[ImageJ-devel] Overlays, cut and paste

[Lee Kamentsky]

What's happening here is this:
Cut and paste are currently ImageJ 1.0 functions.

In the legacy layer, I run the ImageJ 1.0 plugin, ThresholdToSelection 
with a ByteProcessor that holds the mask. For now, I'm flattening the 
mask rather than trying to distribute it among different planes in the 
stack, mostly because I don't know how any of that works. So 
ThresholdToSelection makes a composite ShapeROI composed of lots of 
polygons and that becomes the ImagePlus's ROI.

Going in the other direction, some of the objects are polygons and some 
are freehand rois. Each of them is transformed into its own overlay, so 
it's as if the original overlay was broken into pieces.

The legacy layer is very challenging. On the surface, a composite ROI 
might seem to be a union of polygons and beziers that are found by using 
the path iterator, but it's more complicated since some of them are 
subtractions placed on top of a larger shape (that's how you get a hole 
in something). On top of that, there's an issue of intent. Sometimes the 
user has drawn two rectangles and the composite is intended to be 
decomposed into two rectangles. But in cases such as this, the composite 
was never intended to be decomposed and should be rendered as a bitmask 
in ImageJ 2.0.

Hope you all understand why it's all not quite working yet.
--Lee

On 6/9/2011 3:41 PM, Grant B. Harris wrote:
> For anyone who is unaware, Lee committed some nice overlay stuff 
> today.  I tried it out and I found something interesting... Just for 
> the heck of it, I selected the thresholded binary overlay in the 
> OrganOfCorti image.
> and I copy/paste-ed to a 32-bit ramped NewImage, and I got this:
> It took a while, but it drew all those overlays into the image.
>
> Is this what it is supposed to do?
>
> -- Grant
>
>
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