摘要
设计并实现了一种以TMS320DM6437DSP和视频解码芯片TVP5146为核心的掌脉图像采集系统。系统使用850nm和960nm双波长近红外光源,在光照强度恒定的条件下,通过重复设置TVP5146的光亮度和亮度对比度等寄存器,利用手形图像可以间接地精确定位出掌脉图像的有效区域。该系统可以脱离通用计算机的束缚方便地应用于现场。
In this paper, a palm-vein image capture system which centers on TMS320DM6437 DSP and digital video decoder TVP5146 is designed.850nm and 960 nm double near infrared light sources are used in the system..Without changing light intensi- ty, by using hand-geometry image, the effective region of palm-vein image can be located indirectly and accurately by double setting TVP5146 luminance brightness register and luminance contrast register. The system can be applied to the scene without the shackles of general-purpose computers.
出处
《电子技术应用》
北大核心
2010年第3期24-26,30,共4页
Application of Electronic Technique
基金
国家自然科学基金项目(No.60972123)
