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Analysis of results
From: "Steve Stanley" <firstname.lastname@example.org>
Organization: Auckland Institute of Technology
To: Gideon Ariel <email@example.com>
Date: Fri, 20 Nov 1998 12:04:58 +1200
Subject: 2D analysis
I followed your instructions as below and that has been no problem.
The bit I can't work out is what do do in the the C3D programe once I
have entered YES to select my one *.1T file. If their is two *.1T
files the 3D button is highlighted and all works fine but when their
is only one *.1T file their is no option to run C3D because their is
not enough views for 3D DLT calc's. Therefore what cal's does it do
for a one view 2D capture?
Also when calibrating and digitising in 2D which of X Y and Z is
horizontal, vertical and depth? eg if I had a 1metre ruler vertical
and a 1.5 metre ruler horizontal which would be X Y or Z?
Thanks for your help
1. Capture program
2. DIGI4 Program
File, New and enter Sequence Information
File, New View and enter View Info
File, Open AVI file
Digitize Calibration and Data points
2. Transform Program (C3D)
File, Open the desired sequence
Stephen Stanley MPhEd (Dist)
Faculty of Health Studies
Auckland Institute of Technology
Private Bag 92006
Ph +64 9 3079999 ext 7177
Fax +64 9 3079988
From: firstname.lastname@example.org (Sun G. Chung)
To: "Gideon Ariel" <email@example.com>
Cc: "John Probe" <firstname.lastname@example.org>
Subject: More questions in a long text.
Date: Sun, 28 Feb 1999 12:44:38 +0900
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X-MIME-Autoconverted: from base64 to 8bit by FOUR.net id WAA05627
Hello Dr. Ariel and John,
How are you? Below is a long text. So, I do not expect an immediate reply. Please, reply
me when you afford the time.
Although I do not have the help files, I can figure out a few things on the APAS99 by
trial and error.
I found that the "realcap" captures frame by frame but when I see the AVI files
in "trimming" or "digi32" modules, they have 60 images for one second.
So, practically, the cap32 and realcap are same.
I still cannot clearly understand the "delay" options in realcap and cap32
modules. I will find out what it is.
I tried automatic digitization in digi32 modules to be surprised by how perfectly it work.
I did not used any filtering menu which you showed me in the Plaza hotel, but it worked so
fine with well directed light source, the reflective markers and shutter speed 1/2000.
You or the biomechanists who work with sports activity would not appreciate this great
feature because they seldom use marker tracking function. But this ability is very
critical for the users as me who should get Euler angles etc.. with marker tracking. With
this feature, the APAS2.0 is not a merely upgraded one but a totally new one.
We may not need far more expensive infrared system any more, which shows us only markers.
Why don't you present this feature on your web "what's new for the APAS2.0"
I have two questions about the digi32.
First, John said that the "auto digi" has two option. One is taking the
brightest(or darkest) point of the marker and the other is taking the centroid of the
marker. How can I select the option? Which option is default for the auto
brightest(or darkest) or centroid?
Second, I would like to know about the various functions "Enhance" menu. Do you
have any written material(eg, txt files) about the functions? If you have, please give me
the files. Or if you do not have any written material about them, would you let me know
which function did you showed me in the Plaza hotel? I remember that you ran the
"enhance->adjust->gamma" but I cannot remember the next function that you
ran to make the marker more spherical. Was it "enhance->filter->median" ?
What is the MMtray.exe in the M3jpeg.zip(Morgan codec driver)? It seems an essential
driver for the notebook APAS. The digi32 could not open the avi files that I get with Buz
when I didnot run the MMtray, after I installed morgan jpeg driver.
In the digi32 module, what is the option "image->video->MJPEG:normal order vs
reversed order"? I can find a similar option in "trimming" module as
"options->MJPEG-> MJPEG:normal order vs reversed order". When I choose the
reversed order, the images go to and fro. When should I use the reversed order?
Oh!! I saw your web page containing the news of the APAS of our college. I should work
harder to fill the page with more scientific contents.
May I post this kind of questions on the APAS news group? If then, can I get the same
quality and speed of answers as this way?
Don't you run a mailing list associated with the APAS news group? I think the mailing list
would be closer to the subscribers than newsgroup. I automatically check the incoming mail
by 30min interval but I check the newsgroup once or twice per week. One reason why i do
not visit the newsgroup folder frequently is that i should click some more than the
incoming mail. The other reason is that I cannot leave the newsgroup folder without
visiting the hot xxx newsgroups. It interrupts my time and thoughts for a while every time
I check the newsgroup. :-)
Hope to hear from you.
P.S. : Will you mail me the word file which has the kinematic and kinetic evaluation
protocol for the compensation cases as back pain ... .
Stan & I are both correct on the issue of powering
electrodes with the new CES 16 channel board. If the board does NOT have the DC-DC
converter installed on the board, there is no on board power for the electrodes and 9v
batteries must be used. However if the DC-DC converter is mounted on the board then it can
power the electrodes depending on the setting of the jumpers. With CES, the DC-DC is
I have installed the PCI analog board in my system
& I think I understand the nature of the problems which have been encountered trying
to get the PCI version of the boards working.
It basically boils down to this. The board will
not work properly if it is sharing an interrupt# with another board. It is easy to check
this. Go to Device Manager, highlight "Computer" and click on the properties
button. A listing of the interrupt#'s and the boards which use them will appear. Int #9 is
where I find my A/D board. If there are other boards listed as using this same interrupt
the A/D does not work. If you find another board using this interrupt go to the properties
for that board and check the "Disable" checkbox. You do not need to re-boot the
computer. The device should become disabled. Now try the Analog program. It should work if
all of the sharing boards are so disabled.
I contacted Computerboards about this & they
confirmed that the board indeed will not work if there is interrupt sharing. They have a
fix in the form of an updated version of CBW32.DLL. Their WEB site is currently down. I
will get it as soon as I and check it out and send it off to you if the problem is solved.
Yes, the interrupt problem is a problem we know about and we do go ahead and try to
isolate the board to it's own IRQ.
But we still see a problem that when we first install the board in a new system by
itself(video card only other card installed) the APAS analog will not see the board. This
board on this computer is on IRQ5.
When I put the board into another slot and try it the program works.(board is still on
I then put the board back in the original slot on IRQ5 and it still works with the analog
Not a big problem for us, but it is consistent for the last few systems we put together.
At 02:43 PM 05/26/2000 -0400, you wrote:
I have installed the PCI analog board in my system & I think I understand the nature
of the problems which have been encountered trying to get the PCI version of the boards
working./bigger><?fontfamily> It basically boils down to this. The board will not work properly if it is
sharing an interrupt# with another board. It is easy to check this. Go to Device Manager,
highlight "Computer" and click on the properties button. A listing of the
interrupt#'s and the boards which use them will appear. Int #9 is where I find my A/D
board. If there are other boards listed as using this same interrupt the A/D does not
work. If you find another board using this interrupt go to the properties for that board
and check the "Disable" checkbox. You do not need to re-boot the computer. The
device should become disabled. Now try the Analog program. It should work if all of the
sharing boards are so disabled./bigger> I contacted Computerboards about this & they confirmed
that the board indeed will not work if there is interrupt sharing. They have a fix in the
form of an updated version of CBW32.DLL. Their WEB site is currently down. I will get it
as soon as I and check it out and send it off to you if the problem is solved./bigger> Jeremy/bigger>