摘要
设计了一种能够融合掌形、掌纹和掌静脉三模态特征的嵌入式图像采集装置,主要包括多光谱光源子系统、CMOS图像传感器、高频数字信号处理器、液晶显示模块、语音提示模块等。为保证系统的实时性,利用Video Port接口实现图像数据的自动采集,减少CPU负担,使其能够专注于对数据处理识别工作。为提高获取的各模态图像质量,着重对光源子系统进行了研究,设计了光照度均匀、可编程控制的多光谱光源。结果表明:设计的手掌三模态采集系统能够实现实时采集满足识别要求的掌形、掌纹和掌静脉图像。
This paper designed an embedded hand three-modal image acquisition system. Combined with DSP digital process- ing system, it can integrate the three trimodal characteristics of palm-shaped, palmprint and palm vein. It mainly constituted a multi- spectral light source subsystem, CMOS image sensor, a high-frequency digital signal processor, and LCD display. In order to ensure the systems real-time performance and efficiency,Video Port interface achieved the automatic acquisition of image data, and re- duced the burden on the CPU, which can enable to focus on the identification of data processing work. In order to improve the ac- quired modal image quality, this paper also focused on light source subsystem spectrally selection, uniform analysis and logic control research, and designed an uniform illumination, programmable multi-spectral light source. The results indicate, the palm three modal acquisition system ean achieve real-time collection and meet the identification requirements of the palm - shaped, palmprint and palm vein images, and lay a good foundation for the next step in the data processing and recognition.
出处
《仪表技术与传感器》
CSCD
北大核心
2013年第10期35-38,41,共5页
Instrument Technique and Sensor
基金
国家自然科学基金项目(60972123)
国家教育部高校博士点专用基金资助项目(2092102110002)
沈阳市科技计划项目(F12-277-1-10)
