Jv. White et al., QUANTITATIVE POROSITY DETERMINATION OF THIN-SECTIONS USING DIGITIZED IMAGES, Journal of sedimentary research, 68(1), 1998, pp. 220-222
NIH Image, freeware for Macintosh computers, is used to obtain quantit
ative porosity values from digitized images of thin sections. The digi
tal images are modified to reduce contrast and give the pores, or feat
ure of interest, a unique color. NIH Image is used to measure the numb
er of pixels of each color in the pore space and the total number of p
ixels in the image. This technique can be used for quantitative assess
ment of any digital image.