人体手掌静脉图像采集系统研究

摘要

The paper studies the palm vein image acquisition device. Analyzing the principle of the acquisition device, it was designed a dual circle near infrared light source structure which has uniform light intensity distribution. And it is proposed a vein image quality assessment method based on Gray Level Co-occurrence Matrix and fuzzy logic. The relationship between the contrast, entropy, correlation and vein texture information is also investigated. The established fuzzy inference system can make optimal evaluation for image quality, thus validates the performance of the acquisition system. The acquisition device is small in size and low in cost. The vein images gotten by the device meet the requirement of subsequent processing of vein recognition system.%以手掌静脉图像采集装置为研究对象,详细分析了采集装置的设计原理,设计了一种光强分布均匀的双环形近红外光源结构,并提出了一种基于灰度共生矩阵及模糊逻辑的手掌静脉图像质量评价方法.通过研究对比度、熵、相关性的值与静脉纹理结构信息的关系,建立模糊推理系统对图像质量做出了最佳判别,从而验证了采集系统的性能.设计的采集装置结构小、成本低,采集到的静脉图像比较清晰,满足静脉识别系统后续处理的需要.