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    block this user Patrick Horain

    Associate Professor

    Institut Mines-Telecom / Telecom SudParis

    Tiling and Demand Driven Evaluation for Picture Processing

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    We propose a software architecture for picture processing with three objectives. Images are represented as a set of tiles that are computed on demand, i.e. when needed as arguments to some operator. An image is indeed an operator instance that includes a call back function to respond to tile demands. Tiling avoids to store whole images. Demand driven evaluation shortens the time intermediate results must be kept in memory before they are used in further processing. This allows efficient memory management when many operators are applied to large images. Second, this architecture is a path towards automated parallelization. The kernel layer can spread the computation of image tiles to several processing threads. At last, application development should not be made more complex in comparison to classical techniques. Applications are written as functional programs that describe relationships between images. Writing a new operator class can mostly be done by copying other operator classes ; ...

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    Description

    Title : Tiling and Demand Driven Evaluation for Picture Processing
    Abstract : We propose a software architecture for picture processing with three objectives. Images are represented as a set of tiles that are computed on demand, i.e. when needed as arguments to some operator. An image is indeed an operator instance that includes a call back function to respond to tile demands. Tiling avoids to store whole images. Demand driven evaluation shortens the time intermediate results must be kept in memory before they are used in further processing. This allows efficient memory management when many operators are applied to large images. Second, this architecture is a path towards automated parallelization. The kernel layer can spread the computation of image tiles to several processing threads. At last, application development should not be made more complex in comparison to classical techniques. Applications are written as functional programs that describe relationships between images. Writing a new operator class can mostly be done by copying other operator classes ; ...
    Subject : unspecified
    Area : Computer Science
    Language : English
    Affiliations
    Url : http://pollux.int-evry.fr/Publications/horain/spie95.ps.gz
    Doi : 10.1.1.54.1205

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