Alpha channel and PNG
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How to implement alpha blending in OpenCV (C++ /Python)?
I would also like to save to PNG without compression, is it possible? Michael Schmid Re: Alpha channel and PNG. In reply to this post by Sebastien. Hi Michael, Thanks for your help. I am mostly interested in saving RGBA images to disk from ImageJ, not really displaying or creating them it seems that the macro I previously posted writes in the alpha channel, even if the image is not properly displayed.
Is there a way to save such images without writing a specific plugin?
Norbert On Gabriel Landini. Hi Norbert, That is a very nice animation. Just an idea: it would be interesting to have an option so the slices mix additively when overlapping.
Thanks for sharing this. Hello Norbert, Thank you, this is a good trick.
Unfortunately it does not really help me as I wanted to use the alpha channel of an RGB image to store an 8-bit image, save the resulting RGBA image to file, process it outside ImageJ and finally load the result and split the 4 components in ImageJ. You cannot do that with macros as I do not tire of pointing out, the macro language is very nice in that it is simple, but sometimes you need to access the full Java API, i.
What is alpha blending?
Stephan Saalfeld. Great, exactly what I was looking for! Thank you! On I got it working both in Fiji and in the ImageJ Beanshell window.
Alpha channel and PNG
And, even better, this could become an integral part of ImageJ whenever the user attempts to save a 4-slice hyper stack as. In the new version, I simply set the flag to my needs.
Further, I wait how this thread will develop because full support for the alpha channel would considerably simplify my "perspective" project. It requires the ImageJ 1. The 1.
OpenGL - transparency (alpha blending)
ImageIO; import java. In reply to this post by vischer. In reply to this post by Gabriel Landini.
In reply to this post by Sebastien Hi Michael, Thanks for your help. In reply to this post by Sebastien Hello Norbert, Thank you, this is a good trick.
In reply to this post by Sebastien Great, exactly what I was looking for! Starting with the ImageJ 1. Free forum by Nabble. Edit this page.