ActionShot

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Synthetic photograph with several appearances of a guy riding a bicycle on a bicycle ground
ActionShot photograph of a bicycle rider.
Synthetic photograph with several appearances of snowboarder gliding over a snow-covered valley
ActionShot photograph of a snowboarder.

ActionShot is a method of capturing an object in action and displaying it in a single image with multiple sequential appearances of the object.

Additional names: action synopsis, motion synopsis, panoramic video synopsis, dynamic still, synopsis mosaic, stromotion.

Background[edit]

There are many methods for capturing panoramic images, some being fully manual or semi-automatic, and others completely automatic. However, the majority of these methods are for creating panoramic photos of a static landscape. In contrast, the capture of a dynamic scene — i.e. recording the motion of a moving object — is typically done by video recording.

ActionShot is a method that combines elements of both panoramic and video photography to create panoramic photos of dynamic scenes that take place over a wide-angle area. This involves capturing a moving object (e.g. a person running, riding a bicycle or skiing) and depicting multiple instances of this object over a single panoramic background.

Methods[edit]

Hardware[edit]

Stroboscopes have been used to create static images of an action. The moving object is illuminated by the periodic light flashes generated by the stroboscope and is shot by a stills camera using a long exposure. This results in a photograph that displays multiple images of the object along its path.

ActionShot photography is now available as part of camera application on Samsung Android Galaxy Premium Devices (Samsung Galaxy S and Samsung Galaxy S2)

Manual image editing[edit]

To create a dynamic panoramic image manually, a photographer needs to take several shots of a moving object and then combine them together using manual image registration, followed by manual image stitching. Image editing programs can assist in this process.[1]

Automatic image processing[edit]

Early digital image processing methods created a "synopsis mosaic" by building a panoramic image a video sequence where higher weights were assigned to the moving objects.[2] However, good image registration and stitching alone were not sufficient for creating a realistic image, because if the moving object overlaps itself, the combined result seems highly unnatural.[3] This in order to create eye-catching synopsis still images, and even videos, the moving objects are required not to overlap in the composed result.[4]

Related methods[edit]

See also[edit]

References[edit]

  1. ^ Kaan Kiran , Composing an Action Sequence Shot. DIYPhotography.net Photography and Studio Lighting. [1]
  2. ^ M. Irani, P. Anandan, J. Bergen, R. Kumar, and S. Hsu, Efficient Representations of Video Sequences and Their Applications . Signal Processing: Image Communication, special issue on Image and Video Semantics: Processing, Analysis, and Application, Vol. 8, No. 4, May 1996. [2]
  3. ^ Dynamic still examples
  4. ^ Y.Pritch, A.Rav-Acha, S.Peleg. Video Synopsis and Indexing.

External links[edit]