Patent ID: 6011868
Filing Date: 2000-01-04
Classification: H04N

Abstract:
A bitstream quality analysis system comprising:an MPEG video decoder to receive a video elementary bitstream and selectively decode the video elementary bitstream in layers, to a layer of decoding that corresponds to a level of analysis which is selected by a user and which is performed on the video elementary bitstream, the video decoder extracting decoded parameters characterizing the video elementary bitstream;a compressed domain quality meter, operatively coupled to the video decoder, to receive the decoded parameters corresponding to the layer of decoding performed by the video decoder and calculate at least one metric of an amount of distortion in a fully decoded video scene that is contained in the video elementary bitstream based on the decoded parameters and without full decoding by the video decoder; anda graphical user interface, operatively coupled to the video decoder and the compressed domain quality meter, to receive the decoded parameters from the video decoder and the at least one metric from the compressed domain quality meter, the graphical user interface displaying the decoded parameters and the at least one metric.