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Pen type interactive system based on projection tracking

An interactive system and pen-type technology, applied in the field of human-computer interaction, can solve problems such as slow response speed and difficulty in realizing user identification, and achieve the effect of beautiful interaction, convenient and effective font form, and convenient and smooth pen-type writing.

Inactive Publication Date: 2010-11-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The camera-based interaction method is relatively easy to achieve multi-point interaction. When it needs to be realized on a larger screen, the cost is low, but the camera-based interaction method requires complex software processing, which is likely to cause the disadvantage of slow response speed, and It is difficult to realize the identification of the user's identity, and in the multi-point interactive system, especially when it is applied to a large-size display screen, it is extremely important to identify the user's identity

Method used

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  • Pen type interactive system based on projection tracking
  • Pen type interactive system based on projection tracking
  • Pen type interactive system based on projection tracking

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Embodiment Construction

[0031] Such as figure 1 Shown is the pen-type interactive system based on projection tracking of the present invention, including a projection unit, a projection screen, a wireless communication receiving module, an information processing and control unit, and an interactive pen, wherein the infrared projection scanning module 1 in the projection unit is higher than A certain frequency of human eye recognition frequency quickly projects a group of coded patterns on the projection screen 2 sequentially. A typical infrared projection scanning module is similar to a high-speed infrared projector, including a light source, a light modulator and a projection objective lens. The light source is Infrared LED or LD, the light modulation device can be a common image source light modulator in projection equipment such as LCD or DMD, but considering the refresh frequency and cost of the current mainstream LCD, in this embodiment, a series of encoded grating plates are used as The light m...

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Abstract

The invention relates to a pen type interactive system based on projection, comprising an infrared projection scanning system, a projector, a projection screen, an interactive pen and a wireless communication receiving module. An infrared projection scanning module projects an infrared coding image used for tracking an object, and the projector also projects a display image designated by a customer to the projection screen; the interactive pen moves on the projection screen, and an infrared light signal is received through a sensor in the pen and transmitted to the wireless communication receiving module through a wireless transmitting part after data processing; and the receiving module is connected with customer premise equipment to complete interaction. The interactive system can meet the requirements of large-area interaction and accurately track and position the interactive pen. Based on the accurate tracking and positioning of the interactive pen and the identification function, the realistic interactive effect of brush pen writing is realized by designing the pen point.

Description

technical field [0001] The invention belongs to the field of human-computer interaction, and in particular relates to a pen-type interactive system based on projection tracking. Background technique [0002] With the development of computer and multimedia technology, large-screen display systems with human-computer interaction functions have been widely used in various fields, and have become indispensable equipment in multimedia display, large-scale conferences and modern teaching, and the position tracking of interactive objects It is one of the key technologies in the human-computer interaction system. According to the display principle and interaction principle, the human-computer interaction display system can be divided into many different types. At present, touch screen is a common and widely used human-computer interaction display system in daily life. Traditional touch screens can be divided into resistive touch screen, capacitive touch screen, infrared through-beam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/033G06F3/041G06F3/042G06F3/0354
Inventor 王涌天郭倩蕊刘越翁冬冬
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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