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Dappled photography: mask enhanced cameras for …
- https://dl.acm.org/doi/10.1145/1276377.1276463
- none
Dappled Photography: Mask Enhanced Cameras for …
- https://web.media.mit.edu/~raskar/Mask/Sig07CodedApertureOpticalHeterodyningLowRes.pdf
- adding masks to diffraction-limited systems such as microscopes. Scanner Lens Lens Mask Sensor Mask Sensor Light Field Camera Encoded Blur Camera bellow Mask Scanner sensor Figure 2: Prototype camera designs. (Top Left) Heterodyne light field camera holds a narrowband 2D cosine mask (shown in bottom left) near the view camera’s line-scan sensor.
Dappled Photography: Mask Enhanced Cameras for …
- https://web.media.mit.edu/~raskar/Mask/Paper/raskarLightFieldSig07paper.pdf
- Our mask-based heterodyne light field camera is conceptually dif-ferentfrompreviouscameradesignsintwoways. First,itusesnon-refractive optics, as opposed to refractive optics such as microlens array [Ng et al. 2005]. Secondly, while previous designs sample in-dividualraysonthesensor,mask-baseddesignsampleslinearcom-bination of rays in …
Dappled photography: Mask enhanced cameras for …
- https://www.scholars.northwestern.edu/en/publications/dappled-photography-mask-enhanced-cameras-for-heterodyned-light-f
- T1 - Dappled photography. T2 - Mask enhanced cameras for heterodyned light fields and coded aperture refocusing. AU - Veeraraghavan, Ashok. AU - Raskar, Ramesh. AU - Agrawal, Amit. AU - Mohan, Ankit. AU - Tumblin, Jack. PY - 2007/7/29. Y1 - 2007/7/29
Dappled Photography: Mask Enhanced Cameras for …
- https://www.researchgate.net/publication/215457338_Dappled_Photography_Mask_Enhanced_Cameras_for_Heterodyned_Light_Fields_and_Coded_Aperture_Refocusing
- Analysis of the refocusing ability of the heterodyne light field camera. (Left) If the resolution chart is in focus, one can obtain a full resolution 2D image as described in Section 3.6, along ...
Dappled photography: Mask enhanced cameras for …
- https://www.scholars.northwestern.edu/en/publications/dappled-photography-mask-enhanced-cameras-for-heterodyned-light-f-4
- Our mask-equipped camera focuses just as a traditional camera to capture conventional 2D photos at full sensor resolution, but the raw pixel values also hold a modulated 4D light field. The light field can be recovered by rearranging the tiles of the 2D Fourier transform of sensor values into 4D planes, and computing the inverse Fourier transform.
Dappled photography: Mask enhanced cameras for
- https://www.academia.edu/2741771/Dappled_photography_Mask_enhanced_cameras_for_heterodyned_light_fields_and_coded_aperture_refocusing
- Abstract We describe a theoretical framework for reversibly modulating 4D light fields using an attenuating mask in the optical path of a lens based camera. Based on this framework, we present a novel design to reconstruct the 4D light field from a ... Dappled photography: Mask enhanced cameras for heterodyned light fields and coded aperture ...
CiteSeerX — Dappled photography: mask enhanced …
- https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.297.3808
- CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Figure 1: Our heterodyne light field camera provides 4D light field and full-resolution focused image simultaneously. (First Column) Raw sensor image. (Second Column) Scene parts which are in-focus can be recovered at full resolution. (Third Column) Inset shows fine-scale light field …
Dappled Photography: Mask Enhanced Cameras for
- https://www.cs.cmu.edu/~ILIM/projects/IM/aagrawal/sig07/index.html
- The cosine mask modulates the incoming 4D light field. In this example, the mask has 4 harmonics, or 4*2+1 = 9 impulses in its frequency response. Thus, we get 9*9=81 replicas in both x and y direction. Now lets see how we can obtain the 4D light field from the modulated 2D photo captured from our Heterodyne Light Field Camera. The entire algorithm
Dappled Photography: Mask Enhanced Cameras for
- http://amitkagrawal.com/sig07/MatlabCodeImages.html
- Now consider taking a 2D photo of the same scene with our Heterodyne Light Field Camera. In this new camera, we place a cosine mask near the sensor. We get an image shown as below. Although this image looks similar to the previous photo captured using a traditional camera, notice the effect of mask on the input photo. The mask
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