I want to create a customizable quadrilateral shape crop window. A user can adjust this crop window to form a twisted quadrilateral to get perfect crop image. Also i want that if user drags center point of a line then the line can bend at that particular point from sides.I want this feature as i have to drag documents/bills from images.
The crop window can be of shape like given below. Here the blue dots are points which can dragged to make perfect crop window.
Use ScanbotSdk or GeniusScan, they are actually paid packages (can be used in demo version) but they are very good and efficient. Nextly, I would like to suggest edge detections or you can try scanny package, they are free but, as you can guess it, they are not much efficient or accurate while detecting the edges.
I hope you got what you were looking for
PS - ScanbotSdk or GeniusScan, I haven't tried them personally so they might include the feature of dragging and placing the corner points, like what you actually want.
