Optimization‐Based Gradient Mesh Colour Transfer. (19th January 2015)

• Record Type: Journal Article
• Authors: Xiao, Yi; Wan, Liang; Leung, Chi Sing; Lai, Yu‐Kun; Wong, Tien‐Tsin
• Is Part Of: Computer graphics forum. Volume 34:Number 6(2015)
• Page Start: 123
• Page End: 134
• Publication Date: 2015-01-19
• Subjects: Computer graphics -- Periodicals; 006.605
• DOI: 10.1111/cgf.12524
• Languages: English
• ISSNs: 0167-7055

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="cgf12524-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>In vector graphics, gradient meshes represent an image object by one or more regularly connected grids. Every grid point has attributes as the position, colour and gradients of these quantities specified. Editing the attributes of an existing gradient mesh (such as the colour gradients) is not only non‐intuitive but also time‐consuming. To facilitate user‐friendly colour editing, we develop an optimization‐based colour transfer method for gradient meshes. The key idea is built on the fact that we can approximate a colour transfer operation on gradient meshes with a linear transfer function. In this paper, we formulate the approximation as an optimization problem, which aims to minimize the colour distribution of the example image and the transferred gradient mesh. By adding proper constraints, i.e. image gradients, to the optimization problem, the details of the gradient meshes can be better preserved. <graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgj2sfm4r0s" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></p> </abstract>