STEREOPHOTOGRAMMETRIC METHOD BASED ON BINOCULAR VISION

WIPO Patent Application WO/2024/032233

A1

Disclosed in the present invention is a stereophotogrammetric method based on binocular vision. The method includes the following steps: image collection and image correction; stereo matching, which involves performing cost matching and cost aggregation on corrected images of different sizes, wherein cost matching refers to fusing a pixel cost, a color cost and a gradient cost of each image, so as to obtain a matching cost of the image, and cost aggregation refers to applying a minimum spanning tree and a scanning line optimization aggregation policy to the costs obtained by the cost matching of the images of different sizes, so as to compute and obtain an initial disparity map of the image of each size, and acquiring an optimal aggregation cost of an image of an original size according to a multi-size aggregation model; performing disparity computation and disparity optimization on the obtained aggregation cost, so as to acquire a disparity map; performing image segmentation on the corrected images, and determining edge pixel points of an object to be subjected to measurement; and computing an edge pixel distance of said object, and thereby completing the size measurement of said object. By means of the method in the present invention, the matching precision of contour pixels of an object to be subjected to measurement is enhanced, thereby improving the measurement precision.

SUO YINA (CN)
NING XUEBIN (CN)
YU FUXING (CN)
WANG RAN (CN)

PCT/CN2023/104336

February 15, 2024

June 30, 2023

Click for automatic bibliography generation  

UNIV NORTH CHINA SCIENCE & TECHNOLOGY (CN)

G06T7/60; G01B11/00; G01B11/24; G06T7/13; G06T7/593

CN116188558A	2023-05-30
CN111260597A	2020-06-09
CN108682026A	2018-10-19
CN113763269A	2021-12-07
US20150271472A1	2015-09-24

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