Count of Segments

KNIME Extensions
1

I have an image that I split into many individual images. I threshold these and identify the ROI's, now I want a count of the amount of ROI's identified that come from one original image. I have this Segment Features output, screenshot, that gives the amount of pixels, and the subregion of the original image it is found in. I am oblivious however how to perform a simple count of rows per original image. Any suggestions?

Luuk

2

Use the GroupBy node to group by Source Labeling (or by image name) and aggregate with the Count method. To get the original image name or row id in a column, you can use the RowID node before cropping the segments (or use the RowID and String manipulation on your current table).

3

Thanks a lot.

4

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