A high-density ternary barcode detection system employing an envelope-differential composite method
A high-density ternary barcode detection system employing an envelope-differential composite method
复制标题
一种采用包络差分复合法的高密度三元条码检测系统
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
H. Wakaumi
中科院分区：
文献类型：
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作者：
H. Wakaumi
为了提高检测分辨率和检测范围，研制了一种采用包络差分复合方法的三值条码检测系统。该系统通过从原始信号中减去检测到的条形码信号的衰减和略微包络的线而适用于任何三元条形码图案，使得能够以更高的扫描速度对高密度条形码进行更远距离的检测，从而允许获得大量信息。原型系统使用最小宽度为0.3 mm的四字符三元条形码，每个字符由九个元素组成，被证实成功地在超过5 cm的范围内以351扫描/秒的最大扫描速度进行检测，这是使用传统CCD相机扫描速度的7倍。该方法的检测范围是传统双阈值方法的4.5倍。预计该系统将能够实时识别生产线和自动化仓库中的货物，并在其他应用中得到广泛应用。
A ternary barcode detection system employing an envelope differential composite method was developed to increase both detection resolution and range. This system, adaptable to any ternary barcode pattern through the subtraction of an attenuated and slightly enveloped line of the detected barcode signal from the original signal, enables longer range detection of high-density barcodes at higher scanning speeds and so allowing a large amount of information to be obtained. The prototype system, using a four-character ternary barcode with a minimum width of 0.3 mm consisting of nine elements per character, was confirmed to successfully detect over a range of more than 5 cm at a maximum scanning speed of 351 scan/sec, which is 7 times the scanning speed using conventional CCD cameras. This detection range is 4.5 times longer than that using the conventional dual threshold method. This system is expected to enable the real-time identification of goods on production lines and in automated warehouses and to be used extensively in other applications.