accounts for the number of pixels in the image, and compare it with the two preset thresholds to find out the number of suspected high and median data ; According to the sum of the two digits, calculate the second probability that the first j digits are the same, and find out the high and median data; put the high and median data in each image together to form a new data block, and the previous one The data block is the reference data block, compare all subsequent data blocks with the previous reference data block, give 1 if the data is the same, and give 0 if the data is different, and use different comparison units for high-order data and median data to form a mark data block; for mark data The flag bit data in the block is run-length coded and arithmetic coded.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and system for compressing CR images with equal resolution. Background technique [0002] In medical information communication, the compression algorithm of CR images generally takes a single image as a unit, and uses the general JPG2000 compression method for image compression. JPG2000 compression methods are divided into two types: lossy compression and lossless compression. For lossy compression, the compression rate is high but some data will be damaged, which is not acceptable for the medical field; and for lossless compression, due to the complexity of wavelet changes, software is often used. method implementation, the speed of compression and decompression and the compression rate are low. Contents of the invention [0003] The technical problem solved by the present invention is to provide a method and system for compressing CR images with equal resol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/176H04N19/13H04N19/42
CPCH04N19/176H04N19/13H04N19/42
Inventor 邓政危必波郑容詹万鹏陈伯芳刘望尹健陈默曾凡丽熊汉吴海林
Owner WUHAN ZHONGYUAN HUADIAN SCI & TECH
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