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Hi,

I tested to make a hdr image with Maxwell+HDR SHOP.

First, make a simple scene , and set a ball object with mirror material
center of the scene.


Next, I renderd mirrorball with MaxwellRender.
And saved images several ss(ss1/4 ~ ss1/4000).


In HDR SHOP, imported renderd images and transform to LightProbe format. and merged.


Last, transformed LightProbe to Latitude/Longitude format in HDR SHOP.


and Here's test render. Only HDR environment.(no Emitter)

640x480 S.L. 15, 1h test.

sorry, my bad English.

toshi

Very nice! Wish I had thought of that.

Thanks! But why did you render two views and merged them?

Mihai wrote:Thanks! But why did you render two views and merged them?

Thank you, Mihai.

the reason here.


toshi

I see But when you merged them, did it automatically remove the bad areas, or did you have to do some further adjustments?

Mihai wrote:I see But when you merged them, did it automatically remove the bad areas, or did you have to do some further adjustments?

Sorry, I forget to write about mask file.
I made mask file in Photoshop.


toshi

Thanks Toshi .

Smart! Good stuff.

Cool, thanks.

Cool idea!

Maybe one for the wishlist, a little like 3DS Max panorama cam... just tell Maxwell to output a corrected HDR panorama.

Dave

Toshi, I'm wondering if you can help me. I'm following your methods but can't remove the white area or distortion, that you removed by merging your 0' & 90' images.

I've made a mask as per your directions, but I either get a white area at the far ends of the long/lat map, or bad distortion.

Also when I merge the images, do I use the calculate function A+B, or another method? A+B gives a double exposure.

Saving a .hdr from MXCL works fine as a mirror ball hdri, but when converted to long lat for re-use in MXST, the white areas or distortion appear.

Thanks in advance,

Tim.

Hi,Tim.

Did you crop your mirror ball image before transform to LightProbe?

If you didn't, please select circle area and crop.

Sorry, I don't know much about HDR Shop.

Please see HDR Shop Tutorial.

http://gl.ict.usc.edu/HDRShop/tutorial/tutorial5.html

toshi

Great job Toshi. Just wondering though: since Maxwell outputs in floating point you dont' really need to save out all the various shutter speed versions do you? Just save the render as .hdr format and bring that into HDR shop or pshop or whatever.


I have done this using Mental Ray and the built-in Lume shader for doing 360 pans, and I just used the floating point render. Should work here no?


b

simmsimaging wrote:Great job Toshi. Just wondering though: since Maxwell outputs in floating point you dont' really need to save out all the various shutter speed versions do you? Just save the render as .hdr format and bring that into HDR shop or pshop or whatever.

Yes. Now It's easy to save .hdr in mxcl.
But when I wrote this tutorial, Maxwell was v1.0 or v1.1.
I coudn't save .hdr format in mxcl.

Thank you, simmsimaging.

toshi

lol - I didn't even look at the date - sorry!

b