Water area measuring method and system based on monocular and binocular vision collaboration

Abstract

The invention discloses a water area measurement method and system based on monocular and binocular vision collaboration. The method includes the steps: shooting, by a binocular camera, a binocular image pair comprising a left-eye image and a right-eye image; matching the feature point pairs, calculating sparse parallax points in a water area of the left-eye image and the depth value of each sparse parallax and forming a pixel point set with effective depth values in the water area of the left-eye image; distributing a corresponding depth propagation area for each pixel point with an effective depth value, and cooperatively reckoning the depth value corresponding to each pixel point based on monocular and binocular vision; and calculating the actual area represented by each pixel grid according to the depth value of each pixel point, and accumulating the areas of all pixel grids in the water area in the left eye image to complete the water area measurement. The invention provides a convenient and accurate water area measuring method based on machine vision, solves the problem that the traditional artificial water area measuring method is time-consuming and labor-consuming, and has higher engineering application value.

Description

technical field [0001] The invention relates to a water area measurement method and system based on monocular and binocular vision collaboration, and belongs to the technical field of computer vision and area measurement. Background technique [0002] In general, as far as the traditional land area measurement method is concerned, it can be roughly divided into two types. The first is to obtain the coordinates and their corresponding positional relationships of the various points of the plot through on-the-spot measurement, and then use the coordinate analysis to calculate the area of ​​the plot; Plotting method, grid method and other methods are used to measure the area of ​​plots on paper drawings such as map and real estate map. Water area measurement is a special case of land area measurement. The coverage area of ​​the water area is related to the season, season and even date of the measurement, that is, the area of ​​the water area has a strong current trend, that is...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the previous measurement method based solely on binocular vision is greatly affected by image matching errors when processing water target images with simple textures, and cannot obtain high-precision areas. The water area measurement method with binocular vision coordination can realize accurate measurement of water area, reduce the work intensity and risk factor of surveyors and mappers, and improve work efficiency

Images