基于被动矩阵有机发光二极管屏的光学指纹采集系统
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TP391.41

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人工智能环境下机器视觉识别的研究与应用 西安市科技计划项目(201805036 YD14CG20)资助


Optical Fingerprint Acquisition System Based on Passive Matrix OLED Screen
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Research and application of machine vision recognition in artificial intelligence environment xi 'an science and technology program (201805036 YD14CG20) funded

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    摘要:

    目前智能门锁多采用光学指纹采集系统,针对它需要LED背光源,存在功耗大、发光不均匀、光学指纹模块过厚的缺点,设计了一种应用自发光Passive Matrix OLED屏代替LED的光学指纹采集系统,改善了以上问题。且针对该方法采集的原始图像存在屏幕发光像素干扰的问题,提出了平均值消除法对原始数据进行了降噪处理,大幅地减小了屏幕干扰的问题,之后进行了规格化、低通滤波、图像增强、二值化以及细化处理,实验仿真得到了清晰的指纹单像素图像,证明了Passive Matrix OLED屏幕采集指纹的可行性,为进一步应用打下了基础。

    Abstract:

    Currently, the optical fingerprint collection system is widely applied in intelligent door locks with the need of LED backlight which has several drawbacks such as large power consumption, uneven light emission, and thick optical fingerprint modules. To tackle these, an optical fingerprint collection system is designed in the paper with the application of a self- luminous Passive matrix OLED screen. Also, an average value elimination method is employed to reduce the noise of the original collected image and the screen interference is obviously reduced. Then these steps, normalization, low-pass filtering, image enhancement, binarization, and thinning, are executed sequentially to obtain a clear single-pixel image of the fingerprint. Experiments and simulations show that it is feasible for Passive matrix OLED screen to collect fingerprints, which provides a platform for the further applications.

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李思远,陈文燕,朱文龙. 基于被动矩阵有机发光二极管屏的光学指纹采集系统[J]. 科学技术与工程, 2021, 21(12): 5005-5010.
Li Siyuan, Chen Wenyan, Zhu Wenlong. Optical Fingerprint Acquisition System Based on Passive Matrix OLED Screen[J]. Science Technology and Engineering,2021,21(12):5005-5010.

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  • 收稿日期:2020-04-10
  • 最后修改日期:2020-10-13
  • 录用日期:2020-07-04
  • 在线发布日期: 2021-05-17
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