1. A method comprising: determining an optical path of light forming a floating image on a display plane; providing infrared (IR) illumination to the display plane with structured light through the optical path to automatically align a region of the IR illumination and a region of the floating image, wherein the structured light is structured in one of a position space and an angle space, employing one or more IR absorbing dyes printed over an illumination layer in close proximity to the display plane corresponding to the floating image, to provide the structured light in the position space; employing a holographic flat imager to project an IR pattern in the angle space; and providing position sensing of the floating image through a sensor employing stereo vision to enable user interaction with the floating image in response to the sensor detecting the aligned region of the IR illumination.