Hyperspectral imaging for detecting fecal and ingesta contaminants on poultry carcasses
Hyperspectral imaging for detecting fecal and ingesta contaminants on poultry carcasses
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DOI：
10.13031/2013.11413
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发表时间：
2002-11-01
期刊：
影响因子：
--
通讯作者：
Buhr, RJ
中科院分区：
文献类型：
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作者：
Park, B;Lawrence, KC;Buhr, RJ
研制了一套高光谱成像系统，包括带棱镜-光栅-棱镜光谱仪的相机、光纤线照明、电动镜头控制和高光谱图像处理软件，用于家禽安全检查，特别是家禽尸体粪便和食入污染的识别。从粪便和食入污染的家禽尸体中获得了400 ~ 900 nm 512个光谱波段的光谱和空间图像数据。利用主成分分析方法从可见光/近红外光谱中选择434、517、565和628 nm四个优势波长，用于高光谱图像的波长选择。利用校准光源（HgAr、Kr和激光）开发了高光谱成像系统的校准模型，用于从高光谱图像中精确选择波段，以识别粪便和摄入污染物的空间和光谱特征。高光谱图像处理算法，特别是双波长（5651517）图像的频带比和直方图拉伸，可以有效地识别家禽尸体的粪便和食入污染。测试结果表明，线性直方图拉伸的检测准确率为97.3%，非线性直方图拉伸的检测准确率为100%。本文介绍了高光谱成像技术可有效检测家禽尸体上的粪便（来自十二指肠、盲肠和结肠）和食入物的研究结果，并展示了高光谱成像技术在家禽在线安全检测中的潜在应用。
A hyperspectral imaging system including a camera with prism-grating-prism spectrograph, fiber optic line lighting, motorized lens control, and hyperspectral image-processing software was developed for poultry safety inspection, particularly identification of fecal and ingesta contamination on poultry carcasses. Both spectral and spatial image data between 400 and 900 nm with 512 spectral bands were acquired from fecal and ingesta contaminated poultry carcasses. Four dominant wavelengths (434, 517, 565, and 628 nm) were selected by principal component analysis from visible/near-infrared spectroscopy for wavelength selection of hyperspectral images. A calibration model for the hyperspectral imaging system was developed from calibration lighting sources (HgAr, Kr, and lasers) for accurate band selection from the hyperspectral images to identify spatial and spectral characterization of fecal and ingesta contaminants. Hyperspectral image processing algorithms, specifically band ratio of dual-wavelength (5651517) images and histogram stretching, were effective in the identification of fecal and ingesta contamination of poultry carcasses. Test results indicated that the detection accuracy was 97.3% for linear and 100% for non-linear histogram stretching. This article presents the research results that hyperspectral imaging can be used effectively for detecting feces (from the duodenum, ceca, and colon) and ingesta on poultry carcasses and demonstrates the potential application for on-line safety inspection of poultry.