Next version of Video Probing Plugin

for what it is worth, if anything, my last attempt at video probing was with a web camera and a laser. the web camera looked straight down at the work. the laser was mounted at a 45 degree angle. the beam from a cheap line laser was conditioned by passing between a razor gate set at .005 width. we were able to messure height differentials of .002 in a one inch depth using the 640 width of the camera. backing the camera up so the field of vision was four inches deep gave in theory .007 inches per pixel. in pr actace parallex error becomes a factor. we got around that by limiting the field of view to two inches and measuring several places using a known object to determine what the depth error was. a look-up table was used to avoid massive and slow math computations. (this was programed in visual basic 5) but as far as it went the program worked. No i can not send it to you, The progamer left town and we are not on good terms.

Back in the late 80's i was involved in a project for the worlds largest nylon manufacture using a ccd lens looking through a microsope that measured steel spinnerets to less than .0001 inch width with three pixel accuracy. you can get the accuracy you want, you just have to sometimes be a bit clever about it.