期刊
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
卷 39, 期 8, 页码 1605-1616出版社
IEEE COMPUTER SOC
DOI: 10.1109/TPAMI.2016.2610425
关键词
Saliency detection; light field; Lytro; focus stack
资金
- National Science Foundation [IIS-1218156]
- Direct For Computer & Info Scie & Enginr
- Div Of Information & Intelligent Systems [1319598] Funding Source: National Science Foundation
Existing saliency detection approaches use images as inputs and are sensitive to foreground/background similarities, complex background textures, and occlusions. We explore the problem of using light fields as input for saliency detection. Our technique is enabled by the availability of commercial plenoptic cameras that capture the light field of a scene in a single shot. We show that the unique refocusing capability of light fields provides useful focusness, depths, and objectness cues. We further develop a new saliency detection algorithm tailored for light fields. To validate our approach, we acquire a light field database of a range of indoor and outdoor scenes and generate the ground truth saliency map. Experiments show that our saliency detection scheme can robustly handle challenging scenarios such as similar foreground and background, cluttered background, complex occlusions, etc., and achieve high accuracy and robustness.
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