Calibrating hdr images with video footage for compositing

[madbrowser]

I was wondering if any one had experiance or advise regarding hdr image based models and compositing in a real world scene recorded on a Digibeta video camera. The problem that my group is having, is the hdri’s are taken on a kodak digital camera and the footage from the video camera don’t match colour wise. When the 3d models with the hdri references are placed in the scene the colour is off. Is there anyway of calibrating the two. The idea of using a colour chart to match the colours manually was brought up. Any advise would be great.

Jay

[eltopo]

💡 there are two steps to do that. To get an optimun result you have to use both. From what I understand you are using still images. Those have to be fixed in Photoshop. Turn the color mode to LAB and fix the luminance from it. This should help. The other part, integrating 3D with Video the key is blending. Try to fix them and leave them as close as possible. Then on top of the video and 3d layer, create another layer with a colour tone that you want to give the clip, e.g. blue. Give this layer some transparency and try different transfer methods (multiply, burn, dodge, luminance, etc). Because this layers covers both footage, it makes them look like one. This trick works in photoshop as well as compositing software. I have used it in Photoshop, After Effects and Inferno and seen it in Shake, so basically it works everywhere.

[madbrowser]

thank you for the speedy reply. We are using video as well altough your advise should still help. I’ll try it out using after effects or combustion and get back to you. As long as the 2 sources can be blended together for a seemless composite then the probelm is solved. Thanks

Jay

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