[ITK-users] How to apply affine transformation without sheering ( 9 parameter instead of 12)

[Riya Paul]

Hello ,

I am modifying the source code to do affine transformation. After applying
the affine registration the output image was not so good. I was expecting
more points and more clear image like my reference image.


I am new in itk programming and  I have very basic knowledge about it. I
have already the source code where they are performing affine transformation
( without specifying the parameters) So basically IT is taking completely 12
parameters including the shear / skew parameters. I think may be this is why
the output image is kind of not good. I though If I will use 9 parameters
except the skew parameters then It may be improve the registered output
image quality. Please help me how to do that.


On Tue, May 13, 2014 at 3:03 PM, Kevin B. Zimmerman <
kevin.zimmerman at kitware.com> wrote:

>  To post a message to all the list members, send email to
> insight-users at itk.org.
>
> Kevin B. Zimmerman
> Kitware, Inc.
> 28 Corporate Drive
> Clifton Park, NY 12065kevin.zimmerman at kitware.comhttp://www.kitware.com
>
> On 05/13/2014 08:59 AM, Riya Paul wrote:
>
>  Dear Kevin ,
>
>  I was searching for forum where I can write as new thread. I didn't find
> it. Can you also provide me the link where I can post.
>
>
>  Riya
>
>
> On Tue, May 13, 2014 at 2:56 PM, Riya Paul <riyaforms at gmail.com> wrote:
>
>> Okie :) Danke :)
>>
>>
>> On Tue, May 13, 2014 at 2:50 PM, Kevin B. Zimmerman <
>> kevin.zimmerman at kitware.com> wrote:
>>
>>>  Our mail servers show your registration completed a couple minutes
>>> ago.  You should be all set to post now.
>>>
>>>
>>> Thanks,
>>>
>>> Kevin B. Zimmerman
>>> Kitware, Inc.
>>> 28 Corporate Drive
>>> Clifton Park, NY 12065kevin.zimmerman at kitware.comhttp://www.kitware.com
>>>
>>>   On 05/13/2014 08:46 AM, Riya Paul wrote:
>>>
>>> Yes Kevin !!!
>>>
>>>
>>> On Tue, May 13, 2014 at 2:35 PM, Kevin B. Zimmerman <
>>> kevin.zimmerman at kitware.com> wrote:
>>>
>>>>  Riya -
>>>>
>>>> I don't see your account registered with the list yet.  Did you reply
>>>> to the confirmation email that was sent?
>>>>
>>>> Kevin B. Zimmerman
>>>> Kitware, Inc.
>>>> 28 Corporate Drive
>>>> Clifton Park, NY 12065kevin.zimmerman at kitware.comhttp://www.kitware.com
>>>>
>>>>   On 05/13/2014 08:30 AM, Riya Paul wrote:
>>>>
>>>>   Dear Kevin ,
>>>>
>>>>  I already registered in your link. The username is riya.
>>>>
>>>>  I hope I will get confirmation about my post.
>>>>
>>>>  Best regards,
>>>>
>>>>  Riya
>>>>
>>>>
>>>> On Tue, May 13, 2014 at 2:10 PM, Kevin B. Zimmerman <
>>>> kevin.zimmerman at kitware.com> wrote:
>>>>
>>>>>  Based on your note, it appears you're trying to post through
>>>>> Nabble.  We're in no way affiliated with Nabble, and have no control over
>>>>> their registration process.  You can either contact their support to work
>>>>> out the issue, or register directly for our list here:
>>>>>
>>>>> http://www.itk.org/mailman/listinfo/insight-users
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Kevin B. Zimmerman
>>>>> Kitware, Inc.
>>>>> 28 Corporate Drive
>>>>> Clifton Park, NY 12065kevin.zimmerman at kitware.comhttp://www.kitware.com
>>>>>
>>>>>  On 05/13/2014 04:57 AM, Riya Paul wrote:
>>>>>
>>>>> Why I am not allowed to post some on the forum. Please let me know
>>>>> about it. I have posted my question three times and still it is not
>>>>> accepted yet.
>>>>>
>>>>>
>>>>>  On Tue, May 13, 2014 at 10:55 AM, <insight-users-owner at itk.org>wrote:
>>>>>
>>>>>> You are not allowed to post to this mailing list, and your message has
>>>>>> been automatically rejected.  If you think that your messages are
>>>>>> being rejected in error, contact the mailing list owner at
>>>>>> insight-users-owner at itk.org.
>>>>>>
>>>>>>
>>>>>>
>>>>>> ---------- Forwarded message ----------
>>>>>> From: Riya <riyaforms at gmail.com>
>>>>>> To: insight-users at itk.org
>>>>>> Cc:
>>>>>> Date: Tue, 13 May 2014 01:55:16 -0700 (PDT)
>>>>>> Subject: How to apply affine transformation without sheering ( 9
>>>>>> parameter instead of 12)
>>>>>>  Hello ,
>>>>>>
>>>>>> I am modifying the source code to do affine transformation. After
>>>>>> applying
>>>>>> the affine registration the output image was not so good. I was
>>>>>> expecting
>>>>>> more points and more clear image like my reference image.
>>>>>>
>>>>>>
>>>>>> I am new in itk programming and  I have very basic knowledge about
>>>>>> it. I
>>>>>> have already the source code where they are performing affine
>>>>>> transformation
>>>>>> ( without specifying the parameters) So basically IT is taking
>>>>>> completely 12
>>>>>> parameters including the shear / skew parameters. I think may be this
>>>>>> is why
>>>>>> the output image is kind of not good. I though If I will use 9
>>>>>> parameters
>>>>>> except the skew parameters then It may be improve the registered
>>>>>> output
>>>>>> image quality. Please help me how to do that.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> View this message in context:
>>>>>> http://itk-users.7.n7.nabble.com/How-to-apply-affine-transformation-without-sheering-9-parameter-instead-of-12-tp33917.html
>>>>>> Sent from the ITK - Users mailing list archive at Nabble.com.
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>
>
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