Medical Imaging Interaction Toolkit  2018.4.99-cfdaacfc
Medical Imaging Interaction Toolkit
The MatchPoint Registration Evaluation View
map_evaluator_doc.svg
Icon of the MatchPoint Registration Evaluator

Introduction

This view offers the possibility to evaluate the quality of the registration/mapping of two given images by visual inspection. One may select no registration. Then the images will be displayed in evaluation mode assuming an identity transform (so no mapping). It is one of several MatchPoint registration plug-ins.

Contact information

This plug-in is being developed by the SIDT group (Software development for Integrated Diagnostics and Therapy) at the German Cancer Research Center (DKFZ). If you have any questions, need support, find a bug or have a feature request, feel free to contact us at www.mitk.org.

Usage

map_view_example.png
Example screenshot showing the plug-in in use.
To use the evaluation view you must have selected at least the moving and the target image you want to use to evaluate. If you select a registration with referenced target and moving image (the normal state if you generate registrations with the MatchPoint plugins) these images will be auto selected by just clicking on the registration. If you select no registration the view will assume that an identity transform should be used.
As long as no valid set of data is selected the "Start evaluation" button will be disabled. If its enabled you may start the evaluation mode with it.

map_no_data_selected.png
Example screenshot showing the state if no data is selected

If the evaluation view is active you can choose between different modes of visualization. For more details see Visualization styles.
To stop the evaluation mode, you may use the "Stop evaluation" button or just close the evaluation view.

Remarks
The evaluation view will use the level window settings of the used images. So to changes the level windowing of the evaluation view, you must change the level windowing of the respective images.

Visualization styles

You can choose from the following visualization styles to evaluate the registration/mapping quality:

  • "Blend": Blends the images with a user defined weight. Default is 50:50.
    map_style_blend.png
    Example for mode: Blend
  • "Checkerboard": Checkerboard style that composes both images. You may define the resolution of the checkerboard.
    map_style_checkerboard.png
    Example for mode: Checkerboard
  • "Color blend": Color blend of the images (blue: target image; yellow: moving). Areas where you see no color implies good intensity matchings.
    map_style_color_blend.png
    Example for mode: Color blend
  • "Contour": Blend mode that display one image as blue "background" and the other image in yellow contours. You may choose the role of the images.
    map_style_contour.png
    Example for mode: Contour
  • "Difference": Displays the absolute difference of both images.
  • "Wipe": Blend mode that makes a rectilinear combination of the images. You can choose the mode how the images are splitted. The split is synchronized with the current selection. So you may interact with the split border to position it on interesting areas.
    map_style_wipe_cross.png
    Example for mode: Wipe cross
    map_style_wipe_horizontal.png
    Example for mode: Wipe horizontal