| 英文摘要 | Public security, information security and people security demand new person identification with high reliability. Compared to traditional identity authentication technologies, such as RFID card, password and signature which easily be copied, decode, face biometric is difficult to forge, can not be lost, and is nonintrusive and easy to us. Face recognition in verification system, immigration clearance at customs, access control in important area and other aspects has huge application prospect. Recently, face recognition system is usually implemented on PC platform. Embedded system is a good solution, and usually in different kinds of environments. In this thesis, research is conducted to port face recognition algorithm to TI dual-core heterogeneous processor TMS320DM6446 and to implement the application software running on an embedded linux system. The main contributions as follows: 1) A deep research on the principle of Codec Engine of the TI dual-core heterogeneous software foundation, and probes data interactive mode between the ARM and DSP of the TMS320DM6446 on-chip system. The study of XDM algorithm realization method on DSP, and transplant near infrared face recognition, motion detection and JPEG encoded algorithms; 2) Learn the Embedded Linux operating system. Build the development of the embedded system environment, including cross-compilation, network tools, such as TFTP, NFS, uImage Boot-loader and other system software. To transplant VSFTP and HTTP web server to embedded linux platform. Design and make the I2C keyboard and the remote control driver based on serial driver; 3) A deep research on DaVinci technology and working principle of the OSD display module. Using DirectFB + LiTE realize the GUI of application software, and study V4L2 acquisition module, realize double road video acquisition module of near infrared and visible, using gettext realize internationalization. Finally, the application software is optimized. This system successfully applies to the third security area 2010 Shanghai world expo, and gets widely praise. Through the project implementation, this system shows a higher ease-of-use, last but not the least, it laid a solid foundation for the subsequent development of Omap3530. |
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