I need to display 14 Layers of 1bit tif Files (black and white - 30000x30000 pixel each - probably bigger in future)
Displaying a single Layer is no problem, but I also need to display merged layers (depending which Layer is selected by User)
Currently I merge the selected Layers by creating a new Bitmap which contains the data of the selected Layers. (I already use Scanline to copy the data faster - but because of the sheer size of the images it still is not as fast as I would like it)
Is it possible to load the 14 Layers in ImageEnView (as black/white tif; 1bit) and merge(display) the layers in a way that the white background is transparent (for all layers) and the black pixel of all Layers are seen on screen?
I only achived to set the opacity of one layer (black and white pixel together) but I'm searching for a method for all Layers.
If you have set the white background of each of your image layers to transparent, then when you merge all the layers only the black pixels should remain. Are you seeing something different?
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Transparent Layer
Posted - Feb 03 2015 : 04:39:51
