Title:
A method and a device for reframing of a video signal, and encoding
Document Type and Number:
Japanese Patent JP5974089
Kind Code:
B2
Abstract:
Reframing is used to re-size an image or video content, e.g. for displaying video signals with a given aspect ratio on a display having a different aspect ratio. Window cropping parameters (position and size over time) are constrained in order to optimise the rate/ distortion of the encoded output video signal. Initial reframing is improved by computing a saliency map which considers the video coding context and by optionally providing a macroblock coding cost map and then taking the saliency map or a combined saliency/coding cost map into account so that the coding cost for said reframed video signal is smaller than the coding cost for another candidate reframing windows' sizes and positions.
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Inventors:
Urban, fabrics
Chamaret, Christel
Guillotel, Philip
Chamaret, Christel
Guillotel, Philip
Application Number:
JP2014520583A
Publication Date:
August 23, 2016
Filing Date:
June 25, 2012
Export Citation:
Assignee:
Thomson Licensing
International Classes:
H04N19/132; H04N19/85; H04N19/147; H04N19/176
Domestic Patent References:
| JP2008533892A | ||||
| JP2007035038A |
Foreign References:
| WO2007014850A2 | ||||
| WO2006072536A1 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki
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