Invention Grant
- Patent Title: Anomalous pixel detection
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Application No.: US14847972Application Date: 2015-09-08
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Publication No.: US10025988B2Publication Date: 2018-07-17
- Inventor: Jie Yuan , Onkar Nath Tiwari , Arvind Nayak , G. V. Varaprasad
- Applicant: Tektronix, Inc.
- Applicant Address: US OR Beaverton
- Assignee: Tektronix, Inc.
- Current Assignee: Tektronix, Inc.
- Current Assignee Address: US OR Beaverton
- Agent Marger Johnson; Andrew J. Harrington
- Priority: IN2011/MUM/2015 20150522
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06K9/52 ; G06K9/62 ; G06K9/46 ; G06T7/00

Abstract:
A video noise analyzer for detecting residual point noise in a video generates a list of candidate defective pixels by joining results of a temporal invariance detector and a spatial outlier detector. A data store is structured to contain data describing the candidate defective pixels and/or the blocks from which the pixels were selected. In other embodiments, a video noise analyzer includes a first salient analyzer structured to compare pixels within a block to a mean value of other pixels within the same block, a first threshold processor to generate a first pixel candidate list including pixels that differ significantly from their neighboring pixels, a second salient analyzer structured to generate a difference value between a subject pixel, its neighboring pixels, and neighbors of the neighboring pixels, and an identifier to label as a candidate dead pixel those pixels having a frequency occurrence of visual saliency greater than a predefined frequency threshold.
Public/Granted literature
- US20160342843A1 ANOMALOUS PIXEL DETECTION Public/Granted day:2016-11-24
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