Interactive video display system

A method for obtaining an image of a human user wherein the human user is adjacent to a displayed image, the method comprising

• using light at a first wavelength to illuminate the human user;
• using a camera responsive to the light at a first wavelength to detect the image of the human user;
• and
• using light at a second wavelength, different from the first wavelength, to generate the displayed image.

A method for computing an interaction of an object with a video item, the method comprising

• using a processor to determine a gradient for the object;
• using a processor to determine a boundary for the video item;
• and
• identifying an interaction by using the gradient and the boundary.

A system for detecting an object and generating an output in response, the system comprising

• a first source, for outputing electromagnetic energy in a first wavelength range;
• a detector for detecting a reflection of the first source of electromagnetic energy from an object;
• a processor coupled to the detector for using the detected reflection to generate a display signal;
• a second source, for outputing electromagnetic energy at a second wavelength range, wherein the second source generates a visible display in response to the display signal, wherein the first and second wavelength ranges are different;
• and
• audio output for outputing audio.