ImageJ Macros

This macro recognizes wells in a picture from a multi-well plate (it works also on a picture of a single well). It is used to segment a picture to determine the number of "Colony Forming Units" in each individual well of a plate.

The steps are the following:

1. Makes a 8-bit B&W picture, inverts it (=> borders will look white instead of black), resizes it (optional, this is to speed-up convolution thereafter) and find edges.
2. Convolves the obtained picture with a kernel corresponding to a thick white circle of the size of the wells. The resulting image has big "blobs" or "particles" corresponding roughly to the centers of the well.
3. The image is thresholded to remove particles not corresponding to strong hits and "Analyze particle" is run.
4. The measured parameter is the center of mass of the particles which gives the center of the well. These are saved in an array.
5. Circles are drawn and added to the ROI manager. The centers of the circles are the identified centers of mass of the particles and their radius is the expected radius of the wells in the original image.

A utility macro for the specified use of BioFormats plugin. Takes a folder of proprietary images formats (Zeiss zvi, lsm, czi or Nikon nd2) and extracts them to .tif images

The extracted images are located in a folder defined in the menu. Other options: reset spatial scales, reads ROIs, split channels, add stage position in the name.

note: The old name of the macro was "ZVI Extractor" and the data format was limited to ZVI, but the upgraded version includes more formats.

Requires Bio-Formats plugin

This macro is similar to the LIF_Extractor, but it will output Z-projection of each Z-stack. You can choose the type of projection in addition to the other options. Requires Bio-Formats plugin

This macro extracts .lei and .lif multichannel Z-stacks into multiple .tif stacks, splitting the channels into different stacks. Several options are possible such as background substraction, various filters, or optional reset of spatial scale. Requires Bio-Formats plugin

This macro allows to interact with a large, single channel, z-stack (possibly exceeding the main memory of the computer) and to extract a volume of interest by marking several reference points.