| 摘要 |
The invention relates to a method for assessing image quality degradation and to a device (DEC) therefore. Said device comprises means (INP) for receiving distorted image data, means (INP) for receiving side information about at least one feature in respective undistorted image data, means (VAA) for extracting at least one respective feature from the distorted image data, means (VAA) for generating further information about the at least one extracted feature and means for assessing (PMOS) the quality degradation using the generated information and the received side information wherein the at least one feature and the at least one extracted feature are artefacts of a same type. The key technique of the invention is the type of metadata inserted into the video stream. By this additional information about artefacts in the undistorted image, problems of video quality measurement induced by content diversity, codec difference, and configuration difference, can be solved.
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