If you can lay hands on some fine, black monofilament, or whatever it is that's used in gun scopes, you could make an optical crosshair and skip the computer generated one. The real crosshair's position isn't going to wabble about as the camera chenges temperature and it won't be dependent on the video resolution - as long as the camera has enough depth of field to focus on both the crosshair and the feature on the work to which you're aligning.
A google for eyepiece with crosshair shows that one doesn't have to resort to pestering black widow spiders. There are hunks of high quality optical glass with lines carved into them for this sort of use. ;-) -------------------------------------------- On Mon, 8/19/13, Gene Heskett <ghesk...@wdtv.com> wrote: And I'd like to see the crosshairs timed from the camera output as opposed to the arbitrary 640x480 centered locations as that is potentially a source of heat related error as the pcb holding that teeny sensor moves as the pcb grows in the heat. But we're likely stuck with that and will have to depend on the rigidity of the mounts we cobble up. ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
