Method of measuring end-to-end delay of mobile phone?video?communication application

Abstract

The invention discloses a method of measuring end-to-end delay of mobile phone?video?communication application. Firstly, a section of visual coding timestamp sequence?video is generated and displayed on an LCD display; secondly, a sender mobile phone and a receiver mobile phone build video connection via video?communication application, the visual coding timestamp sequence?video shot by the sender is sent to the receiver, and the receivers displays the conversation content with the visual coding timestamp sequence?video included on a screen; thirdly, a high-definition camera is used for shooting the LCD display and the receiver screen at the same time; and finally, the acquired video data with the visual coding timestamps included is sent to a delay analysis system, the timestamp on each frame is recognized, time difference among the timestamps is calculated, and the end-to-end delay is obtained. According to the method disclosed by the invention, from?the?perspective?of?the?computer vision, the delay measurement problem is converted into the timestamp reorganization problem, the operation process is simple, the difficult problem of synchronization of different clocks is avoided, and accuracy of delay detection is improved.

Description

technical field [0001] The invention belongs to the field of computer vision, and in particular relates to a method for measuring end-to-end delay of mobile phone video communication applications. Background technique [0002] End-to-end delay, including video acquisition delay, compression delay, transmission delay and decompression delay, is a very important parameter in the performance index of video communication applications. The accuracy of delay measurement is directly related to the quality of communication products and safety. In addition to detecting the end-to-end delay of their own video communication applications, video application developers also need to accurately detect the delay of competitors' applications, so as to effectively compare the delay indicators. Therefore, an accurate and general end-to-end delay detection method is very meaningful for video application developers. [0003] The traditional video delay detection method is: the video application...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the shortcomings of the existing end-to-end delay detection technology for mobile phone video communication applications, and to transform the delay measurement problem into a timestamp recognition problem from the perspective of computer vision

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