Compressing method for original CT image data

A technology of CT image and compression method, which is applied in the direction of image data processing, image data processing, instruments, etc., can solve the problem of low compression ratio, and achieve the effect of increasing the compression ratio and improving the compression ratio

Inactive Publication Date: 2004-03-24
PHILIPS & NEUSOFT MEDICAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Aiming at the problem of low compression ratio of existing medical image da

Method used

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  • Compressing method for original CT image data
  • Compressing method for original CT image data
  • Compressing method for original CT image data

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Now give an example of the compression and compression method proposed above as follows:

[0049] The following is the original CT image data stream:

[0050] 1106 1106 1000 1000 1000 1000 893 893 955 955 955 955

[0051] 955 955 1000 1000 0 0 0 0... 0

[0052] 132 132 132 132 231 231 231.... 231

[0053] 231 198 198 198...... 198

[0054] (I raw CT image data stream)

[0055] For the original CT image data stream shown above, split the high 8-bit data as high-bit data and the low 8-bit data as low-bit data. After splitting, the rearranged and preprocessed data shown below can be obtained. flow:

[0056] 4 4 3 3...... 3

[0057] 3.. 3 0 0 0... 0

[0058] 0 0........ 0

[0059] 0 0........ 0

[0060] 82 82 232 232 232 232 125 125 187 187 187 187

[0061] 187 187 232 232 0 0 0... 0

[0062] 132 132 132 132 231 231 231.... 231

[0063] 231 198 198 198...... 198

[0064] (II data stream after preprocessing)

[0065] N...

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Abstract

The method for compressing original CT image data includes the following steps: inputting data flow; rearraging data, separating the inputted data into high-order portion and low-order portion; separately run length coding high-order portion data flow and low-order portion data flow; combining run length coded high-order data flow and low-order data flow; and outputting coded data, said invention can raise compression ratio by 50%-150%.

Description

technical field [0001] The invention belongs to a medical image lossless compression method, in particular to a compression method for original CT image data. Background technique [0002] With the popularization and development of digital technology and the continuous enrichment of digital medical imaging systems for radiological diagnosis, a large amount of medical image data is generated in hospitals every day. Therefore, how to effectively, economically and quickly store, transmit and display these data has become a hot topic for researchers. The most important thing here is that we need to solve the compression problem of medical image data in order to reduce the burden of storage and communication. [0003] Because medical images are used for disease inspection and diagnosis, there are special requirements for them, that is, the medical images should have very high fidelity, and any degree of image information loss may cause misdiagnosis. Based on the above considera...

Claims

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Application Information

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IPC IPC(8): A61B6/03G06T1/00
Inventor 韩轶男
Owner PHILIPS & NEUSOFT MEDICAL SYST
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