Image Rotation is deployed by using cv2.rotate() method. It can be used to rotate the image by the given angle and clockwise or anticlockwise manner,depending upon our need.
Image Scaling is deployed using cv2.resize() method. It can be used to scale up or scale down a given image in x or y axis, depending upon our need.
For this, first the width and height of the output image is calculated ,based upon the amount of zoooming required to be applied. Then ,cv2.resize() method is deployed to finally zooom the given image.
This function Resize the images.
Translation refers to the rectilinear shift of an object i.e. an image from one location to another. cv2.wrapAffine() function has been used here,to implement the translation.
Bi-linear interpolation means applying a linear interpolation in two directions. Thus, it uses 4 nearest neighbors, takes their weighted average to produce the output.
In this we use cv2.INTER_LINEAR interpolation method to resize the image.