Advanced Rock Volume Segmentation Guidelines
Learn how to precisely segment different rock components like fractures, matrix, and background in segmented tiff stacks using FIJI ImageLookup tables. Follow step-by-step instructions to calculate volumes accurately and recalculate after removing the background for realistic results.
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Presentation Transcript
To work total % volumes Open segmented tiff stack (the one that also segmented out the background) in FIJI Image Lookup tables (I usually use glasbey on dark as it shows up well) This example has three segmented types: fractures, matrix and outside
To work total % volumes Image Adjust-->Threshold Moving the threshold bars around you should be able to figure out the order (from left to right) the parts that are seg. Fractures in dark red
2 Matrix in dark red
3 Background in dark red
Then check off Stack histogram so you are looking at the entire stack and not just one slice Give it a minute or two to process Scroll both bars over to the left % given in same order we previously worked out, here fractures are 6.97% volume pre-correction
Move slider bars to get 2nd %, make sure to move both slider bars or it will sum the previous seg. in 2nd one matrix is 33.69%
Now you need to recalculate based on removing the background so you get a realistic answer for the rock. 6.97+33.69+ 59.34=100 (I always check since I m paranoid) 100-59.34=40.6 6.97/40.6=17.2% fractures by volume 33.69/40.6=82.99% matrix by volume
