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LiDAR-based planar touch method

A laser radar, planar technology, applied in the re-radiation of electromagnetic waves, the input/output process of data processing, image data processing and other directions, can solve the problems of difficult support, difficult installation and high cost, to improve the stability of Lupin and stability, The effect of strong anti-interference ability

Active Publication Date: 2020-01-10
小视科技(江苏)股份有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to propose a planar touch method based on laser radar, using single or multiple LiDAR is enough, no other medium is needed, the photoelectric sensor is used for distance measurement, and converted into plane coordinates, and multi-touch coordinates are obtained within the measurement range to solve the problem of touch interaction on any plane

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Embodiment Construction

[0029] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0030] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments introduced above, as well as those concepts and implementations described in more detail below, can be implemented in any of numerous ways.

[0031] combine Figure 1-Figure 5 As shown, the laser radar-based planar touch method according to an embodiment of the present invention includes the following steps:

[0032] Step 1, arrange at least one laser radar in the measurement area;

[0033] Step 2. For any two measurement points in the measurement area, their positions...

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Abstract

The invention provides a planar touch method based on a laser radar. The method comprises the steps of: step 1, arranging at least one laser radar in a measurement area; step 2, for arbitrary two measurement points in the measurement area, continuously obtaining multiple groups of data returned by the laser and measured by the two measurement points by using the laser radar, wherein the laser radar scans at a fixed incremental angle, and each group of returned data comprises an accumulated angle of the measurement point at a current angle of the laser radar, and the distance of the measurementpoint at the current angle of the laser radar; step 3, converting the data returned by the laser radar into a depth perception diagram; step 4, obtaining indexes of left and right endpoints of each segment of bright spot according to the depth perception diagram; and step 5, converting the coordinates of the above rectangular coordinate system into pixel coordinates in a display plane. Accordingto the planar touch method provided by the invention, the point cloud data are combined with image processing, an estimated point can be calculated efficiently and intuitively in an image manner, andthe anti-interference ability is relatively high. The estimated angle and the estimated distance of each point are obtained by figuring out the center of gravity in the area of a gray level image, andthe robustness and stability of the data are improved.

Description

technical field [0001] The present invention relates to the technical field of image touch interaction, in particular to a laser radar-based planar touch method. Background technique [0002] At present, touch technology is mainly divided into capacitive and resistive. Both capacitive and resistive touch detection require the use of specific touch media, such as capacitive screens or resistive screens, whether they exist in an independent form or in combination. methods, such as capacitive / resistive screens of mobile phones, in which there is a layer of touch screen used to realize photoelectric conversion. This type of touch method is expensive and cannot be used for touch support in large scenes. Contents of the invention [0003] The purpose of the present invention is to propose a planar touch method based on laser radar, using single or multiple LiDAR is enough, no other medium is needed, and photoelectric induction is used for distance measurement, and converted int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/88G01S7/48G06F3/042G06F3/041G06T7/66G06T7/70
CPCG01S7/4802G01S17/88G06F3/0418G06F3/0425G06T7/66G06T7/70
Inventor 杨帆白立群
Owner 小视科技(江苏)股份有限公司
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