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    ilastik install and run for Syn Bot (Windows Version)

    Justin T Savage

    Published: 2024-06-24 DOI: 10.17504/protocols.io.5jyl82eedl2w/v1
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    Abstract

    Video instructions for installing ilastik, training an ilastik project, and using the ilastik project for simple SynBot run for Windows operating system.

    Steps

    1.
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    <iframe width="760" height="400" src="http://www.youtube.com/embed/ApOwcOFMUcg?si=azuelTcu87ixq8hy" title="YouTube video player"></iframe>
    
    1.1.

    If video quality is poor, try watching directly from Youtube at http://www.youtube.com/watch?v=ApOwcOFMUcg

    Installing ilastik

    2.

    0:00 - 1:30 Install ilastik by downloading it from ilastik.org/download and running the installer.

    Generate Training Images

    3.

    1:30 - 3:00 Generate training images by running SynBot on a set of images so that any preprocessing steps will be the same as a SynBot run.

    4.

    3:00 - 4:00 Copy two-color training images to a training images folder

    5.

    4:00 - 4:20 Make empty folder for holding red images and green images

    6.

    4:20 - 4:32 Run extract_channels.ijm macro from the extra code folder on the SynBot GitHub repository

    7.

    4:32 - 5:22 Select merged images folder, then red images folder, then green images folder

    Train ilastik model

    8.

    5:22 - 5:39 Open ilastik and start a new Pixel Classification project

    9.

    5:39 - 6:01 Save the ilastik project file to a safe place where you can use it to threshold with SynBot

    10.

    6:01 - 6:20 Click add new image and select the red training image (or images)

    11.

    6:20 - 6:31 Click the "2. Feature Selection" drop down then "select features" and use Ctrl + A to select all features.

    12.

    6:31 - 6:34 Click the "3. Training" drop down to advance

    13.

    6:34 - 6:41 Zoom in image using Ctrl + +

    14.

    6:41 - 7:05 Use the Label 1 to mark several examples of foreground puncta. Only a handful are needed to get started.

    15.

    7:05 - 7:21 Click Label 2 and use this to label some examples of background regions.

    16.

    7:21 - 7:37 Click Live Update to see a rendering of the ilastik model that will update when new markings are added. Use Ctrl + - to zoom out and check how well this model is working.

    17.

    7:37 - 7:49 Save the ilastik project. This saved model will be used by SynBot and you do not need to change anything in the steps 4 or 5 in the ilastik pipeline.

    18.

    7:55 - 9:37 Repeat steps 8-17 for the green channel image

    Run SynBot with ilastik thresholding

    19.

    9:37 - 9:51 Open and run SynBot.ijm

    20.

    9:51 - 10:14 Enter your analysis parameters, including the ilastik thresholding method.

    21.

    10:14 - 10:29 Select ilastik.exe application . On Windows this will typically be in a path like C:/Program Files/ilastik1.4.0/ilastik.exe

    22.

    10:29 - 10:34 Select the ilastik project file for thresholding the red channel.

    23.

    10:34 - 10:40 Select the ilastik project file for thresholding the green channel.

    24.

    10:40 - 10:42 Enter the threshold of ilastik confidence to use for the analysis. ilastik will give a confidence score from 0 to 1 of how likely the given pixel is part of the foreground. A good threshold is something between 0.5 and 0.9.

    25.

    10:42 - 12:14 View results

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