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Embedded human face automatic detection equipment based on DSP and its method

An automatic detection device, face detection technology, applied in program control devices, character and pattern recognition, instruments, etc., to achieve the effects of easy maintenance, low production and use costs, and high detection accuracy

Inactive Publication Date: 2003-07-09
SHANGHAI ISVISION INTELLIGENT RECOGNITION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art "A Fingerprint Automatic Identification System Based on DSP Chips" was published on page 39 of the 6th issue of "Modern Scientific Instruments" in 1999, and the prior art "Fingerprint Identification System Realized with DSP Chips" was published in "Computer Engineering "Journal published in September 1996, volume 22, issue 5, page 41, used DSP chips, but for fingerprint recognition technology
Face recognition technology using DSP chips has not been reported

Method used

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  • Embedded human face automatic detection equipment based on DSP and its method
  • Embedded human face automatic detection equipment based on DSP and its method
  • Embedded human face automatic detection equipment based on DSP and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: see Figure 4 , the embedded face automatic detection device based on DSP is characterized in that, comprises: the external high-speed program memory (5), video camera (1), DSP digital signal processor (2) that can solidify the face detection program in it , image sampling logic module (3), multiple external high-speed static data memory (4), high-speed serial input / output module (6), control / decoding module (7), power supply module (8); wherein camera (1 )

[0026] connected with the image sampling logic module (3) through a control line, the image sampling logic module (3), the control / decoding module (7), the DSP digital signal processor (2), the high-speed serial input / output module (6), A plurality of external high-speed static data memories (4) and external high-speed program memories (5) are connected to each other through a control bus, a data bus and an address bus, and a power supply module (8) is connected to each part.

[0027] DSP digital signa...

Embodiment 2

[0033] Example 2: see Figure 5 , is basically the same as Embodiment 1, and the difference is that the A / D converter (9) is used instead of the video camera (1), and the video signal is input, converted into a digital signal, and transmitted to the sampling logic circuit; Serial output / input module (6): the asynchronous communication chip TL16C550B is extended to realize the high-speed serial communication of the system; the digital signal processor (DSP) (2) adopts the high-speed and high-performance TMS3206203 series digital signal processor of American TI Company as the core device.

Embodiment 3

[0034] Embodiment 3: the embedded face automatic detection device based on DSP, it is characterized in that, the face detection program has also used multi-block RAM and ROM according to actual needs except the on-chip RAM and ROM of the DSP digital signal processor (2) chip. External high-speed static data memory (4), in the external high-speed static data memory (4), the face detection program is provided with a global variable storage area, a public data exchange area and a temporary local variable storage area-heap, stack.

[0035] The high-speed serial output / input module (7) adopts two hardware interfaces of RS-232 or RS-485, and is a communication interface with the upper computer. All the other are identical with embodiment 1.

[0036] The user can perform state detection, function setting, and send face image data acquisition requests to the embedded system dedicated to face detection through the host computer. The embedded system dedicated to face detection can recei...

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PUM

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Abstract

The present invention relates to an embedded human face automatic detection equipment based on DSP by using video flow and its method. Said equipment mainly is formed from human face detection software, camera or A / D converter, DSP digital signal processor chip, image sampling logic module, external high-speed static data memory, external high-speed program memory, high-speed serial input / output module, control / decoding module and power supply module. Said system can automatically detector out standardized human face from complex scene for implementing various identity identification and identification operation. It has extensive application, for example, controlling exit and entrance, and for various TV monitoring and alarm systems.

Description

[0001] Technical field: the present invention relates to a kind of special-purpose embedded system that automatically carries out face detection (Face Detect) from video flow. technical background: [0002] Face automatic detection technology is one of the latest developments in biometrics. Although there are many institutions or individuals engaged in research in this area at home and abroad, there are few existing products according to the public literature. . Before the present invention proposes, existing human face automatic detection product all realizes based on general software and hardware platforms such as PC+Windows9x / 2000 / NT (or Unix, Linux). This type of product has disadvantages such as high cost, low stability, and difficult maintenance, making it difficult to carry out practical promotion. [0003] Take the Type IV access control product produced by Chengdu Yinchen Wangxun Technology Co., Ltd. as an example. This product integrates face recognition technology ...

Claims

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Application Information

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IPC IPC(8): G06F9/44G06K9/00
Inventor 张青
Owner SHANGHAI ISVISION INTELLIGENT RECOGNITION TECH
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