Image Transformation Custom Tool using OpenCV

Need to get a custom tool developed for image transformation. Two different image to be merged into a single image on click of a button. Image can be of different shape. Tool should be configurable, like co-ordinates of image should be taken as input, whether image multiplication and warp and overlay is required. Different color combination should be able to select. OpenCV Java image processing API can be used. So developer with front end experience and OpenCV image processing API based development is required. Can you please respond. Looking for a person preferably in Bangalore.