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Multi-image video stitching method and device

A video splicing and multi-picture technology, applied in the field of splicing walls, can solve the problem of high cost and achieve the effect of low cost, high controllability, simple PCB wiring and interface

Inactive Publication Date: 2014-03-05
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a multi-screen video splicing method and device for the above-mentioned high cost problem

Method used

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  • Multi-image video stitching method and device
  • Multi-image video stitching method and device

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Embodiment Construction

[0026] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] see figure 1 Shown, a kind of multi-screen video splicing method comprises the following steps:

[0028] Step S101, collecting video signals, performing decoding and conversion to obtain video interleaved signals.

[0029] As a better embodiment, the video interleaving signal obtained after decoding and converting in the present invention can be in BT.656 format, that is, after receiving the composite video signal input from DVD and VCD, it is decoded and converted into BT.656 format Digital signal. Taking four-screen video splicing as an example, since the BT.656 single-channel sampling clock frequency is usually 27Mhz output, in this embodiment, it is necessary to process 16 channels of CVBS signals (Composite Video Broadcast Signal, composite video broadcast signal), FPGA (Field- Programmable Gate Array (...

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Abstract

The invention provides a multi-image video stitching method and device. The method includes the following steps of collecting video signals, conducting decoding conversion, and then obtaining video interwoven signals; separating and analyzing the video interwoven signals, obtaining synchronous signals and multi-channel video interwoven signals, and conducting cross processing on the multi-channel video interwoven signals; conducting interlacing removing on the video signals undergoing cross processing; calculating the perpendicular resolution ratio according to the synchronous signals, and judging whether the video signals undergoing interlacing removing belong to a 480p system or not according to the perpendicular resolution ratio; if yes, the video signals of the 480p system are converted into video signals of a 576p system; conducting multi-image video stitching according to the video signals of the 576p system. According to the method and the device, multi-channel video signal stitching display can be achieved through an FPGA, cost is low, the amount of collected information is large, and a PCB is simple in wire arrangement and port connection and high in controllability.

Description

technical field [0001] The invention relates to the field of splicing walls, in particular to a multi-screen video splicing method and a multi-screen video splicing device. Background technique [0002] In recent years, video surveillance systems have been widely used in many occasions, effectively replacing personnel inspections. Due to the wide range of monitoring, the application of multi-screen processors is becoming more and more common. If a four-screen processor is used, four targets can be monitored simultaneously on one monitor. Generally speaking, in addition to the function of multi-screen image stitching, the multi-screen video processor must also support more acquisition video input, multi-screen switching position, multi-screen equal width and height processing, deinterlacing and video character superposition display, etc. Features. [0003] At present, there are many multi-screen processors implemented by dedicated DSP (Digital Signal Processor, digital sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N7/18
Inventor 鲜燚曹捷
Owner GUANGDONG VTRON TECH CO LTD
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