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3:30 am
May 27, 2010
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jiaolongchin
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Post edited 7:31 am – May 27, 2010 by jiaolongchin
Hello,
Can anyone tell me? what does invert y axis mean on the Diffusion Toolkit?
Any comments will be appreciated.
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2:20 pm
May 28, 2010
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Ruopeng
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Invert Y means the program will invert the Y component of each eigenvector before applying the fiber tracking process. It is a hack to resolve vector flipping issue that sometimes appears in image coordinate.
Ruopeng
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9:43 pm
May 28, 2010
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jiaolongchin
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Thank you for the reply! Could you give me a example how to invert Y axis?
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3:06 pm
June 1, 2010
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Ruopeng
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You mean how to apply invert Y? You do that in Diffusion Toolkit GUI (look for "Orientation Patch" in Tracking section). Or if you run the program as command-line, apply "-iy" flag in dti_tracker.
Ruopeng
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10:44 pm
June 2, 2010
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jiaolongchin
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Thank you for the reply. I konw how to apply invert Y on the Diffusion Toolkit software. I mean how to invert the Y component of each eigenvector?
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12:10 pm
June 3, 2010
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Ruopeng
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Uhh, Vy = -Vy? Sorry I'm not sure I followed your question. 
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8:49 pm
June 9, 2010
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jiaolongchin
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I see, thank you for your reply.
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