tips/tricks in deep neural network
1、數據集的擴增 現在數據集擴增成爲訓練深度網絡的必須步驟 1.1 水平翻轉，隨機剪裁，顏色抖動（color jittering）（HSV空間中，改變s和v分量） 1.2 fancy pca step1: 計算rgb三個分量的協方差（注意轉爲一維） im = cv.imread('1_1.png')#讀入圖片數據 b,g,r = cv.split(im)#分離通道 b_f = b.flat
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