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Splicing method suitable for video images of multi-focal-length camera

A video image and camera technology, which is applied in the stitching field of multi-focal camera video images, can solve the problems of large calculation deviation of transformation matrix between images, wrong matching, and wrong matching of images, so as to improve image effect, improve accuracy, and speed up matching The effect of the process

Inactive Publication Date: 2019-10-18
上海复瞰科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, once the image feature points are relatively similar and the number of image paths is large, it is easy to cause wrong matching.
Possible error situations are: 1. A certain number of feature matching pairs can be determined between two actually non-adjacent images due to the similarity of the scene; 2. There are some obvious mismatches between adjacent images, although currently The RANSAC technology is used to make mistakes, but it is not guaranteed to completely eliminate such mistakes
The above-mentioned similar mis-matching will lead to a large calculation deviation of the transformation matrix between images or the calculation will not converge, which will directly affect the effect of the final panorama

Method used

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  • Splicing method suitable for video images of multi-focal-length camera
  • Splicing method suitable for video images of multi-focal-length camera
  • Splicing method suitable for video images of multi-focal-length camera

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Embodiment Construction

[0031] Specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0032] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0033] Such as figure 1 As shown, on the basis of the specific arrangement of the known cameras, the image stitching of cameras with equal focal lengths is described first to ensure that there is a necessary overlapping area between adjacent cameras.

[0034] Such as figure 2 As shown in , through the known camera arrangement information, a two-dimensional coordinate system is established for the panorama with the camera in the upper left corner as the origin. The picture ...

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Abstract

The invention discloses a splicing method suitable for video images of a multi-focal-length camera. The splicing method comprises the following steps: (1) establishing coordinates for the position ofa single camera image of the multi-focal-length camera with a known arrangement mode in a panoramic image; (2) determining an overlapping region between adjacent images, and determining feature pointsof the overlapping region; (3) matching the feature points of the overlapping region, and removing the feature points with wrong matching; and (4) screening the feature points which are correctly matched, and removing the feature points which are wrongly matched again. The panoramic coordinate system is established according to the arrangement positions and the focal lengths of the camera pictures for multi-focal-length camera picture splicing, the specific overlapping area of the adjacent pictures is determined, error matching prone to occurring is avoided to a large extent, and the matchingprocess is accelerated; furthermore, an effective error detection mechanism is provided for a matching result, and the accuracy of multi-focal-length camera image feature matching can be improved.

Description

Technical field: [0001] The invention belongs to the technical field of high-definition digital video, and in particular relates to a splicing method suitable for video images of multi-focus cameras. Background technique: [0002] For fusion and stitching of multiple images with a certain overlapping area, the core technology is to find common feature points between two adjacent images. Obtain a certain number of feature matching pairs, and two camera coordinate transformation matrices can be calculated through the coordinates of the matching pairs. When there are more cameras, one camera is selected as a reference, and the images of other cameras are mapped to the plane where the camera image is located. Therefore, accurately finding feature matching pairs is the key to determine the quality of the final panoramic image. Currently, the commonly used technologies for obtaining feature points include SUFR, SIFT, and ORB. Then, by pairing the feature points between the imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T7/33
CPCG06T7/33G06T3/4038G06T2200/32
Inventor 江亲炜
Owner 上海复瞰科技有限公司
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