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Light Field Imaging and Processing

Light-field technology heralds one of the biggest changes to imaging since 1826, when Joseph-Nicéphore Niépce made the first permanent photograph of a scene from nature. A single light-field snapshot can provide photos where focus, exposure, and even depth of field are adjustable after the picture is taken. Light-field imaging is far more ambitious. Instead of merely recording the sum of all the light rays falling on each photosite, a light-field camera aims to measure the intensity and direction of every incoming ray. With that information, you can generate not just one but every possible image of whatever is within the camera’s field of view at that moment. The information a light-field camera records is, mathematically speaking, part of something that optics specialists call the plenoptic function. This function describes the totality of light rays filling a given region of space at any one moment. It’s a function of five dimensions, because you need three (x, y, and z) to specify the position of each vantage point, plus two more (often denoted θ and φ) for the angle of every incoming ray.


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Children Social Behavior Understanding in Light Field [Be Ongoing...]

PI: Xue Wang | Code: 61801396 | Support: NSFC | Start/End: 2019-01-01/2021-12-31

4D Light Field Segmentation from Light Field Super-pixel Hypergraph Representation
Xianqiang Lv, Xue Wang, Qing Wang, Jingyi Yu
IEEE Transactions on Visualization and Computer Graphics, 2020, Early Access
Paper | Code | BibTeX | Github

Theory and key technologies of multiview light field computing [Be Ongoing...]

PI: Qing Wang | Code: 61531014 | Support: NSFC | Start/End: 2016-01-01/2020-12-31

4D Light Field Segmentation from Light Field Super-pixel Hypergraph Representation
Xianqiang Lv, Xue Wang, Qing Wang, Jingyi Yu
IEEE Transactions on Visualization and Computer Graphics, 2020, Early Access
Paper | Code | BibTeX | Github

Full View Optical Flow Estimation Leveraged from Light Field Superpixel
Hao Zhu, Xiaoming Sun, Qi Zhang, Qing Wang, Antonio Robles-Kelly, Hongdong Li, Shaodi You
IEEE Transactions on Computational Imaging, 6(1):12-23, 2020.
Paper | Code | BibTeX | Github

4D Light Field Superpixel and Segmentation
Hao Zhu, Qi Zhang, Qing Wang, Hongdong Li
IEEE Transactions on Image Processing, 29(1):85-99, 2020.
Paper | Code | BibTeX | Github







"The man can be destroyed but not defeated。" - Ernest Miller Hemingway