[Insight-developers] Hisotgramming problems with large images

[Richard Beare]

The Otsu multiple thresholding does seem to work with these images and itk 4.0.

The histogramming runs, but the bounds setting appears to get ignored.
Will check this further

On Wed, Mar 2, 2011 at 1:23 AM, Luis Ibanez <luis.ibanez at kitware.com> wrote:
> Hi Richard,
>
>
>                      What ITK version ?
>
>
> ---
>
> I believe this was fixed a while ago for ITKv4.
>
>
>     Luis
>
>
> -------------------------------------------------------
> On Tue, Mar 1, 2011 at 5:50 AM, Richard Beare <richard.beare at gmail.com> wrote:
>> Hi,
>> I'm playing with some largish images (1395 x 1130 x 562) which contain
>> small floating point values (0->6e-7). I'm experimenting with
>> histogramming methods (otsu thresholding + creating my own histogram
>> based on ImageHistogram2 in the examples), but get the following
>> error:
>>
>> itk::ERROR: DenseFrequencyContainer(0x514a0a0): Frequency container
>> saturated for Instance
>>
>> Which seems to result from the number of entries in a bin being larger
>> than the largest integer a floating point value is able to represent.
>> Is there any easy way around this?
>>
>> I was hoping to avoid messing around with scaling and subsampling at
>> these early stages.
>>
>> Thanks
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>