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Author: yashk2000

opencv_tutorial_01.py

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+import imutils
+import cv2
+
+image = cv2.imread("jp.png")
+(h, w, d) = image.shape
+print("width={}, height={}, depth={}".format(w, h, d))
+
+(B, G, R) = image[100, 50]
+print("R={}, G={}, B={}".format(R, G, B))
+
+roi = image[60:160, 320:420]
+cv2.imshow("ROI", roi)
+
+resized = cv2.resize(image, (200, 200))
+cv2.imshow("Fixed Resizing", resized)
+
+r = 300 / w
+dim = (300, int(h*r))
+resizedAspectRatio = cv2.resize(image, dim)
+cv2.imshow("Aspect Ratio Resize", resizedAspectRatio)
+
+resizeAuto = imutils.resize(image, width=300)
+cv2.imshow("Auto Resize", resizeAuto)
+
+center = (w // 2, h // 2)
+M = cv2.getRotationMatrix2D(center, -45, 1.0)
+rotated = cv2.warpAffine(image, M, (w, h))
+cv2.imshow("OpenCV Rotation", rotated)
+
+autoRotated = imutils.rotate(image, -45)
+cv2.imshow("Imutils Rotation", autoRotated)
+
+rotateWithOutCrop = imutils.rotate_bound(image, 45)
+cv2.imshow("Rotate with out cropping", rotateWithOutCrop)
+
+blurred = cv2.GaussianBlur(image, (11, 11), 0)
+cv2.imshow("Blurred", blurred)
+
+output = image.copy()
+cv2.rectangle(output, (320, 60), (420, 160), (0, 0, 255), 2)
+cv2.imshow("Rectangle", output)
+
+outputCircle = image.copy()
+cv2.circle(outputCircle, (300, 150), 20, (255, 0, 0), -1)
+cv2.imshow("Circle", outputCircle)
+
+outputLine = image.copy()
+cv2.line(outputLine, (60, 20), (400, 200), (0, 0, 255), 5)
+cv2.imshow("Line", outputLine)
+
+outputText = image.copy()
+cv2.putText(outputText, "OpenCV + Jurassic Park!!!", (10, 25), 
+	cv2.FONT_HERSHEY_SIMPLEX, 0.7, (0, 255, 0), 2)
+cv2.imshow("Text", outputText)
+
+cv2.imshow("Image", image)
+cv2.waitKey(0)