Method and system for accurately identifying contact position in deformation projection based on touch method

Abstract

The invention provides a method for accurately identifying a contact position in deformation projection based on a touch method, which comprises the following steps: acquiring a deformation projectionimage, and acquiring coordinate values of four vertexes ABCD in the deformation projection through a laser radar device; touching the screen on the projection screen in a touch mode, and obtaining the coordinate value of any touch point E through the laser radar device; selecting two transverse line segments and two longitudinal line segments passing through any point in the deformation projection image, and determining deformation projection proportion values of projection edges in the same coordinate system to be na%, nb%, nc% and nd% respectively according to the deformation projection image; and calculating the coordinate value of the point E in the orthographic projection screen through the data calibration module, and achieving touch screen data calibration. The invention further provides a system for accurately identifying the contact position in the deformation projection based on the touch method. According to the invention, the data of the touch point of the user can be accurately identified in the deformable touch screen, the user experience and comfort can be improved, and the data processing time is greatly saved.

Description

technical field [0001] The invention relates to the technical field of projection interaction, in particular to a method and system for accurately identifying the position of a touch point in a deformed projection based on a touch method. Background technique [0002] Existing projected images are mainly obtained through projection by a projector, but the problem of deformation of the projection screen often occurs during projection. For the deformation of the projection screen, it is usually necessary to manually adjust the projector so that the projection screen can project normally from the perspective of the field of view. For For complex situations, just adjust it so that it does not affect the normal viewing effect. [0003] In addition, in order to solve the problem of projection deformation in the prior art, a method of automatically correcting the screen is also designed. During the specific correction process, multiple pixels on the screen will be processed in deta...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for accurately identifying the position of the touch point in the deformed projection based on the touch method, which can solve the technical problems of inaccurate manual calibration of the screen and inaccuracy of the automatic calibration screen

[0006] The purpose of the present invention is to provide a system for accurately identifying the position of the touch points in the deformed projection based on the touch method, which can solve the technical problems of inaccurate manual calibration of the screen and inaccuracy of the automatic calibration screen

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