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CVPR 2010 tutorial Computational photography

Coded Computational Imaging

Amit Agrawal, Ashok Veeraraghavan, Srinivasa Narasimhan, and Ankit Mohan

June 14, 2010 · Half-day morning session

Overview

Capture more by changing how cameras sample light.

Computational imaging combines optics, sensors, illumination, and reconstruction algorithms to capture information beyond a conventional photograph. This tutorial covers angular sampling for light fields and digital refocusing, coded exposure for motion deblurring, aperture modulation for depth estimation, and computational illumination.

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  • Introduction · PDF

    Srinivasa Narasimhan · 10 minutes

    • History of images and imaging
    • Introduction to computational imaging
    • Course details
  • Assorted Pixels · PDF

    Srinivasa Narasimhan · 20 minutes

    • Dimensions of imaging
    • Multiplexing and multi-dimensional sampling
    • Assorted pixel cameras: intensity, color, polarization, depth, focus, angle, and time
    • HDR imaging and videography
  • Coding and Modulation in Cameras · PDF

    Amit Agrawal · 45 minutes

    • Photo manipulation versus coded imaging
    • Point spread function invertibility and invariance
    • Handling motion blur and defocus blur
    • Strobing cameras: high-speed imaging of periodic signals using compressive sensing
    • Coded sampling for temporal super-resolution
  • Light Fields and Applications · PDF

    Ankit Mohan · 60 minutes

    • Introduction to light fields and capture methods
    • Shield fields and glare reduction
    • Reinterpretable imaging: varying resolution after capture
    • BiDi screen for 3D gesture interaction
    • Bokode: camera-based interaction from a distance
  • Computational Illumination · PDF

    Srinivasa Narasimhan · 45 minutes

    • Geometry acquisition
    • Acquiring material properties and appearance
    • Acquiring volumetric media
    • High-speed vision
    • Novel displays
  • Future Directions · PDF

    Amit Agrawal · 15 minutes

    • Imaging beyond computer vision
    • Smart optics, smart sensors, and smart lighting
    • Challenges in image authentication, privacy, and social impact