I have a bunch of images like this:
And I am looking to reconstruct them in a 3D model. Loading the data into Paraview, I am able to do so if I use a color map (enable Map Scalars & Ray Tracing), resulting in:
However, the color data is important. If I uncheck the Map Scalars on my original dataset, I get an error that I only have 3 channels, not 4 (RGB vs RGBA), when I append it with
convert -alpha on or
convert -alpha set, I don’t see anything. Finally I manged to get the original colors in by removing the black color with
convert -alpha copy, which results in images like:
But, when I load them into paraview, my volume rendering looks like this (cropped volume in half to illustrate):
Even though there should be no black anymore as its removed from the image data, its showing up in the volume.
- (How) can I disable the black filling? Is there somethings as threshhold I can use here?
- If not with Paraview, how could this be done with VTK?
My endgoal is to load into blender with BVTK