[Insight-users] About voxel counting for Binary image

[Xiaopeng Yang]

Hi Stu,

You are right. I have solved the problem. Thank you for your help!

Best regards,
Xiaopeng

-----邮件原件-----
发件人: Stuart Golodetz [mailto:itk at gxstudios.net] 
发送时间: 2010년 12월 17일 금요일 오후 8:36
收件人: Xiaopeng Yang
抄送: insight-users at itk.org
主题: Re: [Insight-users] About voxel counting for Binary image

Hi Yang,

Possibly a silly question, but you are calling 
nrOfVoxelsInMask->Update(); *before* the GetSum() right? The strange 
value you're seeing looks like an uninitialized one to me -- bearing in 
mind that 512x512x226 is roughly 0.59e+0008, so that voxel count can't 
possibly be right.

Cheers,
Stu

On 17/12/2010 08:57, Xiaopeng Yang wrote:
> Hi Matt,
>
> It works now. Thank you. But the number of voxels I got is extremely large: 9.85281e+008. The image size is 512*512*226. The images are binary images. Do you know why?
>
> Xiaopeng
>
> -----邮件原件-----
> 发件人: insight-users-bounces at itk.org [mailto:insight-users-bounces at itk.org] 代表 Matt McCormick
> 发送时间: 2010년 12월 17일 금요일 오후 5:28
> 收件人: insight-users at itk.org
> 主题: Re: [Insight-users] About voxel counting for Binary image
>
> Hi Yang,
>
>>
>> nrOfVoxelsInMask->SetInput(filterBM->GetOutput());
>>
>> std::cout<<"Number of Voxel"<<": "<<  nrOfVoxelsInMask->GetSum()<<std::endl;
>>
> It looks like you forgot to call
>
>    nrOfVoxelsInMask->Update();
>
> here.
>
> Regards,
> Matt
>
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