Method and system for reducing false matching pairs in computer image registration
An image registration and error matching technology, applied in computing, image analysis, image data processing and other directions, can solve the problems of time-consuming, inability to use the system in real time, etc., to reduce false matching pairs, improve practical value, and improve system accuracy Effect
Active Publication Date: 2019-04-05
ALIBABA GRP HLDG LTD
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[0007] However, the inventors of the present invention have found that although the consistency purification method (RANSAC, etc.) has very high accuracy and can be used in scenes with high precision requirements, it is very time-consuming (time-consuming for a conventional single image within 100 More than milliseconds), cannot be used in real-time systems and large-scale data comparison
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[0039] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.
[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.
[0041] The first embodiment of the present invention relates to a method for reducing false matching pairs in computer image registration. figure 2 is a schematic flowchart of the method for reducing false matching pairs in the computer image registration. Such as figure 2 As shown, the method includes the following steps:
[0042] In step 20...
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The invention, which relates to the technology of the computer image registration, discloses a method and system for reducing a wrong matching pair in computer image registration. During the computer image registration, purification is carried out on matching pairs of an obtained local feature point by using main direction information of the local feature point, so that detection and removing of wrong matching pairs can be realized efficiently; and the method can be applied to the system with the high real-time requirement, so that the practical value is substantially improved. In addition, purification is carried out on matching pairs of the obtained local feature point by using scale information of the local feature point or coordinate information of the local feature point, so that the wrong matching pair can be reduced further and thus the system accuracy is improved.
Description
technical field [0001] The invention relates to computer image registration technology, in particular to a method and system for reducing wrong matching pairs in computer image registration. Background technique [0002] Image registration is to detect whether two or more images obtained from different sources match. Such as figure 1 As shown in , the generally commonly used general process is: detect local features from each image; then perform element matching from these two local feature sets. Generally speaking, not every matching of local features is correct, so these matching pairs need to be purified and filtered, and finally the required registration relationship between the two images (whether matching, rotation angle, scaling, displacement, etc.). [0003] In commonly used image comparison and image search systems, commonly used methods generally include two steps of local feature extraction and matching between feature vectors. After the feature matching is co...
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IPC IPC(8): G06T7/33
Inventor 薛晖
Owner ALIBABA GRP HLDG LTD