Morphological image compositing

Image Compositing Fundamentals Technical

This is a short introduction to the efficient calculation of image compositions. Some of the techniques shown here are not well known, and should be. In particular, we will explain the difference between premultiplied alpha and not1. These two related notions are often confused, or not even understood. We shall show that premultiplied alpha is more efficient, yields more elegant formulas, and o...

Edge-constrained image compositing

The classic task of image compositing is complicated by the fact that the source and target images need to be carefully aligned and adjusted. Otherwise, it is not possible to achieve convincing results. Visual artifacts are caused by image intensity mismatch, image distortion or structure misalignment even if the images have been globally aligned. In this paper we extend classic Poisson blendin...

Structure-Aware Image Compositing

Object-aware Gradient-Domain Image Compositing

We describe an approach to suppress bleeding artifacts without altering the boundary location in gradient-domain compositing, a technique to create seamless composites. While gradient-domain compositing has become a standard tool for many complex image editing tasks such as seamless cloning, panorama stitching or scene completion, its quality suffers from mismatches in the composited image regi...

Perception of Lighting Errors in Image Compositing

Image compositing is a standard computer graphics technique used to merge independently created visual elements into a single image. However, errors in the source material or the compositing process can destroy the realism of the result. In this paper we describe a series of experiments that investigate the role that lighting errors in the source material have on the realism of composite images...