The focusing information visualization system of the invention extracts {HEAD ~ an edge} having {TAIL ~ an edge intensity} of not less than a first reference value Th1 and an edge width of not greater than a second reference value Th2 in a photographic image and displays the extracted edge in a preset color at a position of the edge extraction to be overlapped with the original photographic image on a screen 
The focusing information visualization system of the invention extracts { HEAD ~ an edge } having { TAIL ~ an edge intensity } of not less than a first reference value Th1 and an edge width of not greater than a second reference value Th2 in a photographic image and displays the extracted edge in a preset color at a position of the edge extraction to be overlapped with the original photographic image on a screen
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH