Скачать или смотреть How To Display Rotate Crop Image In Python Project|ratan agarwal it informer

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How To Display Rotate Crop Image In Python Project

Project Prerequisites
1.you can install cv2 , numpy module
2.Some jpg pictures to manipulate
3. Methods
1.Display image
Imread() – read image
Type (image) – show type
Imshow() –show image
Waitkey() -to halt execution
2. Rotate Image
Read image
Image.shape[0:2]- return the height and width of image matrix
rotationMatrix =cv2.getRotationMatrix2D(center, angle, scale)
center- Center point of rotation
angle – Angle in degree
scale - The scale property which makes the image fit on the screen
The next step is to rotate our image with the help of the rotation matrix.
rotatedImage = cv2.warpAffine(img, rotationMatrix, (width, height))
Then we show rotated image.
3.Crop image
Read image
Get height and width of image
find start row and colume and end row and colume by %
startRow = int(height*.15)
startCol = int(width*.10)
endRow = int(height*.90)
endCol = int(width*.90)
Now map the image
croppedImage = img[startRow:endRow, startCol:endCol]
show image

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