Affine Transformation

影音說明(YouTube)

Linear transformations are fixed around the origin (scale, rotate, shear).

Affine transformations are a linear function followed by a translation.

AffineTransformation.ipynb(share)

OpenCV provides two transformation functions,

cv2.warpAffine and cv2.warpPerspective,

with which you can have all kinds of transformations.

cv2.warpAffine takes a 2x3 transformation matrix

while cv2.warpPerspective takes a 3x3 transformation matrix as input.

請先下載上任一圖，再上傳至colab 工作區(詳細步驟)

AffineTransformation2.ipynb(share)(CV2)

OpenCV-- Geometric Image Transformations documentation(link)

Image Transformations using OpenCV in Python(link)

cv2AffineImg.ipynb(share)

rotation.ipynb(share)