Patent ID: 8208011

Claim:
A method of computing a display value to be provided to a stereoscopic display apparatus comprising means for producing a display, the stereoscopic display apparatus comprising laterally separated picture elements in a first plane and optical directory means comprising a group of optical directory elements each of which is associated with a respective group of picture elements, the optical directory means overlying the picture elements in the first plane for directing the outputs of the picture elements in mutually different angular directions relative to the first plane, the method comprising: determining a first intermediate value from a 3-D representation on basis of a first one of the angular directions and coordinates of a first one of the picture elements; determining a second intermediate value from the 3-D representation on basis of a further angular direction relative to the first plane and the coordinates of the first one of the picture elements; and combining the first intermediate value and the second intermediate value to the display value, the display value related to the particular output of the first one of the picture elements; wherein the further angular direction corresponds to a second one of the angular directions, the first one of the angular directions determined by a first spatial position of the first one of the picture elements relative to its associated first one of the optical directory elements, the second one of the angular directions determined by a second spatial position of a second one of the picture elements relative to its associated second one of the optical directory elements.