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中文摘要：
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。
英文摘要：
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.
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