Re: How to get the color information?? (isColorLut and isPseudoColorLut do not help)

Posted by Xin ZHOU on Feb 05, 2009; 8:56pm
URL: http://imagej.273.s1.nabble.com/How-to-get-the-image-information-tp3693833p3693836.html

Hi, thanks a lot Joris.

Unfortunately this only solve half of my problem.
The question is : some grey-level images are saved as color_RGB. That's
awful.
So getType() shows that they are color images. But they are not.
The three values for each pixel are the same.

It there any clever way to identify the image type?

cheers, Xin

joris meys a écrit :

> try getType() from ImagePlus. If the return is 3 or 4, your image is in
> color.
> Kind regards
> Joris
>
> On Thu, Feb 5, 2009 at 5:31 PM, Xin ZHOU <[hidden email]> wrote:
>
>  
>> Wayne Rasband a écrit :
>>
>>    
>>> I'm using ij.jar for programming.
>>>      
>>>> How can I know one image is in color so that I can separate it from the
>>>> others??
>>>>
>>>>        
>>> Dear Xin,
>>>
>>> RGB color images use a ColorProcessor. The getRGB() of the ColorProcessor
>>> class returns the image as three byte arrays, which can be easily converted
>>> into three ByteProcessors.
>>>
>>> -wayne
>>>
>>>      
>> Hello, Wayne, and the others
>>
>> Thanks a lot for your answers.
>> But my question is GreyLevel images are mixed with color ones.
>> How can I separate them? If I use ColorProcessor, this means I know already
>> they are color ones.
>> I've tried the methods : isColorLut and isPseudoColorLut.
>> Surprisingly it doesn't work. It return false to all images, even color
>> ones.
>>
>> Any idea for that ??
>>
>> cheers, Xin
>>
>>    
>
>