Research And Practice Of Video Image Quality Test Technology

The main content of this paper is video image quality detection technology research and practice.There are a variety of video image quality evaluation methods,usually from aspects such as clarity, color cast, contrast and signal-to-noise ratio to measure,but detection of image clarity is not only difficult but also focus.In this paper,we mainly from the aspects of definition to study two kinds of typical video quality problems and detection and assessment.The first category is the mosaic problem, it is a typical result in loss of information due to the quality of the transmission network disruption caused, and add the mosaic of artificial factors.The second category is the blot problem,it is generated by the excessive number of digital playback media player or contamination.This paper from the definition of video,establish scoring criteria of video quality,and use of objective evaluation method for two common types of video quality problems such as mosaics and blotches,namely the establishment of quality testing model, the development of a video image quality detection system. The system to comprehensive testing and analysis, and a test report according to the test results can be measured video quality problems, given the measured video quality assessment level.