HowTo check if pixel is into a ROI

[Andrea Tombesi]

I have written a short macro to calculate the surface of a solid in a stack
of images (ad example acquired with confocal)

I need to work also with ROI and i am looking (before write it
myself) for a function that check (eg return true) if a pixel (x,y) is
inside the ROI (also freehand roi)

anyone can help me?

tanks.

[Gabriel Landini]

On Thursday 31 May 2007 10:30:48 Andrea Tombesi wrote:
> I have written a short macro to calculate the surface of a solid in a stack
> of images (ad example acquired with confocal)
>
> I need to work also with ROI and i am looking (before write it
> myself) for a function that check (eg return true) if a pixel (x,y) is
> inside the ROI (also freehand roi)

You can test this in a plugin (there is a method contains(x,y) that you can
use with a ROI).

The slow, and lazy way to do it with a macro is to:
duplicate the image
threshold it (ie create a mask)
test the colour of the pixel of interest, if background it is outside,
otherwise it is inside.

Cheers,

G.