Method and device for obtaining homonymous points of oblique images of aerial multi-view images
A multi-view image and acquisition method technology, applied in the field of aerial photography, can solve problems such as difficult to ensure search efficiency, achieve the effect of reducing search time and improving matching efficiency
Active Publication Date: 2018-10-02
CHINA TOPRS TECH
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[0017] However, in the multi-view image, if the matching method of the same-name point mentioned above is used to find the same-name point, it is difficult to guarantee the efficiency of the search
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[0072] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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. 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 those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0073] 相关技术中的,在进行多视影像匹配时,采用的是传统的匹配技术,即:不论倾斜影像还是垂直影像,...
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The invention provides a method and a device for acquiring homonymous points of oblique images of aerial multi-view images, and relates to the field of aerial photography. The method for obtaining the image homonym points of aerial multi-view images provided by the present invention adopts the method of first using multiple reference images with the same viewing angle to determine the optimized object square element, which determines the optimized object square by first using multiple reference images with the same viewing angle According to the determined optimized object square element and the attitude information of the target oblique image, the same name point of the reference feature point is determined. Since the texture of the reference image with the same viewing angle is similar, the accuracy of the optimized object square element obtained is higher. Furthermore, after determining the optimized object square element with higher accuracy, each time you match, you only need to resample again according to the optimized object square element, instead of adjusting the direction of the object square element every time. Find the feature point with the largest SNCC coefficient on the oblique image of the target, thereby reducing the search time and improving the matching efficiency.
Description
technical field [0001] The present invention relates to the field of aerial photography, in particular to a method and device for acquiring oblique image homonyms of aerial multi-view images. Background technique [0002] Aerial photography, also known as aerial photography, refers to the technology of using aerial cameras to take pictures of ground scenes on airplanes or other aviation vehicles. Classified according to the tilt angle of the photo (the tilt angle of the photo is the angle between the main optical axis of the aerial camera and the ground vertical line (main vertical line) passing through the center of the lens), the photography method can be divided into vertical photography and oblique photography. [0003] Among them, oblique photography technology is a high-tech developed in the field of international surveying and mapping in recent years. It breaks through the limitation that orthophoto images can only be taken from a vertical angle in the past. The angl...
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IPC IPC(8): G06K9/62
CPCG06V10/76
Inventor 李英成蔡沅钢刘晓龙朱祥娥罗祥勇
Owner CHINA TOPRS TECH