Angular perspective image cropping

Write an Angular 8 component that accepts image/images base64 and detects book/page borders and gives the user ability to change the coordinates and apply changes. And add a property to use the same coordinates with the following images. Perspective crop: We would like to build a feature that allows the user to apply the perspective crop on the document. This could be on the fly while the user is taking a picture or can be applied on a batch of images already available. Perspective crop includes cropping and de-skewing the image to make it appear as a rectangle. Additionally, the borders of the background of the image are, most of the time, not a single color which makes it hard to apply the crop. The user will select an area where the document will be. Then, the system will always crop the image inside this selected area then it will search for the document inside it and apply the perspective crop.