Patent ID: 8531458

Claim:
A method of determining a pointing object position for three-dimensional interactive system, adapted for an interaction between a pointing object and a three-dimensional interactive display, wherein the three-dimensional interactive display comprises an optical sensor array and a barrier, the optical sensor array comprises a plurality of first optical sensor rows and a plurality of second optical sensor rows, the first optical sensor rows and the second optical sensor rows are alternately arranged along a first direction, each of the first optical sensor rows as well as each of the second optical sensor rows comprises a plurality of optical sensors arranged along a second direction different from the first direction, the barrier is disposed spaced from the optical sensor array and at a light-sensing side of the optical sensor array, the barrier comprises a plurality of barrier strips arranged along the first direction, and each of the barrier strips extends along the second direction; the method comprising the steps of: acquiring a first detected light intensity distribution of the optical sensors of the first optical sensor rows and a second detected light intensity distribution of the optical sensors of the second optical sensor rows; obtaining a first light-shading intensity maximum value and a second light-shading intensity maximum value respectively according to the first detected light intensity distribution and the second detected light intensity distribution; and determining a positional information of the pointing object in a third direction by use of a positional distance between the first light-shading intensity maximum value and the second light-shading intensity maximum value in the first direction, the third direction being different from the first direction and the second direction.