Convert3D ITK-based Image Manipulation Tool
jilei-hao / c3d Goto Github PK
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Convert3D tool
License: GNU General Public License v3.0
This project forked from pyushkevich/c3d
Convert3D tool
License: GNU General Public License v3.0
Convert3D ITK-based Image Manipulation Tool
Dear Jilei,
I hope this message finds you well. I encountered a technical issue while attempting to post my message on the forum website (itksnap-users), and despite several attempts, I was unable to resolve the matter.
As per the guidelines and protocol, I understand the importance of communicating through the forum. However, due to the unforeseen circumstances, I am reaching out to you directly via email to ensure that my message does not go unnoticed.
Dear Jilei, I am writing to report an unexpected behavior I encountered while using the -divide command in c3d. According to the documentation, the -divide command should perform element-wise division of two images. However, when I attempted to divide Inphase.nii by opposite_phase.nii using the following command:
Inphase.nii opposite_phase.nii -divide -o ratio.nii
The resulting pixel values in ratio.nii were equal to the ratio of opposite_phase.nii to Inphase.nii, rather than the expected ratio of Inphase.nii to opposite_phase.nii. This unexpected behavior contradicts the documentation and makes it difficult to perform the desired arithmetic operation.
I have carefully reviewed the c3d manual guide to ensure that I am using the -divide command correctly. The documentation clearly states that the command should perform element-wise division of two images, yet the actual behavior is the opposite.
To reproduce this issue, please follow these steps:
Download two images, Inphase.nii and opposite_phase.nii.
Execute the following command:
c3d Inphase.nii opposite_phase.nii -divide -o ratio.nii
Inspect the resulting image, ratio.nii, and verify that the pixel values are equal to the ratio of opposite_phase.nii to Inphase.nii.
I have included the images mentioned in this message for your consideration.
Best Regards, Mohammad
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