Detection system and detection method of base band digital video frame rate

Abstract

The invention relates to a detection system and a detection method of a base band digital video frame rate. The system comprises a video frame rate detection card, a video quality assessment analyzerand a tested video camera, wherein the video frame rate detection card comprises a dial plate, a pointer which is driven by a motor to rotate at a constant seed is arranged on the dial plate, long scale lines are arranged on the dial plate every five degrees, and short scale lines are arranged on the dial plate every one degree; the video frame rate detection card also comprises a detection stripand an image positioning point used for automatically finding dial plate and pointer positions when image recognition is performing, wherein the detection strip is composed of multiple pieces of colors with different gray levels; the video frame rate detection card is a real image card, generates a continuous movement image, provides a continuous video source for the tested video camera, and transmits data to the video quality assessment analyzer through imaging of the video camera, sampling and coding. The detection method provided by the invention adopts the detection system of the base banddigital video frame rate for detecting.

Description

technical field [0001] The invention relates to the technical field of video detection, in particular to a detection system and detection method for baseband digital video frame rate. Background technique [0002] The frame rate of baseband digital video (including uncompressed video such as DVI, HDMI and SDI, etc., and the frame rate measurement of compressed video is not discussed in this detection method) directly affects the quality of the video. Due to the special physiological structure of the human eye, when the video frame When the video frame rate is lower than 16 frames per second, you will feel obvious stuttering. When the video frame rate is higher than 24 frames per second, the human eye can feel the smoothness of the video. [0003] The video frame rate is an important index to measure a camera system. The video frame rate of an ordinary camera system is generally 24 frames / s, 25 frames / s, 30 frames / s, 50 frames / s, etc. The video frame rate of the high-speed c...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems existing in the prior art, to provide a detection system and detection method of the baseband digital video frame rate, which solves the actual frame rate measurement problem of the digital camera system, whether the video frame is dropped, reframed, etc. , can detect whether the video frame rate meets the nominal requirements, and has low requirements for equipment and operators

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