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Multisource video stitching method with time domain synchronization calibration technology

A video splicing, time domain technology, applied in the field of video processing, can solve the problems of synchronization, the difficulty of accumulating errors to obtain accurate image information, and the inability of different cameras to complete the time.

Inactive Publication Date: 2013-01-02
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

For the frame images of different video sources, because different cameras cannot complete the time synchronization, there is a time error in the image frames of different video sources, and it is difficult to find the best matching frames of different video sources for registration and registration in the subsequent stitching process. stitching
And because of this time error, there is an accumulation of time errors in the objects captured by different video sources, so that ghost images and object deformations will inevitably appear in the moving objects that appear during the video recording process. Accumulated errors make it more difficult to obtain accurate image information

Method used

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  • Multisource video stitching method with time domain synchronization calibration technology
  • Multisource video stitching method with time domain synchronization calibration technology
  • Multisource video stitching method with time domain synchronization calibration technology

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Embodiment Construction

[0037] In the traditional multi-video source video splicing and other video processing fields, it is assumed that the starting moments of the frame images recorded by these different video sources are synchronized by generating the same Reset signal for the calibration of the recording equipment, such as Picture 1-1 shown. However, ignoring the time error of different image sensors, the two frames of images are directly registered and stitched in space using a method based on static image stitching, and an inaccurate wide-format image output is obtained. However, since there is an error within the time range of one frame at the start moment of recording of different video sources, the time vectors of recording of different video sources must be taken into account. Traditional stitching and other processing methods based on static images cannot accurately reflect the time information of video images, so they cannot be well suited for video stitching. The process of video stitc...

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Abstract

The invention belongs to the technical field of video processing. In order to avoid ghost images and object deformation during stitching of videos with moving objects and complete synchronization of information of different video sources on a timeline to enable the information to be well used for various processing based on still image registration stitching during subsequent stitching and to obtain good effect, the technical scheme includes that a multisource video stitching method with the time domain synchronization calibration technology includes the steps: storing inputted video sequences of different video sources into a frame buffer for pre-processing; detecting Harris corners of frame images of each video by an image gray value and optimizing distribution of the corners; performing coordinate unification of two to-be-stitched images spatially and completing spatial match; and performing image fusion after calibration. The multisource video stitching method with the time domain synchronization calibration technology is mainly applied to video image processing.

Description

technical field [0001] The invention belongs to the technical field of video processing, and aims at the time synchronization calibration method of different cameras for video splicing of multiple video sources, calibrates the time error existing between different cameras, and completes the synchronous video splicing of multiple video sources from two dimensions of space and time , specifically, relates to a multi-source video mosaic method with time-domain synchronous calibration technology. Background technique [0002] Nowadays, the research of stitching technology based on video images is an increasingly popular research field, and it has become a hotspot in the research of photogrammetry, computer vision, image processing and computer graphics. The multi-camera video image stitching technology has a wide range of application values ​​in photogrammetry, computer vision, remote sensing image processing, medical image analysis, computer graphics and other fields. Since or...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/265H04N5/04
Inventor 史再峰刘金涛徐江涛高静姚素英
Owner TIANJIN UNIV
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