Projection positioning device and method as well as interaction system and method

Abstract

The invention discloses a projection positioning device, comprising a projector, a camera and a processing device, wherein the projector is used for projecting regularly-set strip patterns on the surface of an object to be detected; the camera is used for shooting a modulated and deformed strip image according to the shape of the surface of the object to be detected; and the processing device is used for determining a space position and/or a position change of the object to be detected according to the deformed strip image. Furthermore, the invention discloses a corresponding projection positioning method, an interaction system and an interaction method. By projecting the strip patterns on the surface of the object to be detected and capturing and analyzing the deformed strip image modulated by the evenness of the surface of the object to be detected, the higher-precise position and the faster-speed real-time trace are carried out on the object to be detected, such as a human hand with complex three-dimensional postures, so that the accurate and smooth motion sensing or touch operation are realized.

Description

technical field [0001] The invention relates to the technology of man-machine interaction, in particular to a projection positioning device and method and an interaction system and method based on projection positioning. Background technique [0002] With the rapid development of computer technology, people more and more widely use multimedia devices to display more colorful content, such as sound, image, text and video. Correspondingly, projection equipment capable of displaying large-format images has also been increasingly widely used and rapidly developed. However, the early projection system could not realize the direct interactive operation between people and the projection screen, which greatly limited its application range, such as classroom teaching, game entertainment and other occasions; it could not satisfy people's pursuit of more natural and immersive human machine interaction experience. [0003] At present, most of the more mature interactive projection sys...

AI Technical Summary

Problems solved by technology

However, based on the principle of monocular or multi-eye stereo vision to extract three-dimensional image information, the accuracy of spatial positioning is limited, and it is difficult to achieve fine "touch" operation

In addition, the visual image has a large amount of information and is susceptible to interference, so the image processing algorithm is relatively complex, and it is difficult to achieve real-time positioning and tracking, especially for the case of multi-touch, the amount of calculation is doubled

Therefore, the current interaction technology based on visual images is still difficult to meet people's practical requirements for "precise touch"

Images