A Structure-Adaptive View-Invariant Linear Feature Matching Method for Wide Baseline Images

A technology of straight line feature and matching method, which is applied in the fields of instrument, calculation, character and pattern recognition, etc. It can solve the problems of unreliable feature descriptors, affecting matching results, and low similarity of feature descriptors of the same name.

Active Publication Date: 2020-09-01
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

The above methods based on feature descriptors have a common deficiency: when there is a large change in viewing angle between the stereo pairs and the depth of the object in the image area changes significantly, the regular feature areas in these methods and the feature descriptions built on this basis The robustness of symbols is poor, which affects the final matching results
However, in this method, the symmetrical feature area constructed around the intersection point of the line feature pair is difficult to adapt to the geometric deformation of the image area with discontinuous parallax on the wide baseline image (such as the edge of the building, etc.)
Part of the image content in the feature area is difficult to maintain consistency under the change of image viewing angle, resulting in low similarity of feature descriptors with the same name
In addition, the method of finding salient points on straight line features is susceptible to the inconsistency of the lengths of straight lines with the same name, resulting in unreliable feature descriptors constructed

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  • A Structure-Adaptive View-Invariant Linear Feature Matching Method for Wide Baseline Images
  • A Structure-Adaptive View-Invariant Linear Feature Matching Method for Wide Baseline Images
  • A Structure-Adaptive View-Invariant Linear Feature Matching Method for Wide Baseline Images

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[0082] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0083] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention discloses a structure-adaptive wide-baseline image perspective-invariant line feature matching method, which belongs to the field of remote sensing image processing. The method includes extracting reference image straight line features and search image straight line features from the reference image and search image respectively and compiling multiple reference image straight line feature groups and multiple search image straight line feature groups; The feature group performs the initial matching of the straight line features of the angle of view invariance, and estimates the epipolar geometric relationship between the reference image and the search image; The second matching is to perform single-line feature matching on the reference image line features and the search image line features that have not been successfully matched; the results of all three matchings are combined to obtain the final matching result. The present invention proposes a straight line feature matching method with constant viewing angle, which effectively improves the number of matched straight line features and the correct rate.

Description

technical field [0001] The invention belongs to the field of remote sensing image processing, and in particular relates to a structure-adaptive wide-baseline image viewing angle-invariant line feature matching method. Background technique [0002] With the continuous improvement of image resolution, most of the artificial objects on the image, such as buildings and roads, can be described by straight line features. The straight line feature is located on the edge of the target contour, contains rich semantic information and geometric meaning, can better express the target structure, reflect the high-level information of the image and the target scene, and use the straight line feature as a matching primitive for feature matching in fine 3D modeling of images, etc. important in application. [0003] After years of development, researchers have proposed a large number of line feature matching methods suitable for different scenarios. According to the difference of constraint...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/46G06K9/62
Inventor 陈敏严少华赵怡涛朱庆
Owner SOUTHWEST JIAOTONG UNIV
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