Method for detecting 3G-SDI image in non-standard format

A technology of 3G-SDI and detection method, applied in the field of information data transmission, can solve the problem of inability to realize non-standard format 3G-SDI image resolution image frame rate detection, inability to correctly view video and related parameters, and inability to know data Source correctness and other issues, to achieve the effect of low error rate, reduced resolution, and easy realization

A technology of 3G-SDI and detection method, applied in the field of information data transmission, can solve the problem of inability to realize non-standard format 3G-SDI image resolution image frame rate detection, inability to correctly view video and related parameters, and inability to know data Source correctness and other issues, to achieve the effect of low error rate, reduced resolution, and easy realization

CN110490837AActive Publication Date: 2019-11-22XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Method for detecting 3G-SDI image in non-standard format
  • Method for detecting 3G-SDI image in non-standard format
  • Method for detecting 3G-SDI image in non-standard format

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0056] figure 1 An image data detection system is provided, including a 3G-SDI sending end, a 3G-SDI receiving end, FPGA and a host computer;

[0057] The 3G-SDI transmitter sends a frame of 2048*2025 black and white images with a total of 4,147,200 bytes. When the SDI output interface of the 3G-SDI transmitter is transmitted in 1080P format, a frame of images is 1920*1080*2=4,147,200 bytes. (Here 2 means one byte each for luma channel and chroma channel). Therefore, one frame of 2048*2025 black and white image can be loaded into one frame of SDI color image for transmission. Considering that the black and white image frame rate of 2048*2025 is 100fps, it needs to use two SDI interfaces to output at the same time.

[0058] At the same time, the 3G-SDI receiving end uses two 3G-SDI input interfaces to receive non-standard 2048*2025@100fps black and white video data, and the 3G-SDI standard selects 1080p@50fps. The standard format HD video image data is 1920*1080@50fps, the i...

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Abstract

The invention discloses a method for detecting a 3G-SDI image in a non-standard format. The method achieves the detection of the full resolution and frame frequency of the 3G-SDI image in the non-standard format, thereby achieving the effective evaluation of the correctness of a data source of a transmitting end and the problems that whether frame loss exists in a data transmission process or not.The method comprises the following three detection modes: mode 1, full-resolution detection of an image; mode 2, image frame frequency detection; and mode 3, detection of image display effect.

Description

technical field [0001] The invention belongs to the technical field of information data transmission, and in particular relates to a detection method of a non-standard format 3G-SDI image. Background technique [0002] The serial digital interface (Serial Digital Interface, SDI) is used to transmit the serial digital video signal (Serial Digital Interface video signal, SDI signal) to realize the digitization of movies and radio and television. In recent years, in order to meet the high-definition and high-resolution video transmission requirements, the SDI signal transmission rate has been increasing, from 270Mbit / s, 1.485Gbit / s, 2.970Gbit / s, etc. For standard SDI video transmission, the acquisition card can be used to output Watch the video and video-related parameters (resolution, frame rate, etc.) on the monitor, but for non-standard format SDI signal transmission display, the capture card on the market cannot correctly watch the video and related parameters. [0003] Th...

Claims

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Application Information

Patent Timeline
22 Nov 2019
Publication
CN110490837A
IPC
G06T7/00; G06T11/60; H04N17/00
CPC
G06T7/0002; G06T11/60; H04N17/00
Inventors
边河; 张海峰