[Insight-users] Image Origin top left or bottom left?

[Bill Lorensen]

index(0,0) of a jpeg image accesses the first pixel of the jpeg image.

On Tue, Nov 4, 2008 at 10:42 AM, Marta Schmidt <t_s_80 at gmx.de> wrote:
> Hello,
> I'm quite confused about the image origin in itk. The Software Guide says,
> that the origin (index(0,0)) is bottom left and I read it in some
> google-searching results also. However, if I load an Jpeg with the
> ImageFileReader, change the index pixel [0,0] to another value and write it
> back into a file, the pixel will appear top left. Same happens if I use the
> RegionOfInterestImageFilter with index 0,0. I always get the image region
> top left. Unfortunately, my search didn't bring any satisfactory results.
> Do I do anything wrong? Or is the Software Guide just unclear?
> Best regards
> Marta
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