Patent ID: 7976159

Claim:
A method for providing continuous optical density control values for optimizing 3D effects on Pulfrich Filter Spectacles with two optical density continuously adjustable lenses, comprising: setting a default optical density value for the two lenses in neutral state; obtaining a motion vector value of a prominent image target in a sequence of frames in a 2D video; obtaining a luminance value of each frame in said sequence; calculating an optical density adjustment value on each frame comprising the steps of: computing a retina delay based on the motion vector value for 3D effects; computing an adjusted luminance value to achieve said retinal delay based on the luminance value; computing an optical density value for a lens to achieve said adjusted luminance value; computing the optical density adjustment value based on the default optical density value; and composing optical density adjustment values on a sequence of frames in the 2D video as continuous optical density control values for the Pulfrich Filter Spectacles.