System for mosaicing videos by adopting brightness and color cast between two videos

A video splicing and video technology, applied in luminance and chrominance signal processing circuits, components of TV systems, components of color TVs, etc. The effect of reducing the amount of data calculation

Inactive Publication Date: 2016-06-01
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • System for mosaicing videos by adopting brightness and color cast between two videos
  • System for mosaicing videos by adopting brightness and color cast between two videos
  • System for mosaicing videos by adopting brightness and color cast between two videos

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[0025] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0026] Such as figure 1 As shown, the present invention provides a kind of system that adopts two-way video brightness and color shift to video splicing, comprises image acquisition module 101 and receives two-way YUV format video signals, and image acquisition module selects commonly used video camera among the present invention, video The format is YUV422 video signal, the resolution is 720*576, and the pixel clock frequency is 27MHz. The image acquisition module 101 sends one path as the target frame and the other path as the reference frame to the data synchronization module.

[0027] The function of the used data synchronization module 102 is to satisfy the operation speed of the multiplier in the target brightness adjustment module 104 , and needs to synchronize the clock frequency of the target frame to 83 MHz. At the same time, in order to meet the phase syn...

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Abstract

The invention discloses a system for mosaicing videos by adopting brightness and color cast between two videos. The system comprises an image acquisition module used for receiving two video signals of a YUV format, taking one signal as a target frame and the other signal as a reference frame, and then transmitting the target frame and the reference frame to a data synchronization module; the data synchronization module synchronizes horizontal and vertical signals and pixel clock signals of the target frame and reference frame fields, provides a required clock domain for the system, and performs phase synchronization on two videos; in a video mosaic SoC system, the system selects one video image as the reference frame, and preprocesses an input target frame based on a white balance algorithm and a linear brightness adjustment algorithm of a gray-edge; a method for adjusting multiple input videos to keep color and brightness of the input videos to be consistent is proposed, so that image color and brightness change after mosaic and fusion can be more uniform and natural.

Description

technical field [0001] The invention relates to the field of image processing and video processing, belongs to the category of reducing brightness and color shift before multi-channel camera video splicing, and in particular relates to a system for video splicing using brightness and color shift between two-way videos. Background technique [0002] With the rapid development of today's multimedia technology, the use of digital cameras, video cameras, mobile phones and other devices to obtain video and image information is becoming more and more widespread. However, people often need to obtain panoramic images with wide viewing angles and large scenes to meet specific applications. These devices cannot meet Obtain the demand for wide viewing angle video. Although some hardware devices such as fisheye lens and wide-angle lens can obtain panoramic images, these devices are expensive and not suitable for wide application. Video splicing technology is to combine video sequences ...

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Application Information

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IPC IPC(8): H04N5/262H04N9/73H04N9/77
CPCH04N5/262H04N9/73H04N9/77
Inventor 史再峰王晶波曹清洁庞科杜增权
Owner TIANJIN UNIV
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