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肉中異物X射線檢測的肉厚度激光雙三角測量方法
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江蘇省科技支撐計(jì)劃資助項(xiàng)目(BE2011396)和高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目(20103204110006)


Research on Meat Thickness Measurement Based on Laser Double-triangulation Method
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    摘要:

    針對不規(guī)則形狀肉X射線系統(tǒng)成像受肉厚度影響產(chǎn)生灰度偏差的問題,提出一種激光三角法測量肉的厚度以補(bǔ)償X射線圖像灰度偏差的方法,建立了激光測量肉厚度模型及一種基于對稱式結(jié)構(gòu)的激光雙三角法肉厚度測量系統(tǒng)。通過標(biāo)定將左右CCD相機(jī)采集的兩幅激光圖像統(tǒng)一到同一個(gè)坐標(biāo)下,采用基于灰度的圖像拼合法將兩幅肉激光圖像拼合為一個(gè)完整的肉激光圖像。三維掃描試驗(yàn)表明,肉圖像外部形狀基本對應(yīng),灰度變化相似,肉圖像厚度變化與肉厚度輪廓接近。

    Abstract:

    ood foreign bodies harm the human health and hold back the food industry development. To detect food by computer vision and image processing technology, the examination has the advantages of non destruction, high speed, accuracy and reliable etc. The meat thickness on-line real-time detection system was first designed and constructed, which collected X-ray image of meat and laser image of meat, including filtering, enhancement and other image preprocessing. The X-ray image system of irregular meat was affected by the gray deviations of uneven thickness of meat. A meat thickness measurement method by laser triangular was proposed to eliminate the gray deviations of the X-ray image of the uneven thickness meat. This study established the mathematical model for the thickness of irregular meat, and a thickness measurement system by symmetrical structure of the laser double-triangulation method. Through calibration method two laser image collected by CCD camera were unified by means of the same coordinates. The meat images were synthesized using the image integration methods based on both gray scale method. The three-dimensional scanning experimental result show that the external shape of meat with corresponding profile, gray variation, and the variational thickness of meat image are close to meat thickness.

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洪 冠,趙茂程,汪希偉,商慶清,居榮華,吳志威.肉中異物X射線檢測的肉厚度激光雙三角測量方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(9):223-229. Hong Guan, Zhao Maocheng, Wang Xiwei, Shang Qingqing, Ju Ronghua, Wu Zhiwei. Research on Meat Thickness Measurement Based on Laser Double-triangulation Method[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(9):223-229.

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  • 收稿日期:2013-08-27
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  • 在線發(fā)布日期: 2014-09-10
  • 出版日期: 2014-09-10