Journal of Northeastern University(Natural Science) ›› 2021, Vol. 42 ›› Issue (1): 31-36.DOI: 10.12068/j.issn.1005-3026.2021.01.005

• Information & Control • Previous Articles     Next Articles

AVS-S Coding Based on Background Model

SANG Ai-jun1, YU Huan1,2, ZHANG Han-yu1   

  1. 1. College of Telecommunication Engineering, Jilin University, Changchun 130022, China; 2. Shanghai Radio Equipment Research Institute, Shanghai 201109, China.
  • Online:2021-01-15 Published:2021-01-13
  • Contact: SANG Ai-jun
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Abstract: In order to improve the coding efficiency of surveillance video, a new background frame update method was proposed, namely, iterative update mean value method, under the coding framework of AVS surveillance extension grade. The nature of the pixel in a certain frame was determined according to the principle of different frequencies of occurrence of a certain pixel in the foreground area and in the background area. Through the test comparison of the surveillance video Crossroad, Overbridge and Classover, the pixel values of the background model corresponding to the pixels of different nature were obtained. The results showed that the shortcomings that slow moving objects are difficult to eliminate from the background are improved to a certain extent in this experiment. At the same time, the integrity of the background information is strengthened and the quality of the background frame is improved. Under the conditions of the same bit rate and the same peak signal-to-noise ratio, compared with the AVS benchmark method, the average code saving rate is 43.283% and the peak signal-to-noise ratio is increased by 1.186dB on average. The coding efficiency of its surveillance video is also improved.

Key words: background frame update method; background model; surveillance video; monitoring the AVS stretch grade; AVS benchmark grade

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