| 摘要 |
A method of and an arrangement for obtaining quality indicators for an objective assessment of a degraded or output video signal with respect to a reference or input video signal. The strength of edges or signal transitions in both the input and the output video signals are calculated to provide input and output edge signals. By processing the edge signals, introduced edges and omitted edges in the output edge signal are established. For each of the luminance and chrominance signals of a color video signal first and second quality indicators are obtained from normalized values of the introduced edges and omitted edges, relative to the output edge signal and the input edge signal normalized by first and second normalization factors, respectively. By using smeared Sobel filtering, correlation of calculated MOS and observed MOS by human test persons reaches a value of above 0.9.
|
