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Concept
Computational photography
Summary
Computational photography refers to digital image capture and processing techniques that use digital computation instead of optical processes. Computational photography can improve the capabilities of a camera, or introduce features that were not possible at all with film based photography, or reduce the cost or size of camera elements. Examples of computational photography include in-camera computation of digital panoramas, high-dynamic-range images, and light field cameras. Light field cameras use novel optical elements to capture three dimensional scene information which can then be used to produce 3D images, enhanced depth-of-field, and selective de-focusing (or "post focus"). Enhanced depth-of-field reduces the need for mechanical focusing systems. All of these features use computational imaging techniques.
The definition of computational photography has evolved to cover a number of
subject areas in computer graphics, computer vision, and applied
optics. These areas are given below, organized according to a taxonomy
proposed by Shree K. Nayar. Within each area is a list of techniques, and for
each technique one or two representative papers or books are cited.
Deliberately omitted from the
taxonomy are (see also )
techniques applied to traditionally captured
images in order to produce better images. Examples of such techniques are
dynamic range compression (i.e. tone mapping),
color management, image completion (a.k.a. inpainting or hole filling),
digital watermarking, and artistic image effects.
Also omitted are techniques that produce range data,
volume data, 3D models, 4D light fields,
4D, 6D, or 8D BRDFs, or other high-dimensional image-based representations. Epsilon photography is a sub-field of computational photography.
Photos taken using computational photography can allow amateurs to produce photographs rivalling the quality of professional photographers, but currently (2019) do not outperform the use of professional-level equipment.
This is controlling photographic illumination in a structured fashion, then processing the captured images,
to create new images.
Official source
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