ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Potato is an indispensable food crop for the people in the world. As a kind of light injury on the surface of potato,，slight bruise of potato cannot be accurately tested when potato placed in random orientation. This paper proposed a method by combining hyperspectral image based on Vshaped plane mirror with fruit fly optimization algorithm (FOA) to identify slight bruise of potato randomly placed. In this study, hyperspectral imaging system was built based on Vshaped plane mirror and 322 potato samples were bought as the research subjects. To meet with the practical production, within half an hour after bruise occurred, potatoes were placed in three positions: the damage part facing to camera, side to camera, and back to camera. Then hyperspectral images of all potatoes were collected including reflection image F1 in mirror 1, image F2 directly obtained by camera and reflection image F3 in mirror 2. Average spectrums from these three images were spliced into attribute matrix of sample. Support vector classifier(SVC) model was established in full bands after utilizing standard normal variate(SNV) and the recognition accuracy of prediction set was only 8411%. Variable selection was processed by ant colony optimization(ACO). Nine spectral variables (762nm, 879nm in F1; 711nm, 957nm, 1020nm in F2; 510nm, 746nm, 1.000nm, 1.007nm in F3 )were selected and the recognition rate reached 95.32%. FOA, genetic algorithm(GA) and grid search were respectively applied to search the best penalty parameter c and kernel function parameter g. By comparing results of those models, FOA obtained optimal parameters(c=11.0763,，g=9.2625). FOA-SVC was proved to be the best model and the training set and prediction set recognition accuracy both reached 100%. The results show that the combination of hyperspectral image based on Vshaped plane mirror with FOA-SVC could accurately detect the slight bruise of potato.