[Homer-users] Baffling Problem with Register Atlas to Digitized Points!

[Yucel, Meryem A.]

Hi Yilong,

Not sure about the problem with the dig points. The dig points file should have the coordinates of sources (1 to end) and detectors (1 to end) in the order they appear on the SD file.

For the SD file (probe design), you need to have at least three anchor points to be able register it on the head as in here:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4478785/

Meryem

From: homer-users-bounces at nmr.mgh.harvard.edu [mailto:homer-users-bounces at nmr.mgh.harvard.edu] On Behalf Of Yilong Yang
Sent: Thursday, January 3, 2019 9:44 PM
To: homer-users at nmr.mgh.harvard.edu
Subject: [Homer-users] Baffling Problem with Register Atlas to Digitized Points!


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Dear Homer friends/experts,
I've come to a baffling problem when I'm registering Atlas to Digized Points in recent days! It's a quite burdensome trouble for us! I hope some know this can help us out! We really appreciate and looking forward for any reply! The following is the problem,
When I run Register Atlas to Digitized Points, either with or without the SD file in the subject folder (digpts in the folder), the atlas image seems to be compressed (Figure 1). We actually got those digpts from a FastTrack 3D Digitalizer, the original files are shown in Figure 2. Note that we actually convert this format of dipgts into a text file in AtlasViewer format (Figure 3). Besides, digpts on Atlas (Figure 4) seem to be random and does not correspond to our SD file (Figure 5).
It seems Atlas digpts uses a different cordinate system (a x, z, y system?) instead of a x-y-z system. This troubled us for quite some time. We hope someone who know this could help us out. Thanks!!!!!!

Best,
Yilong Yang

P.S. I've already attached those files in this email.

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