In digital image editing software, layers organize images. However, layers are often not explicitly represented in the final image, and may never have existed for a scanned physical painting or a photograph. We propose a technique to decompose an image into layers. In our decomposition, each layer represents a single-color coat of paint applied with varying… (More)
The creation of a painting, in the physical world or digitally, is a process that occurs over time. Later strokes cover earlier strokes, and strokes painted at a similar time are likely to be part of the same object. In the final painting, this temporal history is lost, and a static arrangement of color is all that remains. The rich literature for… (More)
Publications Lien's advisees indicated by: graduate (‡), undergraduates (†) students and interns () Special edition of [P65] featuring selected papers. Listed by CAGD as one of the most cited paper since 2007.
My research interests are image & video processing, computer graphics, and computer vision. Currently, I am focusing on decomposing images or time-lapse painting videos into translucent layers, to make image reediting much easier. More generally, I am interested in the application of geometry of color spaces and image edits. Given an image, either… (More)
1 2 3 4 5 composite RGB space original recoloring Figure 1: Given a digital painting, we analyze the geometry of its pixels in RGB-space, resulting in a translucent layer decomposition, which makes difficult edits simple to perform. Artwork c Adelle Chudleigh. Abstract In digital painting software, layers organize paintings. However, layers are not… (More)