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

Apparatus and method for objective assessment of DCT-coded video quality with or without an original video sequence
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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