I am fairly new to Chief & even more so to ray tracing. I am attaching a standard rendering (1), a physically based (ray trace) (2), and two CPU ray traces ( one with 1 hour/38 passes, the second with 3 hours). It appears to have a foggy haze over the image. Once you zoom into the image, it appears to be grainy also. How can I brighten and sharpen these images?
I have experience with Twin Motion, Photoshop, Revit, etc. but I have seen some wonderful renders out of Chief. I would love to get there. Any tips?
Here's a link to a great article that shows how Real Time Ray Tracing is starting to enter the market. It's getting closer with graphic card designers looking to make it happen in an "affordable" way.
I just came across an interesting video (not specific to Chief) entitled "Ray tracing explained: The future of hyper-realistic graphics ". I thought it was interesting enough to post here (not sure if this was the right forum or not). If you have 10 minutes to kill while eating lunch check it out.
For those interested in exploring CA Ray Tracing Techniques.
From the CA sample gallery I downloaded the "Zero Sum Kitchen" plan. Other than reducing the width and height to 1200 X 618 I ran a Ray Trace as per CAs' settings. The scene took 1 hour and 54 minutes to reach a point were I could not detect any discernable graininess.
Here is the scene after 1 hour & 54 minutes, needed about 30 passes.
I reworked the lighting and altered some of the material properties. This ran in 1 minute & 44 seconds, only needed 5 passes.
Here it is at 4800 X 2472 if you wish to zoom in for closer examination. Took 28 minutes to run 6 passes.
The biggest problem with the CA plan are the point lights, in fact 18 of the 24 lights were points, even the ceiling recessed fixtures. They had Photon Mapping turned "ON" and even so the stainless steel rendered poorly. I changed all the lighting to spots and turned off the Photon Mapping, note that even with the Photon Mapping turned off the stainless steel rendered quite well, contrary to the common belief that one needs Photon Mapping turned on to render these metals.
That horrible orange colour cast has been eliminated, the scene now has an improved sense of depth, detail and colour balance. And it runs really fast.
Key words to define before reading the Reference Manual or watching any Ray Tracing videos is to get the following words well understood and defined for you:
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