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BYU-MicrostructureOfMaterials / OpenXY

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Pattern simulation error #8

Closed GTerHaar closed 6 years ago

GTerHaar commented 8 years ago

Hi,

I am having a problem with the simulation patterns generated. I have not been able to work out where the problem lies. I am assuming that it could either be a microscope settings issue, or calibration issue. (am am assuming the latter). (see simulated pattern below)

image

I am calibrating the PC from my .tiff images (option). Since I do not have access to the parallel programming option, I can not calibrate using the points option. (is there a way around this)

My microscope setting I believe are fine?:

image

Any help on fixing the simulation pattern problem would be appreciated.

Thanks

bjack205 commented 8 years ago

Your camera elevation is atypical. Camera elevations are typically 10 degrees, but I believe can vary from -10 to 10. The camera elevation is the inclination of the camera normal to the horizontal. 90 degrees would mean the plane of your camera is parallel with the the floor.

eretnek commented 8 years ago

The simulated pattern you see that is so terrible is because you have no pattern center in the .cpr file, so it just picks one for you, and the one it picks is terrible (I assume because Brian thinks he's hilarious, but probably so you don't actually use it). Once you run the tiff calibration, however, you should be golden, or goldenesque anyway. My guess is that your camera elevation is whats causing the problem, as Brian said.

Hopefully we'll change it so it checks the tiff to get your initial guess so that your simulated pattern looks better. For now, starting the scan with the display patterns box checked should show you how close you are.

On Tue, Oct 20, 2015 at 9:45 AM, Brian Jackson notifications@github.com wrote:

Your camera elevation is atypical. Camera elevations are typically 10 degrees, but I believe can vary from -10 to 10. The camera elevation is the inclination of the camera normal to the horizontal. 90 degrees would mean the plane of your camera is parallel with the the floor.

— Reply to this email directly or view it on GitHub https://github.com/BYU-MicrostructureOfMaterials/OpenXY/issues/8#issuecomment-149572827 .