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Fitting in with real world items.
show user profile  ugtv.org
I have a video I shot with my iPhone and the 3D images I'm adding stick out because they don't match the less than ideal optics of the iPhone.

Is there a way to introduce camera imperfections into my 3D renderings so it all has the same feel?
read 423 times
9/1/2012 8:38:47 PM (last edit: 9/1/2012 8:38:47 PM)
show user profile  ScotlandDave
A couple of things to try:

Find out the focal-length/FOV of the iPhone camera, and match your virtual camera to it.

Look at depth of field ( foreground/background blurring as a result of the cameras aperture ) and match that - but as the iPhone cam is such a small lens i`m guessing it`s pretty much sharp from back to front..

Next thing is the lighting setup you`re using - try to mimic real-life light sources as they are in your photograph. Greyscale Gorilla did a tutorial some time ago that uses the iPhone to capture a panoramic image that can be used as a source of IBL ( image based lighting ) - similar to the technique used with HDRI lighting. That`s something to research/google..

Materials are important as is final colour-grading. Really look at your materials and colour values and keep them in check, as per reality. A CGI teapot with a bright red fully reflective material and black shadows isn`t going to look good in a photorealistic environment is it? Also remember everything can be tweaked in post ( ie Photoshop/Aftereffects ) so colours, saturation, etc can be matched up more easily..

That`s about it off the top of my head :)




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read 408 times
9/1/2012 11:22:23 PM (last edit: 9/1/2012 11:22:23 PM)
show user profile  ugtv.org
Thanks for the ideas. One thing that helped a lot was getting into Sunlight systems and the Matte/Shadow material for the shadows. Next steps will be me playing around with the textures.
read 396 times
9/2/2012 12:49:19 AM (last edit: 9/2/2012 12:49:19 AM)
show user profile  Endycool
If you are looking foward to create more videos using this method, you should look for some tracking software, like pftrack, it automatically tracks the video and creates an identical camera en your 3d scene effortless.
read 338 times
9/5/2012 6:31:07 AM (last edit: 9/5/2012 6:31:07 AM)
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