Adaptive pixel/patch-based synthesis for texture compression

This paper presents an adaptive scheme for synthesizing missing textured regions. In synthesis-based compression approaches, large textures are removed at encoder side and filled in at decoder side. This work proposes a synthesizer in which both complementary pixel-based and patch-based approaches a...

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Bibliographic Details
Main Authors: Racape, Fabien, Lefort, Simon, Francois, Edouard, Babel, Marie, Deforges, Olivier
Format: Conference Proceeding
Language:English
Subjects:
Algorithm design and analysis
characterization
Conferences
Context
Discrete cosine transforms
Image coding
Switches
synthesis
Synthesizers
texture
Online Access:Request full text
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Description
Summary:This paper presents an adaptive scheme for synthesizing missing textured regions. In synthesis-based compression approaches, large textures are removed at encoder side and filled in at decoder side. This work proposes a synthesizer in which both complementary pixel-based and patch-based approaches are used. According to results shown by synthesis algorithms, patch-based and pixel-based approaches are efficient with different kinds of texture. Two algorithms are adapted to the region synthesis context: the sample patch is built from surrounding texture and potential anchor blocks inside the removed region; the scan order depends on a confidence map in order to take advantage of the designed patch; DCT-descriptors provide the minimum size of matching window which is a required parameter for both synthesizers. Finally an "a posteriori" gradient based assessor enables the synthesizer to switch between algorithms.
ISSN:1522-4880
2381-8549
DOI:10.1109/ICIP.2011.6116624