EVALUATION OF DIGITAL PROCESSING OF TELEVISION SIGNALS
The work is devoted to the use efficiency evaluation of digital signal processing means in the systems of digital television broadcasting. The comparison of the quality of the encoded digital video by the most common codes (H. 264/AVC, XviD, Windows Media Video v9) is performed. It is shown that an objective evaluation of each codecs requires consideration of at least three analysis methods: PSNR, SSIM, VQM. The complexity of the evaluation of the digital processing means requires consideration of the expression level for a given quality score over time to the rank of codecs. So, the average image quality evaluation decreases with decreasing speed of the digital data stream, to compare the codecs is possible by correlation the average image quality evaluation and bit rate. The application of statistical approach, by sampling the instantaneous correlations for each of the codecs is possible to find the probabilistic rankings of the codecs for the three methods.