本研究利用希望透過商業用(波長範圍400-1000 nm),波長間隔1nm)、本實驗室自行開發的超分光光譜影像系統(波長範圍400~1100 nm,波長間隔0.3 nm),進行比較,奠定未來超分光影像系統在線上作業使用。 本研究雞隻屠體樣本分析為140隻,合格為70隻、不合格70隻,希望透過不同儀器間檢測出的光譜進行比較,並透過主軸成份分析的權重值找出主要波長,腹部為442.4、580、582、800.3 nm,背部為441.8、480、580、917.6 nm,所得到主要波長範圍大多位於400-700nm,為可見光範圍。 另外,將光譜進行平滑化、移位化、正規化減少雜訊、干擾之後,不合格在500-600 nm之間的波峰有明顯的區分。本研究所進行的光譜檢測著重於皮膚判別,因此利用主要波長更進一歩地分析不同病灶與主要波長的相關性。 將合格、不合格的雞隻屠體腹部、背部各別進行主軸成份的分數值(Score)中的Score2、Score4、Score6、Score8、Score10進行誤判,所得到的準確率為90%。並將Score2、Score6、Score10進行訓練組(Training)、測試組(Testing)所得準確率為90%。
In this study, the visible/near infrared spectroscopy detection technique is nondestructive development of fairly mature detection technology, and the wavelength range of 400-1000 nm and interval of 1 nm. The laboratory had developed hyperspectral imaging system with wavelength range 400-1000 nm and interval of 0.3 nm . The research purpose of a comparison was made between visible/near infrared and hyperspectral imaging system.In the future, the chicken carcasses samples spectral method for automated on-line inspection . It had been used as a research to identify key wavelengths for detected 70 wholesome chicken carcasses and 70 unwholesome chicken carcasses ,and classified analysis for wholesome and unwholesome chicken samples .To used principal component analysis (PCA) and classified to wholesome, unwholesome were differentiated from each other with high accuracy. key wavelengths were identified intensity of abdomen loading weights at 442.4、580、582、800.3 nm for PC1and PC2.And key wavelengths were identified intensity of back loading weights at 441.8、480、580、917.6 nm PC1and PC2, in conclusion were wavelengths at visible wavelength region. Three pre-processing steps include smoothing, offset, normalization methods and the results to showed obvious difference in classification accuracy spectroscopy. In general, the classification accuracy was improved by increased the number of scores of input data, including score 2, score 4, score 6, score 8, score 10 to achieved 90%. The training achieved 90% classified wholesome and unwholesome. The testing achieved 90% classified wholesome and unwholesome 90%.