Gesture recognition system based on infrared image and method thereof

A gesture recognition and infrared image technology, applied in the field of gesture recognition systems, can solve the problem that the processing effect is only for a specific operating environment, and achieve the effect of ensuring uniqueness and stability, ensuring stability, and solving the instability of recognition algorithms

Inactive Publication Date: 2012-08-08
SOUTH CHINA UNIV OF TECH
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However, some of these methods are based on digital image processing, an...

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  • Gesture recognition system based on infrared image and method thereof
  • Gesture recognition system based on infrared image and method thereof
  • Gesture recognition system based on infrared image and method thereof

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[0034] Such as figure 1 As shown, the gesture recognition system based on infrared images includes an infrared lighting module, a front-end image processing module, a digital image gesture segmentation and tracking module, and the front-end image processing module includes an infrared video acquisition unit and an FPGA control and output unit connected to each other.

[0035] The infrared video acquisition unit includes a CMOS optical sensing chip with adjustable reference voltage and a lens assembly, the CMOS optical sensing chip is integrated with a DSP chip; the lens assembly is installed in front of the CMOS optical sensing chip.

[0036] Such as figure 2 As shown, the infrared lighting module is composed of four infrared LED lamp tubes 1, and the four infrared LED lamp tubes are evenly distributed around the lens 2 of the lens assembly, and the distance from the center of the lens is less than or equal to 3cm. The angle between the line connected to the center of the le...

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Abstract

The invention discloses a gesture recognition system based on an infrared image. The system comprises an infrared illumination module, a front end image processing module and a digital image gesture segmentation and tracking module. An infrared video acquisition unit comprises a CMOS optical sensing chip and a lens assembly. The front end image processing module comprises the infrared video acquisition unit and a FPGA control and output unit. The FPGA control and output unit comprises an image quality assessment module, a reference voltage adjustment module and an output module. The image quality assessment module is used to determine whether a hand area and a hand surrounding area present a same or similar pixel value in a digital image. If the hand area and the hand surrounding area present the same or similar pixel value in the digital image, a reference voltage of the CMOS optical sensing chip is adjusted. If the hand area and the hand surrounding area do not present the same or similar pixel value in the digital image, the digital image is directly output. The invention also discloses a gesture recognition method of the system. In the prior art, under low illumination level or variable illumination environment, recognition is unstable. By using the system and the method of the invention, the above problem can be solved, the quality of infrared digital video data and stability of the system can be increased.

Description

technical field [0001] The invention relates to a gesture recognition system and method, in particular to a gesture recognition system and method based on infrared images. Background technique [0002] With the rapid development of human-computer interaction technology, various new human-computer interaction methods are emerging. As one of the branches, the human-computer interaction method based on gesture recognition has become increasingly important with the proposal and improvement of various new algorithms. , and will enter thousands of households in the near future, becoming the main way of human-computer interaction in the family. [0003] However, human-computer interaction methods based on digital image processing such as gesture recognition have always faced a difficult problem, that is, the impact of various lighting environments in the camera scene on the quality of digital images, including the presentation of image details in low-light conditions , the interfe...

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Application Information

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IPC IPC(8): G06K9/00G03B15/05
Inventor 徐向民苗捷翁俊武崔东顺
Owner SOUTH CHINA UNIV OF TECH
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