Fish Embryo Screen - stoeter/Fiji-Tools-for-HCS GitHub Wiki

Table of Contents

Macros for Fish Embryo Screening

  • This set of macros help to process and analyze images taken on the Opera that contain
    • 3D information (Z-stacks)
    • Information in neighboring images (stitching)
    • Information in a special region of the image that cannot be segmented by other methods
  • Helpful for large objects such as, whole organisms, 3D cultures, tissues…
  • The method of screening fish embryos on the Opera is about to be published…

Imaging Requirements

  • Opera images (.flex)
  • Z-stacks
  • Fields in well without gaps, so that fields can be stiched
  • Special order of field acquisition (details)

The Fiji Macros

  • After image acquisition one needs to run three macros sequentially.
  1. Opera Stack Montage for Fish
    1. This macro converts .flex into .tif, stiches fields, does Z-projection
  2. Select ROI for Segmentation
    1. This macro allows to draw ROI for segmentation by the user
  3. Segment2D in ROI
    1. This macro segments image within ROI and measures object properties

Final Data and Analysis

  • Input (what you need to have and do)
    • .flex
    • Manual drawing of ROI per well
    • Adjusting segmentation parameter
  • Output (what you will get)
    • .tif, raw image stacks stitched to montage per channel
    • .tif, Z-projected images stitched to montage per channel
    • .png RBG merge of channels
    • .zip for ROI and for object lists / outlines from and for Fiji
    • .txt result tables for manual and / or segmentation analysis
    • .png of segmentation channel with drawn ROI and segmentation outlines

Setting Sublayout for Opera

  • Choose fields next to each other that can be tiled later and save .sly on Opera
  • Opera starts in the middle and chooses positions from top to bottom, but fields must be in a special order for montage later
  • Special order is needed: from top left to bottom right within the well
  • Manipulate the sublayout.sly file (is xml format) to obtain the right order of ‘points’ (see example XML and more details)
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