Friday, November 30, 2012

Lighting

Lighting experiment conducted by myself was particularly about mental ray lights.Especially 'mrAreaspot' light combined with a skylight and a volumetric light and the results were quite amazing with the addition of global illumination. The full radio city and soft shadows were obtained as if in a real warehouse scene by changing the settings in the Final gather bounce values and sampling rate multiplier values.

Camera Projection

Camera projection is a technique by which a camera is allowed to project a texture on to a grid surface which in a 3D surface and the same camera is cloned and is made an animated camera.The animated camera moves in a controlled space in and around the main static projection camera and thereby allowing the viewer to feel that the original 2D scene upon which it was based is actually a 3D environment.
The wire frame render of my 3D mesh can be seen below.




Friday, October 5, 2012

Rotoscopy 3Rd Oct 2012

Rotoscopy done using After Effects.













Roto created using 10 masks in AfterEffects.
One each for shirt,Head and Pants.
Arm split up in to 4 mask*2

        FINAL RENDERS

      ALPHA FG MATTE





          ALPHA BG MATTE




ROTO SHAPE WITH ALPHA




MERGED RESULT

Tuesday, October 2, 2012

HDRI Lighting 29th Sept 2012

Brian took me through various stages of HDRI Lighting which included of capturing all the exposure details pertinent to a shot filmed using a chrome ball and a camera on a tripod.First capturing images from three angles with a camera mounted on a tripod and then clicking on pics with a chrome ball kept at the center of the shot scene.The exposures of each shots needed to be adjusted from low to high on each of the three pictures photographed.After that using Photoshop to merge those captured photographs to singe merged HDRI images.Then using HDRI shop to unwrap those chrome ball shots to flat images and then again using Photoshop to create one single HDRI shot which can be used as an environmental map for controlling exposure on 3D elements in a scene.

I got hold of some free HDRI chrome ball samples and tried out some settings in 3DS MAX and the results were quite good.Scene included a camera circling around a drop of water in air whcih was lit by a light and with environmental map as the HDRI Image which i processed using HDRShop and Photoshop