Re: Integrated Density Unit help? please

Posted by Thomas Boudier on Jun 19, 2008; 3:29pm
URL: http://imagej.273.s1.nabble.com/Integrated-Density-Unit-help-please-tp3695786p3695789.html

ok I understand your trouble. The area here corresponds to the number of
pixels and does not take into account the spatial calibration. So the
integrated density has the unit of pixel values, that is to say gray
levels.

Thomas

> Thanks for reply. I have read the documentation about integrated density.
> There it is said that it is sum of pixels values inside the object but I
> scaled pixels as µm and there is written also that it is equal to the
> product of area and mean gray values. That’s why I was confused about the
> unit. Because all the images used are the scaled images. Should I consider
> this integrated density without unit in my case or should I consider it as
> pixels which are µm in my case. I hope that I was a little bit clear in my
> question.
>
> Cordially.
>
> Kashif ZEESHAN
> (00 33 6 74 90 18 10)
> Doctorant, Biopesticide Group,
> Laboratoire Universitaire de
> Biodiversité et d'Ecologie
> Microbienne (LUBEM),
> 6 Rue de l'Université,
> 29334, Quimper Cedex,
> France
> -----Message d'origine-----
> De : ImageJ Interest Group [mailto:[hidden email]] De la part de Thomas
> Boudier
> Envoyé : jeudi 19 juin 2008 16:23
> À : [hidden email]
> Objet : Re: Integrated Density Unit help? please
>
> Hi Kashif,
>
> Maybe you should have a look to the documentation ;-) , Integrated
> density is the sum of pixel values inside the object, it is not a
> geometrical measure like area or volume.
>
> Thomas
>
>  
>> HI experts
>>  
>>
>> I need some help about Integrated Density. My scale is in µm. Now I want
>>    
> to
>  
>> know what will be the unit of Integrated Density? For Area, it is µm2 and
>> for Feret’s Diameter µm and for circularity, no unit at all. Can you
>>    
> kindly
>  
>> help me in this regard?
>>
>>  
>>
>> Cordially.
>>
>>  
>>
>> Kashif ZEESHAN
>>
>> (00 33 6 74 90 18 10)
>>
>> Doctorant, Biopesticide Group,
>>
>> Laboratoire Universitaire de
>>
>> Biodiversité et d'Ecologie
>>
>> Microbienne (LUBEM),
>>
>> 6 Rue de l'Université,
>>
>> 29334, Quimper Cedex,
>>
>> France
>>
>>  
>>
>>
>>  
>>    
>
>
>  

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   Thomas Boudier, MCU Université Paris 6,
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