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A Projected Interactive Region Localization Method Based on Improved Line Detection

A line detection and projection interaction technology, 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: 2021-09-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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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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  • A Projected Interactive Region Localization Method Based on Improved Line Detection
  • A Projected Interactive Region Localization Method Based on Improved Line Detection
  • A Projected Interactive Region Localization Method Based on Improved 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 interactive area positioning method based on improved line detection, comprising the following steps: S1, image acquisition, grayscale processing of the image, weighted average of RGB three components according to different weights to obtain a grayscale image; S2. Use the high-core Laplacian filter to perform convolution operation on the grayscale image; S3. Based on the binarization of the histogram, use the sliding window method to deselect each pixel by using the histogram feature in the window Noise screening; S4. Use the Hough line detection algorithm to detect the image after denoising, and use the characteristics of the projection area to screen out four boundary lines, and use the obtained four boundary lines to realize the positioning of the projection area.

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