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Smart Imaging Using Laser Targeting: A Multiple Barcodes Application

机译：使用激光瞄准的智能成像：多种条形码应用

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摘要

To the best of our knowledge, proposed is a novel variable depth of field smart imager design using intelligent laser targeting for high productivity multiple barcodes reading applications. System smartness comes via the use of an Electronically Controlled Variable Focal-Length Lens (ECVFL) to provide an agile pixel (and/or pixel set) within the laser transmitter and optical imaging receiver. The ECVFL in the receiver gives a flexible depth of field that allows clear image capture over a range of barcode locations. Imaging of a 660 nm wavelength laser line illuminated 95-bit one dimensional barcode is experimentally demonstrated via the smart imager for barcode target distances ranging from 10 cm to 54 cm. The smart system captured barcode images are evaluated using a proposed barcode reading algorithm. Experimental results after computer-based post-processing show a nine-fold increase in barcode target distance variation range (i.e., range variation increased from 2.5 cm to 24.5 cm) when compared to a conventional fixed lens imager. Applications for the smart imager include industrial multiple product tracking, marking, and inspection systems.
机译：据我们所知，提出了一种新颖的可变景深智能成像器设计，该设计使用智能激光瞄准技术来实现高生产率的多个条形码读取应用。系统的灵巧性是通过使用电子控制可变焦距透镜（ECVFL）在激光发射器和光学成像接收器中提供灵活的像素（和/或像素集）来实现的。接收器中的ECVFL具有灵活的景深，可以在一定范围的条形码位置上捕获清晰的图像。通过智能成像仪，实验证明了660 nm波长激光线照射的95位一维条形码的成像效果，条形码目标距离范围为10 cm至54 cm。使用建议的条形码读取算法评估智能系统捕获的条形码图像。与常规的固定镜头成像仪相比，基于计算机的后处理后的实验结果显示，条形码目标距离变化范围增加了9倍（即，范围变化从2.5厘米增加到24.5厘米）。智能成像仪的应用包括工业多产品跟踪，标记和检查系统。

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