I have a 24 bit alpha (bmp) that when I import into ZBrush appears to contain noise even though it doesn’t. See attached picture of alpha image and alpha drawn on image plane. This is very annoying. How can I import the alpha so it appears clean and smooth?
I’m also having problems with ZBrush reading 16 bit gray psd images. The preview looks black and a wierd displacemnt is applied when trying to add it.
Alpha is either 8,16 or 32 bits gray scale image, 24 bits is usually an 8bit-per-channel RGB image.
If this does not help, please post more images and information about the steps that you have taken.
The issue with the 16bit gray psd appears to have something to do with CS4. I converted the same 24bit bmp to 16bit gray in CS3 and ZBrush imported with out problem (other than the noise being applied to the alpha).
This is image is much improved, but there are some faint lines that shouldn’t be there. Here are the steps. I applied a gradient map to an object in 3ds max then UV mapped the object from the side so the top of the object would be lighter and the bottom darker. I rendered to file PNG grayscale 16bit. Opened the PNG file in Photoshop CS3 (something screwy with CS4, see post above) and saved as PSD grayscale 16bit. Imported the PSD as alpha into ZBrush.
It looks like most of my problems are related to Photoshop CS4. I’m running the 64bit version on Vista Ultimate 64.
I think the faint lines in the last image I uploaded have something to do with the renderer antialiasing and filter maps.
Thanks for you help Support 