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eastmountyxz · web-flow · commit 6497c9d62af2 · 2019-10-17T21:49:34.000+08:00
diff --git a/blog06-resize/blog06-image02.py b/blog06-resize/blog06-image02.py
@@ -0,0 +1,19 @@
+#encoding:utf-8
+import cv2  
+import numpy as np  
+ 
+#读取图片
+src = cv2.imread('scenery.png')
+rows, cols = src.shape[:2]
+print rows, cols
+
+#图像缩放 dsize(列,行)
+result = cv2.resize(src, (int(cols*0.6), int(rows*1.2)))
+
+#显示图像
+cv2.imshow("src", src)
+cv2.imshow("result", result)
+
+#等待显示
+cv2.waitKey(0)
+cv2.destroyAllWindows()
diff --git a/blog06-resize/blog06-image03.py b/blog06-resize/blog06-image03.py
@@ -0,0 +1,19 @@
+#encoding:utf-8
+import cv2  
+import numpy as np  
+ 
+#读取图片
+src = cv2.imread('scenery.png')
+rows, cols = src.shape[:2]
+print rows, cols
+
+#图像缩放
+result = cv2.resize(src, None, fx=0.3, fy=0.3)
+
+#显示图像
+cv2.imshow("src", src)
+cv2.imshow("result", result)
+
+#等待显示
+cv2.waitKey(0)
+cv2.destroyAllWindows()
diff --git a/blog06-resize/blog06-image04.py b/blog06-resize/blog06-image04.py
@@ -0,0 +1,23 @@
+#encoding:utf-8
+import cv2  
+import numpy as np  
+ 
+#读取图片
+src = cv2.imread('scenery.png')
+
+#原图的高、宽 以及通道数
+rows, cols, channel = src.shape
+
+#绕图像的中心旋转
+#参数：旋转中心 旋转度数 scale
+M = cv2.getRotationMatrix2D((cols/2, rows/2), 30, 1)
+#参数：原始图像 旋转参数 元素图像宽高
+rotated = cv2.warpAffine(src, M, (cols, rows))
+
+#显示图像
+cv2.imshow("src", src)
+cv2.imshow("rotated", rotated)
+
+#等待显示
+cv2.waitKey(0)
+cv2.destroyAllWindows()
diff --git a/blog06-resize/blog06-image05.py b/blog06-resize/blog06-image05.py
@@ -0,0 +1,23 @@
+#encoding:utf-8
+import cv2  
+import numpy as np
+import matplotlib.pyplot as plt
+ 
+#读取图片
+img = cv2.imread('scenery.png')
+src = cv2.cvtColor(img,cv2.COLOR_BGR2RGB)
+
+#图像翻转
+#0以X轴为对称轴翻转 >0以Y轴为对称轴翻转 <0X轴Y轴翻转
+img1 = cv2.flip(src, 0)
+img2 = cv2.flip(src, 1)
+img3 = cv2.flip(src, -1)
+
+#显示图形
+titles = ['Source', 'Image1', 'Image2', 'Image3']  
+images = [src, img1, img2, img3]  
+for i in xrange(4):  
+   plt.subplot(2,2,i+1), plt.imshow(images[i], 'gray')  
+   plt.title(titles[i])  
+   plt.xticks([]),plt.yticks([])  
+plt.show()  
diff --git a/blog06-resize/blog06-image06.py b/blog06-resize/blog06-image06.py
@@ -0,0 +1,30 @@
+#encoding:utf-8
+import cv2  
+import numpy as np
+import matplotlib.pyplot as plt
+ 
+#读取图片
+img = cv2.imread('scenery.png')
+image = cv2.cvtColor(img,cv2.COLOR_BGR2RGB)
+
+#图像平移 下、上、右、左平移
+M = np.float32([[1, 0, 0], [0, 1, 100]])
+img1 = cv2.warpAffine(image, M, (image.shape[1], image.shape[0]))
+
+M = np.float32([[1, 0, 0], [0, 1, -100]])
+img2 = cv2.warpAffine(image, M, (image.shape[1], image.shape[0]))
+
+M = np.float32([[1, 0, 100], [0, 1, 0]])
+img3 = cv2.warpAffine(image, M, (image.shape[1], image.shape[0]))
+
+M = np.float32([[1, 0, -100], [0, 1, 0]])
+img4 = cv2.warpAffine(image, M, (image.shape[1], image.shape[0]))
+
+#显示图形
+titles = [ 'Image1', 'Image2', 'Image3', 'Image4']  
+images = [img1, img2, img3, img4]  
+for i in xrange(4):  
+   plt.subplot(2,2,i+1), plt.imshow(images[i], 'gray')  
+   plt.title(titles[i])  
+   plt.xticks([]),plt.yticks([])  
+plt.show()  
diff --git a/blog06-resize/scenery.png b/blog06-resize/scenery.png
