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Super resolution Dark field not copied properly?

Added by Bob Grassucci over 8 years ago

We recently change DM to 2.3 and now in super resolution we are getting a dark field image with many bright points rather than a blank image with all zeros. We also changed the detector chip at the same time on our K2. I viewed the dark image in DM and it looks fine. Any thoughts? Thank you.
Bob


Replies (16)

RE: Super resolution Dark field not copied properly? - Added by Anchi Cheng over 8 years ago

Could you tell me if the bright points are at consistent positions or not ? And also also the typical count of the bright points ?

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

Yes the positions seem to be consistent (See image attached) As far as the average values they seem to vary as seen by a max of 2400 for one and a max of 500 for another dark image.

RE: Super resolution Dark field not copied properly? - Added by Anchi Cheng over 8 years ago

If I understand correctly, these are images taken in normal imaging mode but with column valve closed or no beam, not the Dark image you get in Correction Node, right ?

If so, this means you will want to add these points as bad pixels.

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

No these are the dark images taken in the correction node with our K2.

RE: Super resolution Dark field not copied properly? - Added by Anchi Cheng over 8 years ago

Please check the settings of Correction node to make sure that the right camera is selected. I have in the code to modify dark images to make them 0 so it should never show up like that.

The modification only take effect, however, if "Digital Camera" selection is on "GatanK2Super" not "None" (default before the camera class is initiated which takes a little time). It is one of those gui bug impossible to fix. The safest thing to do is to go into Correction Node and deselect and select the right camera.

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

I redid the dark reference making sure to select GatanK2Super and still get the non zero image.

RE: Super resolution Dark field not copied properly? - Added by Anchi Cheng over 8 years ago

Did you have DM 2.30 ? If not, make sure your dmsem.cfg corresponds.

On K2 computer what do you get when running this python script in python command window ?

from pyscope import dmsem
k = dmsem.GatanK2Super()
k.isDM231orUp()

The modification is only done for DM 2.31 and above.

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

We have 2.32

When I run it I get
False

RE: Super resolution Dark field not copied properly? - Added by Anchi Cheng over 8 years ago

Maybe there is some customized code at your site to keep 2.2 alive on the newer versions of Leginon.

Please give me the results of these. In the mean time, you can force a "return True" on isDM231orUp function if you are in a hurry.

from pyscope import dmsem
k = dmsem.GtanK2Super()
k.getDmsemConfig('dm','dm_version')
k.camera.GetDMVersion()
k.getDMVersion()

The three corresponds to different level of DM version number that we can pull out. First one from dmsem.cfg which you configure, second through SEMCCD.dll, and the third is the conversion result.

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

Ok I modified dmsem.cfg to the correct version and now get the proper dark image. Should I redo the brightimage also?

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

I changed dmsem.cfg before I got your last message. Do you still want the results of your script above?

RE: Super resolution Dark field not copied properly? - Added by Anchi Cheng over 8 years ago

There are a lot of changes after 2.31. Yes, I think that would be a good idea.

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

Results
k.getDmsemConfig('dm','dm_version')
2.32.888.0
k.camera.GetDMVersion()
40302
k.getDMVersion()
(40302, '2.3.2')

RE: Super resolution Dark field not copied properly? - Added by Bob Grassucci over 8 years ago

We are anticipating upgrading DM to 3 soon to be consistent with the F20. Will I need to change dmsem.cfg when I do that as well?

RE: Super resolution Dark field not copied properly? - Added by Anchi Cheng over 8 years ago

Yes, but the change in behavior is the same as 2.3.2. Thanks for the script results.

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