4. Image data range

Image data range

  • H

    On 23/08/2015 at 03:48, xxxxxxxx wrote:

    User Information:
    Cinema 4D Version:   R14 
    Platform:   Windows  ;   
    Language(s) :     C++  ;

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    Hi folks,

    could someone clarify for me how I can get the data range of a given image? For instance, I have an image that ranges in colour values from 0-65535. How can I test for this data value range programmatically? I'm needing to get which data range the images are in, i.e. are they 0-255, 0-65535, 0.0-1.0.

    Cheers,

    WP.

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  • H

    On 23/08/2015 at 04:09, xxxxxxxx wrote:

    255 = 8 bits
    65535 = 16 bits
    float = 32 bits "and it can go out of range (0.f - 1.f)"

      
BaseBitmap yourBitmap = ...;  
Int32 bits = yourBitmap.GetBt();
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  • H

    On 23/08/2015 at 18:10, xxxxxxxx wrote:

    Hi Mohammed,

    that's what I thought. I'd been using COLORMODE to get the mode flag, but an experiment I ran was giving me an image with 0-65535 an 8 bit data range. It must be something else. I'll need to keep digging.

    Thanks,

    WP.

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  • H

    On 24/08/2015 at 07:59, xxxxxxxx wrote:

    Hi,

    I think, GetBt() is more what you'll want.
    There's also a Python example script, how to use it in the Python SDK examples: Copy32BitImage.py
    It should be easily transferable to C++.

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