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2012 IEEE International Conference on Computational Photography (ICCP)

28-29 April 2012

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Displaying Results 1 - 15 of 15
  • 2012 IEEE International Conference on Computational Photography (lCCP) [Copyright notice]

    Publication Year: 2012, Page(s): 1
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    Freely Available from IEEE
  • Fourier Slice Super-resolution in plenoptic cameras

    Publication Year: 2012, Page(s):1 - 11
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1428 KB) | HTML iconHTML

    Plenoptic cameras are a promising solution to increase the capabilities of current commercial cameras because they capture the four-dimensional lightfield of a scene. Processing the recorded lightfield, these cameras offer the possibility of focusing the scene after the shot or obtaining 3D information. Conventional photographs focused on determined planes can be obtained through projections of th... View full abstract»

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  • Flutter Shutter Video Camera for compressive sensing of videos

    Publication Year: 2012, Page(s):1 - 9
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7749 KB) | HTML iconHTML

    Video cameras are invariably bandwidth limited and this results in a trade-off between spatial and temporal resolution. Advances in sensor manufacturing technology have tremendously increased the available spatial resolution of modern cameras while simultaneously lowering the costs of these sensors. In stark contrast, hardware improvements in temporal resolution have been modest. One solution to e... View full abstract»

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  • CS-MUVI: Video compressive sensing for spatial-multiplexing cameras

    Publication Year: 2012, Page(s):1 - 10
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2262 KB) | HTML iconHTML

    Compressive sensing (CS)-based spatial-multiplexing cameras (SMCs) sample a scene through a series of coded projections using a spatial light modulator and a few optical sensor elements. SMC architectures are particularly useful when imaging at wavelengths for which full-frame sensors are too cumbersome or expensive. While existing recovery algorithms for SMCs perform well for static images, they ... View full abstract»

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  • Calibration-free rolling shutter removal

    Publication Year: 2012, Page(s):1 - 8
    Cited by:  Papers (30)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1946 KB) | HTML iconHTML

    We present a novel algorithm for efficient removal of rolling shutter distortions in uncalibrated streaming videos. Our proposed method is calibration free as it does not need any knowledge of the camera used, nor does it require calibration using specially recorded calibration sequences. Our algorithm can perform rolling shutter removal under varying focal lengths, as in videos from CMOS cameras ... View full abstract»

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  • Alignment and mosaicing of non-overlapping images

    Publication Year: 2012, Page(s):1 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5802 KB) | HTML iconHTML

    Image alignment and mosaicing are usually performed on a set of overlapping images, using features in the area of overlap for alignment and for seamless stitching. Without image overlap current methods are helpless, and this is the case we address in this paper. So if a traveler wants to create a panoramic mosaic of a scene from pictures he has taken, but realizes back home that his pictures do no... View full abstract»

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  • Contrast preserving decolorization

    Publication Year: 2012, Page(s):1 - 7
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4972 KB) | HTML iconHTML

    Decolorization - the process to transform a color image to a grayscale one - is a basic tool in digital printing, stylized black-and-white photography, and in many single channel image processing applications. In this paper, we propose an optimization approach aiming at maximally preserving the original color contrast. Our main contribution is to alleviate a strict order constraint for color mappi... View full abstract»

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  • Diffuse structured light

    Publication Year: 2012, Page(s):1 - 11
    Cited by:  Papers (18)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3022 KB) | HTML iconHTML

    Today, structured light systems are widely used in applications such as robotic assembly, visual inspection, surgery, entertainment, games and digitization of cultural heritage. Current structured light methods are faced with two serious limitations. First, they are unable to cope with scene regions that produce strong highlights due to specular reflection. Second, they cannot recover useful infor... View full abstract»

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  • Fast reactive control for illumination through rain and snow

    Publication Year: 2012, Page(s):1 - 10
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (12225 KB) | HTML iconHTML

    During low-light conditions, drivers rely mainly on headlights to improve visibility. But in the presence of rain and snow, headlights can paradoxically reduce visibility due to light reflected off of precipitation back towards the driver. Precipitation also scatters light across a wide range of angles that disrupts the vision of drivers in oncoming vehicles. In contrast to recent computer vision ... View full abstract»

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  • Depth coded shape from focus

    Publication Year: 2012, Page(s):1 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6802 KB) | HTML iconHTML

    We present a novel shape from focus method for high- speed shape reconstruction in optical microscopy. While the traditional shape from focus approach heavily depends on presence of surface texture, and requires a considerable amount of measurement time, our method is able to perform reconstruction from only two images. Our method relies the rapid projection of a binary pattern sequence, while obj... View full abstract»

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  • Variable focus video: Reconstructing depth and video for dynamic scenes

    Publication Year: 2012, Page(s):1 - 9
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6067 KB) | HTML iconHTML

    Traditional depth from defocus (DFD) algorithms assume that the camera and the scene are static during acquisition time. In this paper, we examine the effects of camera and scene motion on DFD algorithms. We show that, given accurate estimates of optical flow (OF), one can robustly warp the focal stack (FS) images to obtain a virtual static FS and apply traditional DFD algorithms on the static FS.... View full abstract»

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  • Depth-aware motion deblurring

    Publication Year: 2012, Page(s):1 - 8
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4678 KB) | HTML iconHTML

    Motion deblurring from images that are captured in a scene with depth variation needs to estimate spatially-varying point spread functions (PSFs). We tackle this problemwith a stereopsis configuration, using depth information to help blur removal. We observe that the simple scheme to partition the blurred images into regions and estimate their PSFs respectively may make small-size regions lack nec... View full abstract»

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  • Super-resolution from internet-scale scene matching

    Publication Year: 2012, Page(s):1 - 12
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (20466 KB) | HTML iconHTML

    In this paper, we present a highly data-driven approach to the task of single image super-resolution. Super-resolution is a challenging problem due to its massively under-constrained nature - for any low-resolution input there are numerous high-resolution possibilities. Our key observation is that, even with extremely low-res input images, we can use global scene descriptors and Internet-scale ima... View full abstract»

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  • Shadow removal for aerial imagery by information theoretic intrinsic image analysis

    Publication Year: 2012, Page(s):1 - 8
    Cited by:  Papers (6)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (11622 KB) | HTML iconHTML

    We present a novel technique for shadow removal based on an information theoretic approach to intrinsic image analysis. Our key observation is that any illumination change in the scene tends to increase the entropy of observed texture intensities. Similarly, the presence of texture in the scene increases the entropy of the illumination function. Consequently, we formulate the separation of an imag... View full abstract»

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  • Exposing image splicing with inconsistent local noise variances

    Publication Year: 2012, Page(s):1 - 10
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2696 KB) | HTML iconHTML

    Image splicing is a simple and common image tampering operation, where a selected region from an image is pasted into another image with the aim to change its content. In this paper, based on the fact that images from different origins tend to have different amount of noise introduced by the sensors or post-processing steps, we describe an effective method to expose image splicing by detecting inc... View full abstract»

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