Control method of audio-video archival quality detection system

Abstract

The invention relates to a control method of an audio-video archival quality detection system. The method comprises the following step: 1) black field detection algorithm; 2) static-frame detection algorithm; 3) skip frame detection algorithm: performing subtraction on the corresponding pixels of the videos of the adjacent frames, solving the specific value on the acquired difference, comparing the specific value with the corresponding threshold to judge whether is the skip frame; 4) mosaic detection algorithm; 5) fuzzy detection algorithm; and 6) accompanying sound deficiency detection algorithm. On the one hand, the intelligence of the court hearing disc quality detection is realized, the extreme urgency that the court is disc more and people less is solved; on the other hand, the scientific management standard of the court audio-video is constructed through the investigation and survey and brainstorm, the standardization of each loop is realized, and the informatization level is improved; the detection of the black field, the static frame, the skip frame, the mosaic, the fuzzy, the accompanying sound deficiency and like loss situation is realized through the technique problem, and the detection duration is controlled within 10% of the video duration.

Description

technical field [0001] The invention relates to an audio and video file quality detection device, in particular to a control method for an audio and video file quality detection system. Background technique [0002] 1. Background [0003] (1) Research background [0004] With the increase of litigation cases, the number of audio and video files has grown rapidly. Faced with a huge number of trial CDs to be reviewed, the court staff's way of checking and playing one by one conflicts with the scientific and rigorous requirements of the review work. The research group proposes to develop an audio and video file quality inspection system to evaluate the content quality of CDs. By screening and replicating CDs and migrating file data in a timely manner, the file data of CDs can stand the test of history and give full play to the objectiveness and quality of court hearing videos. Comprehensive, authentic features. This topic will become an innovative measure of the Beijing No. ...

AI Technical Summary

Problems solved by technology

[0031] 2. No reference objective evaluation algorithm

[0038] 3. Current situation and main problems of audio and video file management

[0045] (3) Main problems in video quality evaluation of court trial

[0047] The current court trial video files account for 12% of the archived files, and due to the increase in the number of court cases in recent years, in order to complete the review of the quality of the archived trial video files and ensure the standardization of the review work, the court needs to arrange 70 people Sitting in front of the computer for eight hours a day to play court trial videos is the only way to complete the detection task. At present, there are only 3 staff members in the archives department of our hospital, and it is impossible to complete the above tasks

[0048] 2. The video quality evaluation process lacks norms and standards

However, there are no strict requirements for the quality of discs, and the subjective evaluation is only made by the staff who browse and play discs one by one with human eyes, and does not use any international and domestic standard image quality subjective evaluation methods. The quality evaluation results depend entirely on the evaluators’ subjective to feel

[0050] 3. The audio and video quality evaluation results lack unified normative records

[0054] However, with the increase of litigation cases, the number of court hearing video discs has grown rapidly. Compared with the huge number of discs to be reviewed, the court staff adopts a one-by-one viewing method to check the video quality.

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