Feature descriptor determination method and device and computer readable storage medium
A technology of feature descriptors and determination methods, which is applied in the field of image processing and can solve problems such as impact reliability and impact.
Active Publication Date: 2020-06-19
KE COM (BEIJING) TECHNOLOGY CO LTD
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[0003] At present, due to various reasons (such as different shooting angles), image features will undergo different deformations in different directions, which will affect the reliability of the feature descriptors of the determined feature points, thereby affecting the image feature matching. , the reliability of the matching result
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[0103] Hereinafter, exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited by the exemplary embodiments described here.
[0104] It should be noted that relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
[0105] Those skilled in the art can understand that terms such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different steps, devices or modules, etc. necessary logical sequence.
[0106] It should also be understood that in the embodiments of the present disclosure, "...
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The embodiment of the invention discloses a feature descriptor determination method and device and a computer readable storage medium. The method comprises the steps of obtaining a normal vector of afeature point on a first image; determining a local coordinate system according to the normal vectors of the feature points; wherein the normal vector of the feature point represents the Z-axis direction of the local coordinate system; determining a first image block composed of feature points on the first image and a neighborhood point set of the feature points, and determining a target front view used for simulating a real space sampling area corresponding to the first image block on a plane determined by the X axis and the Y axis of the local coordinate system; and determining feature descriptors of the feature points according to the first image, the local coordinate system and the target front view. According to the embodiment of the invention, the reliability of the feature descriptors of the determined feature points can be ensured, and the reliability of the matching result can also be effectively ensured when the feature descriptors are used for image feature matching.
Description
technical field [0001] The present disclosure relates to the technical field of image processing, and in particular to a method, device and computer-readable storage medium for determining a feature descriptor. Background technique [0002] In the technical field of image processing, image feature matching is required in some cases. For example, when there is a need to identify whether the characters in two images are the same person, image feature matching needs to be performed. In this case, the feature descriptors of the feature points on the two images may be determined respectively, and then the feature descriptors of the feature points on the two images may be compared, so as to realize image feature matching based on the comparison result. [0003] At present, due to various reasons (such as different shooting angles), image features will undergo different deformations in different directions, which will affect the reliability of the feature descriptors of the determi...
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IPC IPC(8): G06K9/62
CPCG06V10/7515
Inventor 张文涛胡洋
Owner KE COM (BEIJING) TECHNOLOGY CO LTD