OrientationJ Measurement

This node performs quantitative orientation measurements according to the ImageJ plugin OrientationJ¹ by the Biomedical Imaging Group (BIG) . It is able to extract the following features from an image: energy, orientation and coherency. A brief theoretical background can be found here .
A Laplacian of Gaussian filtering can be applied as an preprocesing step to the images.
Input must be images with only two dimensions. If needed, images can be sliced with the Image Cropper node.

¹ Z. Püspöki, M. Storath, D. Sage, M. Unser
Transforms and Operators for Directional Bioimage Analysis: A Survey
Advances in Anatomy, Embryology and Cell Biology, vol. 219, Springer International Publishing, ch. 3, 2016.

Options

Laplacian of Gaussian (sigma)

If sigma is greater than zero, a Laplacian of Gaussian filtering will be applied as preprocessing onto the image.

Energy

If selected, the energy feature will be extracted.

Orientation

If selected, the orientation feature will be extracted.

Coherency

If selected, the coherency feature will be extracted.

Column Selection

Column Creation Mode

Mode how to handle the selected column. The processed column can be added to a new table, appended to the end of the table, or the old column can be replaced by the new result

Column Suffix

A suffix appended to the column name. If "Append" is not selected, it can be left empty.

Column Selection

Selection of the columns to be processed.

Views

Image Viewer

Another, possibly interactive, view on table cells. Displays the selected cells with their associated viewer if it exists. Available views are:
- Combined View
-- A viewer shown when the user selects an interval of rows and columns in the viewer. This viewer combines all images and labelings in the selected interval to one image by rendering them next to each other. Alternatively, the images and labelings can be layed over each other.
- Labeling View
-- View on a labeling/segmentation
- Missing Value Viewer
-- An empty viewer that is shown when the input cell has no value to display.
- Histogram Viewer
-- This viewer shows the histogram of the currently selected image.
- BigDataViewer
-- A viewer shown when the user selects an interval of rows and columns in the viewer. This viewer combines all images and labelings in the selected interval to one image by rendering them next to each other. Alternatively, the images and labelings can be layed over each other.
- Image Viewer
-- This viewer renders the selected image-cell.

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Links

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