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Interactive Weathering of Depth-Inferred Videos
BibTeX
@MISC{Xia_interactiveweathering,
author = {Lin Xia and Zilong Dong and Guofeng Zhang and Duanjin Chen and Hujun Bao},
title = {Interactive Weathering of Depth-Inferred Videos},
year = {}
}
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Abstract
Aging or weathering is an important technique for generating natu-ral images in computer graphics. In this paper, we propose a novel video weathering method which can synthesize the weathering ef-fects for the real captured videos. We rst recover the depth maps of the input video, and employ a depth-based interactive video ob-ject cutout method to efciently extract the target objects. Then, we sample the 3D point cloud from the recovered depth maps within the specied object mask, and reconstruct the 3D geometry model. In order to make the obtained 3D point cloud accurate with small redundancy, we select the pixels with the priority of depth accura-cy and project each sample to other frames to avoid reselection. In the weathering stage, with the reconstructed 3D mesh, we employ-ton tracing to create the weathering map, and then compute the correspondence point for each object pixel on the weathering map by intersecting with the 3D mesh, which is used to resemble the weathering value to blend the texture with the original pixel col-or. We also introduce two interactive tools which allow the user to guide the process of weathering. A number of weathering effects are shown in the experimental results to demonstrate the robustness and efciency of the proposed method.
Keyphrases
depth-inferred video interactive weathering depth map correspondence point input video weathering map object pixel target object weathering stage computer graphic real captured video point cloud novel video point cloud accurate small redundancy specied object mask interactive tool original pixel col-or geometry model experimental result natu-ral image important technique
