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System and method for reconstructing 360-degree panoramic video image

A technology of video image and panoramic video, applied in the field of digital video image reconstruction panorama, can solve the problem of incomplete field of view of scene image, and achieve the effect of high reliability, high cost performance and high consistency

Active Publication Date: 2020-01-10
XI'AN POLYTECHNIC UNIVERSITY
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for reconstructing a 360-degree panoramic video image, which solves the problem in the prior art that the field of view angle of the scene image provided by the security monitoring is not comprehensive

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the drawings and specific implementation methods.

[0026] In order to facilitate the description of the specific implementation steps, first the four coordinate systems involved in the entire reconstructed video image system and their mapping relationships, such as figure 1 As shown in the following description:

[0027] (1) Digital image coordinate system (u, v): It uses pixel points as the unit to describe the distribution of digital images in the (u, v) two-dimensional plane. The origin is at the upper left corner of the image, and the horizontal and vertical coordinates (u,v) respectively represent the number of columns and rows of pixels in the image matrix;

[0028] (2) The imaging coordinate system (x, y): It uses the physical unit of the pixel (that is, the physical size of each pixel in the digital image in the space) to describe the pixel under the (x, y) two-dimensional imaging plane The hor...

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Abstract

The invention discloses a system and method for reconstructing a 360-degree panoramic video image, and the method comprises the following steps: solving the internal and external parameters and distortion coefficients of four fisheye cameras through employing a Zhang Zhengyou calibration method based on the detection of black and white checkerboard internal corners of a calibration board; then, based on external corner point detection of the square mark block graph, solving to obtain external parameters of the four fisheye cameras under a world coordinate system; and finally, according to theinternal and external parameters and the distortion coefficient of the fisheye camera, utilizing the characteristic that the relative position relationship among the four distributed fisheye cameras is fixed, enabling a four-core processor based on an NXP S32V234FS to adopt a space-time overlapping parallel pipeline processing mechanism to perform splicing and fusion processing on video images shot by each fisheye camera, and forming a 360-degree panoramic video image in a world coordinate space; the method has the characteristics of high cost performance, high reliability, high convenience and the like.

Description

Technical field [0001] The invention belongs to the technical field of digital video image reconstruction panorama, and specifically relates to a method for reconstructing a 360-degree panoramic video image. Background technique [0002] Panoramic video plays an important role in security surveillance, battlefield reconnaissance, environmental monitoring, robot vision, and emerging virtual reality applications. However, due to the various limitations of the development of modern technology on the collection, processing and transmission of massive digital information, the video surveillance blind spot problem in security cannot be completely solved so far; on the other hand, it takes a long time to stitch the collected images, so it cannot Realize real-time monitoring. Summary of the invention [0003] The purpose of the present invention is to provide a method for reconstructing a 360-degree panoramic video image, which solves the problem that the field of view angle of the scene...

Claims

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Application Information

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IPC IPC(8): H04N5/262H04N13/122G06T3/40
CPCG06T3/4038H04N5/2624H04N13/122
Inventor 石美红薛海伟刘宝宝段俊瑞温宗周
Owner XI'AN POLYTECHNIC UNIVERSITY
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