A real time panorama video splicing method based on ORB characteristics and an apparatus

A panorama video and video technology, which is applied to TVs, color TVs, components of color TVs, etc., can solve the problems of slow video splicing speed and large amount of calculation for single-frame image splicing.

Inactive Publication Date: 2014-01-15
CENT SOUTH UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for real-time stitching of panoramic video based on ORB features to solve technical problems such as large amount of calculation for single-frame image stitching in video and slow video stitching speed.

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  • A real time panorama video splicing method based on ORB characteristics and an apparatus
  • A real time panorama video splicing method based on ORB characteristics and an apparatus
  • A real time panorama video splicing method based on ORB characteristics and an apparatus

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation process, but the protection scope of the present invention is not limited to the following embodiments.

[0042] Such as figure 1 Shown is a block diagram of a real-time panoramic video stitching method based on ORB features in an embodiment of the present invention, including the following steps;

[0043] Step S101 starts the operation to collect multiple channels of synchronous video data. Wherein, in the embodiment of the present invention, the processor generates a synchronous signal to control multiple cameras to synchronously capture and decode the video, and it is necessary to ensure that there will be a relatively large overlapping area between the images when capturing.

[0044] Step S102 preprocesses the images of each channel at the same time, that is, converts the color image into a 256-level grayscale image, and denoises...

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Abstract

The invention discloses a real time panorama video splicing method based on ORB characteristics. The real time panorama video splicing method based on the ORB characteristics comprises the following steps: acquisition of multipath synchronized video data is started; pretreatment is carried out on images in various paths at a same moment, and color images are changed into gray scale images of 256 levels, and a de-noising processing is carried out on the images through employing a Gaussian filter; the ORB feature extraction algorithm is employed to carry out feature point extraction on the images in the various paths at the same moment, and ORB characteristic vectors of the feature points are calculated; through the adoption of the nearest neighborhood matching method and the RANSAC (random sample consensus) matching method to determine a homography matrix array between corresponding frames of the synchronized videos; frame scene splicing is carried out according to the homography matrix array; and finally spliced videos are output. The real time panorama video splicing method based on ORB characteristics and the apparatus are advantageous in that: the feature extraction speed and the coupling effect are improved in the image splicing process.

Description

Technical field [0001] The invention belongs to the technical field of computer vision image processing, in particular to a real-time panoramic video splicing method and device based on ORB features. Background technique [0002] Image mosaic technology is the technology of stitching several partially overlapping images into a large seamless high-resolution image. Use ordinary cameras to obtain wide-field scene images. Because the resolution of the camera is fixed, the larger the scene is, the lower the image resolution will be. However, panoramic cameras and wide-angle lenses are not only very expensive, but also have serious distortion. In order to obtain an ultra-wide field of view or even a 360° panorama without reducing the image resolution, a method of image stitching using a computer has emerged, and this method has developed rapidly in the past two years. Now image stitching technology has become the research focus of computer graphics, and is widely used in space e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/262H04N5/265
Inventor 许雪梅黄征宇张键洋杜捷李丽娴李岸周立超陶少华尹林子
Owner CENT SOUTH UNIV
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