Rendering with Inventor 2016

[Anonymous]

Good afternoon all,

I'm having a slight problem with rendering. I cannot get a good, decent render for the life of me. I have changed various setting (lighting etc)  and cannot improve the quality. In comparison, Inventor 2015 gave me good results that i liked.

As a side not i prefer the working model illustration compared to the redered image. I have attached both images for comparison.

Any help on the matter would be really appreciated.

PC specification:

intel core I7-4790 @ 3.6Ghz 

8GB corsair RAM

GeForce GTX 660

I know the graphics card isnt the best but it should produce a better finish than the one below. The image below has had 32 iterations.

Thank you.

[admaiora]

Hi Luke,

you can improve it a little choosing a higher raytracing pass.

[-niels-]

What exactly are you trying to improve?
If it's the grain in the picture, admaiora's post should help with that.
Inventor 2016 has a different render engine than 2015, so it'll probably take some fiddling to get it the way you want.
Did you use studio or is this a "realistic raytracing" image?

(Sidenote: both your and admaiora's pictures would've been great for the Friday pictures topic. 😉 )

[SharkDesign]

Even after 30 minutes there is still grain in your image Admaiora. This was never a problem in 2015. How do we get it to go away?

[Daniel248]

Hi Luke,

Unfortunately, there is no button to press for "make my model pretty" in Inventor - and never has been one, as far as I know.

To get a decent render it takes some time to choose and tweak material appearances, lighting and environment, and then a lot of processing power too – the more iterations, the better - this is what reduces the grain, like admaiora said.

I would choose a mix of finishes and textures that best suit the model: not too many highly polished chromes and high gloss surfaces - or the model will look like a collection of broken mirrors with horrible reflections bouncing everywhere, not too many dull and plain surfaces - or the model will look like an old Lego.

Tip:  Check how your chosen materials and appearances will look like at render time, by using the same lighting environment as you intend to use later on for rendering or raytracing. Remember you could adjust those Glossiness and Reflectivity sliders (whilst watching the effect that adjustment will have live, in Realistic + Ray Tracing mode) to suit your intentions and model. By doing so, you’ll avoid the ‘big surprise’ when pressing the Render button in Studio later on, or taking the model for the first time into Ray Tracing mode.

Two examples below - same CAD model & materials – different lighting: rendered in Inventor Studio @ 1920x1080 for 30 minutes, post-processed in GIMP (a free to download & use photo editor).

Intel i7-5960X CPU (16 Cores OC@4GHz)

32GB RAM Win7/64bit, 1TB SSD, PDSU2016

[SharkDesign]

Your images look nice, but again grainy.

In 2016 renders there was never that grain on them using traditional rendering methods.

[FrodoZhou]

If you're talking about Inventor Studio 2016, change the 'Render Image->Renderer->Lighting and Material Accuracy' from High and Draft should be helpful to get the grain refined more quickly. This is because the new rendering methods in Studio 2016 uses gradually global refine strategy which is different than before.

On the Render Output dialog of Studio 2016, when a rendering task is done with obvious grain, you can always resume the rendering by clicking the teapot button which is left to the Save button till you get desired result.

[Neil_Cross]

You could also maybe experiment with putting some focal adjustments on the camera, this can (depending on a lot of things) make the image less grainy and more realistic, obviously pro photographers use the bokeh effect to enhance imagery so you could try utilising that?

Shameless plug but I have some tutorials on this on my channel, depending on your current skill set you might be above these but maybe worth a look, you might pick something up from them:

There's a playlist there with a couple of others, some Showcase stuff, but like the others said... there is no magic button and the grainy effect improves the more ray tracing passes occur, and how fast that happens depends on your PC specs.

[Neil_Cross]

Haha yah, I forgot I said Inventor Studio was shi...not so good, and it really isn't, but it serves a purpose.  Fast forward to the very end for the final image if you want to see what that video was working towards, around 33:54 on the timer.

[SharkDesign]

The draft does give a better finish, although obviously at a lower resolution.

[SharkDesign]

Thank you everyone for your suggestions. I will try and remember to leave it on overnight and see what results I get.

I know there is no magic button, I've spent a lot of tie on the traditional method, but it seems like Autodesk were trying to make the process much simpler in this release.