CT (Computed Tomography) data compression method

A data compression and data technology, applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve the problems of high compression speed, inability to take into account the compression ratio, low compression ratio, etc., to achieve the effect of improving the compression ratio
CN104244012AActive Publication Date: 2014-12-24重庆真测科技股份有限公司
3 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
重庆真测科技股份有限公司
Publication Date
2014-12-24

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to a CT (Computed Tomography) data compression mechanism. The data compression method comprises the following steps: acquiring original image data; caching the data acquired by a detector; differential encoding, namely, performing differential encoding for the cached data; area dividing, namely, dividing a data array into N small arrays with the same size; comparing and selecting, namely, comparing and screening separated data blocks with previous data blocks; data compression, namely, performing secondary compression for the part with large data difference. According to the CT data compression method, a nondestructive compression method for original industrial CT projection data is provided for mass industrial CT data acquiring and transmission; the data can be compressed in a CT device employing a high-resolution and large-area flat panel detector; therefore, the transmission efficiency and data compression ratio can be effectively raised.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a CT data compression method, in particular to a lossless compression method for industrial CT projection original data. Background technique

[0002] Nowadays, with the rapid development of area array CCD detectors, CCDs with higher and higher resolutions and larger sizes have been applied to industrial CT products, and the resulting CT projection data has doubled, which gives Data storage and real-time transmission pose great difficulties. It limits or cannot meet the high precision and high resolution requirements of CT.

[0003] Since industrial CT is used for inspection and flaw detection of industrial workpieces, it has special requirements for it, that is, the original data collected must have high fidelity requirements, and any degree of loss of image information is possible Will bring wrong inspection and flaw detection results. Based on the above considerations, the original data of CT projection adopts lossless en...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More