非接触式掌纹图像采集光源的设计  

Design of light source structure for non-contract palmprint images acquisition

作　　者：苑玮琦[1] 孙洪[1] 

机构地区：[1]沈阳工业大学视觉检测技术研究所,沈阳110870

出　　处：《计算机应用研究》2011年第5期1965-1967,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(60972123);国家教育部高校博士点专用基金资助项目(2092102110002);沈阳市科技计划资助项目(F10-213-1-00)

摘　　要：为了获得非接触式掌纹图像更为准确的主线纹理特征,提出一种新的非接触式掌纹图像采集光源。分别通过人体皮肤和血液对光谱的吸收和共振散射的研究,进行波段选择;通过对发光二极管(LED)的光电特性,及多个LED间距与排列方式的研究,最终得到光照度均匀的光源。结果表明,相比LED布局相同、光波波段不同的光源,及相同波段LED、布局不同的光源,在提出的光源下采集到的手掌图像对比度最高,主线特征更为突出。Aiming to extract the veracity of the palmprint major line features under the non-contracting acquisition condition,this paper proposed a new palmprint images acquisition lighting source structure.It chose wavelength after the research of the spectrum absorbing and resonance scattering in the skin and blood.Designed one even lighting source by the research of the LED characteristics and the LED＇s distance proper arrangement.Comparing the lighting source of the same LED layout but the different wavelength with the one of the same wavelength but the different LED layout,the contrast of the palm image captured is the highest and the main line feature of the image is more prominent based on this optical source proposed.

关 键 词：非接触 掌纹采集 发光二极管 主线特征 高斯拟合 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]