Multiresolution Segmentation

This example shows how to perform multiple segmentation in the image, using coarse and fine resolutions. We use three methods for segmentation currently available in InterIMAGE, namely Region Growing, Baatz and Checkerboard.

ta_interimage_examples_multiresolution_segmentation.zip

Create a new project called “multiresolution_segmentation”.

Afterwards create a structure to perform segmentation. We initially create a node called “coarse_segmentation” which applies the TA_Region_Growing_Segmentation operator. We also create three child nodes, called “fine_segmentation”, “fine_checkerboard”, and “background” with TA_Baatz_Segmentation, TA_Checkerboard_segmentation and “Dummy Top Down” operators respectively. The node “background” will be associated to the remaining elements.

The segmentation parameters used were:

• coarse_segmentation (TA_Region_Growing_Segmenter)
  • Euclidean Distance threshold: 40
  • minimum segment size: 200
  • fine_segmentation (TA_Baatz_Segmenter)
    • Compactness weight: 0.5
    • Color weight: 0.5
    • Scale parameter: 20
    • Decision rule:
      • mean('b1') < 240 AND mean('b2') < 240 AND mean('b3') < 240
  • fine_checkerboard (TA_CheckerBoard)
    • Number of grid lines: 10
    • Number of grid columns: 10
    • Decision rule:
      • ratio('b1') > 0.4
  • background (Dummy TopDown)

Insert these rules in the nodes, by clicking in TopDown Decision Rule. Note: Select the option No Merge, as the Lower-level Rule for all Top Down nodes.

After running your project, the result should look as the following figure: