[Insight-users] casting question

[Martin Urschler]

hi

If you want to cast a vector pixel type (RGB color is a vector entity 
with 3 entries, one for red, one for green, one for blue, each of these 
entries being unsigned char) to a scalar pixel type like float you have 
to somehow provide a casting method since (I hope) there are no default 
ways how a vector is cast to a float

however you will have the problem how to define this cast... how do you 
combine 3 unsigned char values to form a single float?

perhaps you should explain in more detail what you intend to do in your 
application...

greetings,
Martin

smythek at u.washington.edu wrote:
> Hi,
> 
> I have 2 color images that are 24bpp each, so I believe they are of type 
> RGB.  I read in the images as InputPixelType=RGBPixel<unsigned char>, 
> then recast it to just PixelType=float so I can run the PasteImageFilter.