2.4. Image compression
ImageJ was used as the preferred platform for image processing. Users
need to select Plugins→Macros→Record commands in ImageJ to record the
processing procedure and create a new macro for batch processing. The
first step is to convert the RGB image captured by the high-definition
microscope into 8 bits and resize the image (see ”image compress.ijm” in
the supplementary material). All the images were converted automatically
to greyscale, and the size was compressed in batches by the
Process→Batch→Macro commands according to the recorded processing
method, as shown in Figure 1B and Fig.SB.