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segmentotsu-widget.md

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Segment images.

otsu

MM3 can use either deep learning or a traditional machine vision approach (Otsu thresholding, morphological operations and watershedding) to locate cells from the subtracted images. For info on the deep learning-based segmentation widget, see SegmentUNet.

The following four parameters are important for finding markers in order to do watershedding/diffusion for segmentation. They should be changed depending on cell size and magnification/imaging conditions.

OTSU parameters

  • first_opening_size : Size in pixels of first morphological opening during segmentation.
  • distance_threshold : Distance in pixels which thresholds distance transform of binary cell image.
  • second_opening_size : Size in pixels of second morphological opening.
  • min_object_size : Objects smaller than this area in pixels will be removed before labeling.

The working directory is now:

.
├── 20170720_SJ388_mopsgluc12aa.nd2
├── TIFF
├── analysis
│   ├── time_table.pkl
│   ├── time_table.txt
│   ├── TIFF_metadata.pkl
│   ├── TIFF_metadata.txt
│   ├── channel_masks.pkl
│   ├── channel_masks.txt
│   ├── channels
│   ├── crosscorrs.pkl
│   ├── crosscorrs.txt
│   ├── empties
│   ├── segmented
│   ├── specs.yaml
│   └── subtracted