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Ran into this problem pretty recently actually. We've got a machine that was set up 10 years ago to use a canon DSLR camera to take scaled images we can use to
by grawprog 7y ago
Ran into this problem pretty recently actually. We've got a machine that was set up 10 years ago to use a canon DSLR camera to take scaled images we can use to program with. After ten years the body and lens are dying. We replaced the lens about a month ago after it refused to take pictures due to focussing issues. We wasted half a day recalibrating the grid used to scale the image. It worked well until last week when we started getting focus problems again. We're going to replace the body this time and likely the lens too just to be sure.
There is zero reason a DSLR camera is needed for this setup. Ten years ago it was the best option, but for our application we really don't need it. Sadly, the software we use is 10 years old, usupported and half written in German. Calibrating was a fucking nightmare, more than half the variables in the configuration file were German and the machine support people stopped supporti.g it years ago and don't have any staff familiar with it any more. Anyway tangent aside, a high quality cell phone cameram that's easy to interface with and doesn't have the problems associated with a ten year old DSLR camera would be so much of an improvement.
I also learned because of all of this, cabin cameras have a finite internal memory because of the way pictures are stored internally on the camera's storage and the only way to get more than 10,000 pictures, even if the pictures aren't being stored on the camera is it insertt an SD card which will work once to reset the camera's interal counter which should give you another 10,000 pictures.
- pcunite 7y agoInteresting. Any budget to build something new? Give me shout.
- starky 7y agoIs there a reason why a DSLR was chosen over something like a machine vision camera even 10 years ago? Talking about grids and scaling makes it seem like something that would be right in that product space.
- grawprog 7y agoI have no idea why it was chosen. I was wondering this myself as I was lifted up 20 ft in the air on a forklift change the lens. The grid was configured manually. We laid out 3 plastic sheets over the machine table with 10"x10" squares. We took a picture and manually dragged points on a grid over the software to match the grid on the table. Then the scale and offset and stuff had to be adjusted. The software was somewhat crude. Once you took a calibration picture, it overrode the original and there was no way to make a backup and as I.said before all the scaling and.offset information was input into a configuration file that was almost entirely written in German.