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Computational PhotographyCS 498
Ben Bower
• What is computational photography?
• What is it used for?
• Computational imaging techniques
– High Dynamic Range Imaging
– Light fields• Light Field Rendering
• Synthetic Aperture Photography
– Relighting Through Computation
High Dynamic Range (HDR) Imaging
• Increasing the color contrast and range
• HDR imaging for
– static scenes
– non-static scenes
Light Fields
• A function of the amount of light traveling in every direction through every point in space.
• Light Field Rendering
• Synthetic Aperture Photography
Light Fields
• Light Field Rendering
Light Fields
• Synthetic Aperture Photography
• First observed by Leonardo da Vinci
• This idea can be used in photography with an array of cameras
Relighting Through Computation
• Changing the lighting of an image
– Intensity
– Color
– Origin of light
Relighting Through Computation
• Light is additive
– This concept is used to change the intensity and origin of the light
• Color
– Scaling the color channels of an image
Light Stage
Summing it up...
• Computational photography is still new
• It has many applications and will continue to grow as technology increases
• questions?
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