A fuel filter inspection method includes capturing (304) an image of a fuel filter sample (106) using an imaging device (102) and sending the captured image to an image processor (104). The method further includes the image processor (104) receiving (306) the captured image, thresholding (308) the captured image to generate a binary image, determining (312) sizes for a plurality of particles present in the binary image, comparing (316) the size of each of particle of the plurality of particles to a particle size threshold, and quantifying (318) the number of particles of the plurality of plurality of particles with a size greater than the particle size threshold.
The method further includes the image processor (104) comparing (320) the number of particles of the plurality of particles with a size greater than the particle size threshold to a particle count threshold, and modifying a graphical user interface to indicate a state of the fuel filter sample (106) based on the comparison.