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Projection interaction area positioning method based on improved straight line detection

A technology of line detection and projection interaction, which is applied in the field of image processing, can solve the problem that the line detection method cannot be well applied to the projection interaction area positioning, and achieve the effect of facilitating coordinate correction and solving blurred boundary problems

Active Publication Date: 2020-06-16
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing line detection method cannot be well applied to the positioning of projection interaction areas, and propose a projection interaction area positioning method based on improved line detection

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  • Projection interaction area positioning method based on improved straight line detection
  • Projection interaction area positioning method based on improved straight line detection
  • Projection interaction area positioning method based on improved straight line detection

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] The principle of line detection: Given n points in the image, suppose we want to find a subset of these points that are located on a line. A feasible method is to first find all lines that are determined by each pair of points, and then find all A subset of points that are close to a particular line. The problem with this process involves finding lines, and for each point and all lines to perform comparison, which means a huge amount of computation. In the actual image processing process, use the line detection method proposed by Hough: source image -> grayscale image -> threshold binarized image -> Hough transform line detection. This method has a good effect when the image background is simple and the outline of the object is obvious.

[0031] However, in the projected image of the present invention and the projected area to be detected such as...

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Abstract

The invention discloses a projection interaction area positioning method based on improved straight line detection, and the method comprises the following steps: S1, image collection: carrying out thegraying of an image, and carrying out the weighted averaging of RGB three components according to different weights, and obtaining a gray level image; S2, performing convolution operation on the grayscale image by using high-kernel Laplace filtering; S3, based on binaryzation of a histogram, denoising and screening each pixel by using histogram features in a window body by adopting a sliding window method; and S4, detecting the denoised image by using a Hough straight line detection algorithm, screening out four boundary lines by using the characteristics of the projection area, and realizingprojection area positioning according to the obtained four boundary lines.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for locating projection interaction areas based on improved line detection. Background technique [0002] Human-computer interaction technology is an important research content of computer science, and the interaction methods are also constantly developing. From the initial mouse and keyboard interaction to touch screen interaction, to the more popular VR interaction today, each new interaction method will promote the development of computer science. , but also bring a new interactive experience to users. [0003] Projection interaction is an interaction technology formed by combining visual sensors and projectors. This interaction method projects the interactive scene onto the wall or the ground, and the user directly realizes human-computer interaction on the interaction plane. Compared with the touch screen interaction method, this method It can realize the ...

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Application Information

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IPC IPC(8): G06F3/01
CPCG06F3/011
Inventor 谢巍潘春文王缙张浪文
Owner SOUTH CHINA UNIV OF TECH