相似图像匹配中的异常值抑制

Q1 Computer Science
Qingqing Chen , Junfeng Yao
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引用次数: 0

摘要

背景图像匹配在许多计算机视觉任务中至关重要,例如三维重建和同步视觉定位和映射。匹配的准确性显著影响了后续的研究。由于它们的局部相似性,当图像对包含可比较的模式但特征对的定位不同时,由于忽略了全局运动一致性,可能会发生错误的识别。方法提出一种基于全局运动一致性的图像匹配滤波算法。它可以作为其他匹配算法基于运动平滑原理产生的初始匹配结果的后续匹配滤波器。可首先使用特定匹配算法来执行初始匹配;然后,结合全局特征向量的旋转和运动信息,有效识别离群匹配;其原理是,如果匹配结果准确,则任何匹配点所形成的特征向量应具有相似的旋转角度和移动距离。因此,使用全局运动方向和全局运动距离一致性来拒绝不同位置相似模式造成的异常值。结果利用4个数据集验证了该方法的有效性。使用三个在不同位置具有相似模式的数据集来测试容易被其他算法错误匹配的相似图像的结果,并使用一个常用数据集来测试一般图像匹配问题的结果。实验结果表明,该方法在识别初始匹配集中的不匹配方面比其他先进算法更准确。结论本文提出的离群值抑制匹配方法可以显著提高不同位置具有局部相似特征对的相似图像的匹配精度,为后续计算机视觉任务提供更准确的匹配结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Outliers rejection in similar image matching

Background

Image matching is crucial in numerous computer vision tasks such as 3D reconstruction and simultaneous visual localization and mapping. The accuracy of the matching significantly impacted subsequent studies. Because of their local similarity, when image pairs contain comparable patterns but feature pairs are positioned differently, incorrect recognition can occur as global motion consistency is disregarded.

Methods

This study proposes an image-matching filtering algorithm based on global motion consistency. It can be used as a subsequent matching filter for the initial matching results generated by other matching algorithms based on the principle of motion smoothness. A particular matching algorithm can first be used to perform the initial matching; then, the rotation and movement information of the global feature vectors are combined to effectively identify outlier matches. The principle is that if the matching result is accurate, the feature vectors formed by any matched point should have similar rotation angles and moving distances. Thus, global motion direction and global motion distance consistencies were used to reject outliers caused by similar patterns in different locations.

Results

Four datasets were used to test the effectiveness of the proposed method. Three datasets with similar patterns in different locations were used to test the results for similar images that could easily be incorrectly matched by other algorithms, and one commonly used dataset was used to test the results for the general image-matching problem. The experimental results suggest that the proposed method is more accurate than other state-of-the-art algorithms in identifying mismatches in the initial matching set.

Conclusions

The proposed outlier rejection matching method can significantly improve the matching accuracy for similar images with locally similar feature pairs in different locations and can provide more accurate matching results for subsequent computer vision tasks.

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来源期刊
Virtual Reality  Intelligent Hardware
Virtual Reality Intelligent Hardware Computer Science-Computer Graphics and Computer-Aided Design
CiteScore
6.40
自引率
0.00%
发文量
35
审稿时长
12 weeks
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