How to mix overlay svg images from AnnotateImage

[Astrocava]

Hi all!

I'm experimenting with the AnnotateImage script. As some labels are overlapping I choose to generate a svg overlay that later I edited in inkscape. But how I can put it together again?. It seems the svg consist only in alpha channel. I tried access this channel using [3] in pixelmath but without success.  Sure there is an easy solution...any help?

Thanks in advance,

sergio

[Andres.Pozo]

After editing the SVG in Inkscape you can export the annotation to PNG. Then you can blend the PNG using PixelMath:
(1-annotation[3])*$T+annotation[3]*annotation.

[Astrocava]

After editing the SVG in Inkscape you can export the annotation to PNG. Then you can blend the PNG using PixelMath:
(1-annotation[3])*$T+annotation[3]*annotation.

Thanks Andres for answering but i got this error:

Code: [Select]

PixelMath: Processing view: NGC7331
Executing PixelMath expression: combined RGB/K channels: (1-annotation[3])*$T+annotation[3]*annotation: done
*** Error: Channel index out of range: annotation[3]
<* failed *>

[Andres.Pozo]

Thanks Andres for answering but i got this error:

Code: [Select]

PixelMath: Processing view: NGC7331
Executing PixelMath expression: combined RGB/K channels: (1-annotation[3])*$T+annotation[3]*annotation: done
*** Error: Channel index out of range: annotation[3]
<* failed *>

The PNG must have alpha channel.

[Astrocava]

Solved. As the overlay is greyscale (not RGB), I must use [1] when referring to alpha channel.

Thanks Andrés for the help and for this fantastic script.