Batch Processing: Adjusting B&C and Using Channel tool

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Batch Processing: Adjusting B&C and Using Channel tool



Attached are two different format (.Flex & .Tiff) of the same files generated by a high throughout screen and there are hundreds of those. I am a bit new to Image J and want to see whether I can do the following.

1. To describe the contents of the image : the odd numbered channels (1,3,5) are the Green channels and the even numbered (2,4,6) are the corresponding Red channels (1-2 ; 3-4 ; 5-6)
2. My objective is to set all Green channels MinAndMax as (10, 190) and a;; Red Channels MinandMax as (20.450).
3. Then add "Green" to all green channels and "Red" to all red channels > Save them as coloured png images.

So far I have wrote the the following macro by looking into other examples  to resolve problem 2. I have broken the "Flex" file into three different stacks containing the "Green" and it's corresponding "Red" channel. Choose channel 1 and channel 2 separately. Assign the required MinAndMax and save them into three separate "tiff" files.

macro split_stack{
dir1 = getDirectory("Choose source directory");
list = getFileList(dir1);
dir2 = getDirectory("Choose destination directory");
a = 1;
 Dialog.addNumber("Number of images per stack",a);;
a = Dialog.getNumber();
for (i=0; i<list.length; i++) {
 getDimensions(width, height, channels, slices, frames);
 title = File.nameWithoutExtension;
 for (j=1; j< slices;j+=a){
  k = j+a-1;


  run("Make Substack...", "channels=1-"+channels+" slices="+j+"-"+k);
  saveAs("tif", dir2+title+"-stack"+counter+".tiff");
showMessage("Macro is finished");


Firstly, I am not sure whether it had identified the correct MinAndMax for channel 1 as the output looks like it was using the values set for Channel 2.  Secondly, how can I add the macro line to choose the correct colour for each channel?

Thanks in advance