Invention Grant
- Patent Title: Determining outlier pixels of successive frames
- Patent Title (中): 确定连续帧的异常值像素
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Application No.: US12842745Application Date: 2010-07-23
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Publication No.: US08774544B1Publication Date: 2014-07-08
- Inventor: Gabor Szedo , Jeffrey D. Stroomer , Jose R. Alvarez
- Applicant: Gabor Szedo , Jeffrey D. Stroomer , Jose R. Alvarez
- Applicant Address: US CA San Jose
- Assignee: Xilinx, Inc.
- Current Assignee: Xilinx, Inc.
- Current Assignee Address: US CA San Jose
- Agent LeRoy D. Maunu
- Main IPC: G06K9/40
- IPC: G06K9/40 ; H04N5/21

Abstract:
Circuits, systems, and methods for processing outlier pixels include a spatial filter and a temporal filter. The spatial filter is configured to compute a pixel difference for each pixel as a function of a pixel value of the pixel and pixel values of nearby pixels within each frame. The spatial filter is configured to dynamically add the pixel to a candidate list when the pixel difference exceeds a threshold value. The temporal filter dynamically removes a pixel from the candidate list when there is a divergence of a pixel value of the pixel in successive frames. The temporal filter determines a pixel in the candidate list is an outlier pixel when there is no such divergence in the successive frames.
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