- 标题
- 摘要
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Depth Estimation for Lytro Images by Adaptive Window Matching on EPI
摘要： A depth estimation algorithm from plenoptic images is presented. There are two stages to estimate the depth. First is the initial estimation base on the epipolar plane images (EPIs). Second is the re?nement of the estimations. At the initial estimation, adaptive window matching is used to improve the robustness. The size of the matching window is based on the texture description of the sample patch. Based on the texture entropy, a smaller window is used for a ?ne texture. A smooth texture requires a larger window. With the adaptive window size, different reference patches based on various depth are constructed. Then the depth estimation compares the similarity among those patches to ?nd the best matching patch. To improve the initial estimation, a re?nement algorithm based on the Markov Random Field (MRF) optimization is used. An energy function keeps the data similar to the original estimation, and then the data are smoothed by minimizing the second derivative. Depth values should satisfy consistency across multiple views.
关键词： light ?elds,depth estimation,EPI,Lytro
更新于2025-09-23 15:21:21
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[ACM Press ACM SIGGRAPH 2016 Emerging Technologies - Anaheim, California (2016.07.24-2016.07.28)] ACM SIGGRAPH 2016 Emerging Technologies on - SIGGRAPH '16 - AnyLight
摘要： We introduce AnyLight, a novel programmable lighting device that can mimic the illumination effects of a broad range of light sources —both real and imagined—using the principle of integral imaging. The ?at, panel-shaped device functions in essence as a type of light ?eld display, relying on custom, 3D printed optics to precisely control light rays emanating from each point on its surface, simulating the existence of arbitrary light sources concealed within the device, e.g., spotlight, candle, skylight, etc. A room illuminated with AnyLight would allow occupants to manipulate ambient lighting with a degree of freedom unreachable using existing programmable lighting setups, where typically color is the only adjustable parameter.
关键词： computational light ?elds,Integral illumination,programmable lighting.,integral imaging
更新于2025-09-10 09:29:36