Abstract
Color transfer is an image editing process that naturally transfers the color theme of a source image to a target image. In this paper, we propose a 3D color homography model which approximates photo-realistic color transfer algorithm as a combination of a 3D perspective transform and a mean intensity mapping. A key advantage of our approach is that the re-coded color transfer algorithm is simple and accurate. Our evaluation demonstrates that our 3D color homography model delivers leading color transfer re-coding performance. In addition, we also show that our 3D color homography model can be applied to color transfer artifact fixing, complex color transfer acceleration, and color-robust image stitching.
Highlights
Color palette modification for pictures/frames is often required in professional photograph editing as well as the video postproduction
We propose a simple and general model for re-coding an unknown photo-realistic color transfer which provides leading accuracy and the color transfer algorithm can be decomposed into meaningful parts
We assume that we have an input image and an output produced by a color transfer algorithm
Summary
Color palette modification for pictures/frames is often required in professional photograph editing as well as the video postproduction. This color transfer process is a complex task that requires artists to carefully adjust for multiple properties such as exposure, brightness, white point, and color mapping. 2.1 Photo-realistic color transfer transfer method that distorts the color distribution by random 3D rotation and per-channel histogram matching until the distributions of the two images are fully aligned. A luminance alignment is later performed by histogram matching along the “gray” axis of RGB They adopt a 3D convex hull mapping to limit the color-transferred RGBs to the gamut of the target RGBs. Other approaches (e.g., [1,25,28]) solve for several local color transfers rather than a single global color transfer. As most non-global color transfer methods are essentially a blend of several single color transfer steps, a global color transfer method is extendable for multi-transfer algorithms
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