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Panorama image splicing method based on edge vertical distance matching

A vertical distance, panoramic image technology, used in image enhancement, image data processing, instruments, etc., can solve the problems of panorama distortion, low accuracy, etc., to reduce the amount of calculation, improve the calculation accuracy, save computer time. Effect

Inactive Publication Date: 2014-03-26
GUANGZHOU COLLEGE OF SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The accuracy of the above image stitching method is not high enough, often the stitched panorama will be distorted and distorted

Method used

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  • Panorama image splicing method based on edge vertical distance matching
  • Panorama image splicing method based on edge vertical distance matching
  • Panorama image splicing method based on edge vertical distance matching

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0035] The acquisition process of the sample sequence used for stitching panoramic images is that the optical center of the camera is at the center of a circle, and it rotates around the center of the circle in the horizontal plane to take a picture at a certain angle. Although the shooting is kept on the same horizontal plane as much as possible, the original picture obtained still has a small offset in the vertical direction when there are no fixed shooting conditions such as hand-held shooting. The method of vertical edge distance matching proposed in this paper can determine the horizontal stitching relationship of the image to be stitched and also determine the vertical offset. The multi-column matching mechanism avoids local optimum, which has special advantages in the existing image stitching algorithms.

[0036] The generation of panoramas is...

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Abstract

Provided is a panorama image splicing method based on edge vertical distance matching. The method comprises the following steps: (1), extracting the edges of two images by use of a CANNY algorithm; (2), screening a matched pixel column; (3), performing matching according to variances of edge pixel ordinates; (4), performing grouping according to variance values and reflected image relative positions; (5), performing the edge vertical distance matching on each group, and determining that a smallest group distanced from statistical values is an image splicing position; and (6), performing image stitching processing. According to the invention, through matching the edge vertical distances of two neighboring images, automatic splicing of a panorama image is realized. A matching position is screened in advance so that computing amount is reduced, computing time is saved, and computing precision is improved. A vertical distance coupling algorithm can help to find out an optimal seam, i.e., the seam position is disposed at a position with smaller information content in an image, and an information key position is avoided as likely as possible; and an original image is completely reserved in most area of a splicing image so that information of the original image can be reserved to the maximum.

Description

technical field [0001] The invention relates to a scene rendering method of a 360-degree omnidirectional image, in particular to a panoramic image splicing method based on edge vertical distance matching. Background technique [0002] Panorama generation is an important part of Image-Based Rendering (IBR), which is widely used in virtual reality, video compression and transmission, medicine and other fields. A panorama refers to an image of all the scenes that can be seen visually when viewed from a fixed viewpoint with a vertical viewing angle width of 180° in a 360° direction. A simple form of panorama may be a horizontal 360° image on a fixed viewing plane. Panoramas can be obtained directly by using special equipment, but these equipment are expensive and difficult to obtain, and it is easier to use a computer for image stitching. Panoramic image stitching is a basic technology in the IBR rendering method, which refers to a scene rendering method that uses partially ov...

Claims

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Application Information

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IPC IPC(8): G06T5/50
Inventor 马乐邱少健姜思羽陈哲茂吴永琪魏韬梁俊杨剑
Owner GUANGZHOU COLLEGE OF SOUTH CHINA UNIV OF TECH
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