发明名称 |
Correction of defective pixels in a detector using temporal gradients |
摘要 |
A detector imaging system having an apparatus and method for correcting defective pixels in a current acquired image is disclosed herein. The system performs the correction of defective pixels using image feature information and temporal information. The system includes a correction scheme which includes determining a temporal matrix based on the current acquired image, at least one prior acquired image, and a filter weight; determining a local gradient based in part on the temporal matrix and a gradient kernel; and providing a correction value based on the local gradient to correct the defective pixel. The correction scheme is repeated a plurality of times as desired to correct all the defective pixels in the current acquired image.
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申请公布号 |
US6792159(B1) |
申请公布日期 |
2004.09.14 |
申请号 |
US19990474498 |
申请日期 |
1999.12.29 |
申请人 |
GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC |
发明人 |
AUFRICHTIG RICHARD;KUMP KENNETH SCOTT;XUE PING |
分类号 |
G01T1/20;G01T1/24;G06K9/40;H04N5/217;H04N5/367;(IPC1-7):G06K9/40 |
主分类号 |
G01T1/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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