Invention Grant
US07668397B2 Apparatus and method for objective assessment of DCT-coded video quality with or without an original video sequence
失效
用或不用原始视频序列客观评估DCT编码视频质量的装置和方法
- Patent Title: Apparatus and method for objective assessment of DCT-coded video quality with or without an original video sequence
- Patent Title (中): 用或不用原始视频序列客观评估DCT编码视频质量的装置和方法
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Application No.: US11387720Application Date: 2006-03-24
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Publication No.: US07668397B2Publication Date: 2010-02-23
- Inventor: Chon Tam Le Dinh , François Rossignol , Hong Thai Nguyen
- Applicant: Chon Tam Le Dinh , François Rossignol , Hong Thai Nguyen
- Applicant Address: CA Montreal, Quebec
- Assignee: Algolith Inc.
- Current Assignee: Algolith Inc.
- Current Assignee Address: CA Montreal, Quebec
- Agency: Fasken Martineau DuMoulin LLP
- Agent Alexandre Abecassis
- Main IPC: G06K9/40
- IPC: G06K9/40 ; G06K9/46

Abstract:
A new approach to objective quality assessment of DCT-coded video sequences, with or without a reference is proposed. The system is comprised of a proprietary segmentation algorithm, a feature extraction process and a nonlinear feed-forward-type neural network for feature analysis. The methods mimic function of the human visual system (HVS): A neural network training algorithm is used for determining the optimal network weights and biases for both system modes of operation. The proposed method allows for assessment of DCT-coded video sequences without the original source being available (pseudo-reference mode). The pseudo-reference mode is also comprised of a proprietary DCT-coded video (MPEG) noise reducer (MNR), co-pending patent application No. 60/592,143.
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