GEGL-0.1.2

Table of Contents

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GEGL

GEGL

GEGL (Generic Graphics Library) is a graph based image processing
framework.

GEGL provides infrastructure to do demand based cached non destructive
image editing on larger than RAM buffers. Through babl it provides
support for a wide range of color models and pixel storage formats for
input and output.

Features

  • Floating point handling and processing and output of larger 8bit,
    16bit integer and 32bit floating point per component buffers larger
    than RAM.

  • C, vala, C#, Python and Ruby interfaces using a consistent DOM like
    graph API to manage processing graphs.

  • Processing

      □ Iterative chunk-wise processing.

      □ Processes subregions and dependencies.

      □ Subgraph caches to aid performance of non-destructive editing.

  • GeglBuffer

      □ Storage of all babl supported formats.

      □ Tiled sparse buffers (larger than RAM images).

      □ linear buffers (allocated internally or from external
        allocation.)

      □ On demand tiled mipmapping.

      □ inter process shared storage

  • Operations

      □ PNG, JPEG, SVG, EXR, RAW, ffmpeg, v4l and other image sources.

      □ Pattern renderers

      □ Arithmetic operations

      □ link_operations.html#porter_duff[porter duff compositing]

      □ SVG filter modes and full set of compositing ops from SVG-1.2
        draft.

      □ Gaussian blur, bilateral-filter, symmetric nearest neighbour,
        unsharp mask.

      □ Color correction.

      □ Text rendering using cairo and pango.

      □ Most operations operate in scRGB (using 32bit linear light
        RGBA)

  • Bounding box based hit detection.

  • XML se                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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