Altus does NOT support JPEG, PNG, WebP, etc images. Altus needs as much information as possible from a renderer to create the best quality output, and using lossy image formats will create suboptimal outputs that we don’t stand by.
OpenEXR images can be 16-bit floating point (half) or 32-bit floating point (float) images. 8-bit integer images are not supported.
All of Altus’ internal processing is done in 32-bit floating point. If 16-bit floating point images are given, images will be truncated to 16-bit when written out.
Deep EXR images are partially supported, if they have been saved “flat” with averaged samples. Most renderers output this by default.
Multi-part EXR images (e.g. using deep samples from deep EXRs, or stereoscopic images) are not supported.
Multilayer EXR images are supported; see Multichannel and Multilayer EXRs.
If there are additional HDR image formats you would like Altus to support, please contact support.