High contrast structured light patterns for qis sensors

A structured-light system, comprising:

• a camera that detects an image of a scene onto which a reference structured-light pattern has been projected, the reference structured-light pattern comprising a base light pattern comprising a row of a plurality of sub-patterns extending in a first direction, each sub-pattern being adjacent to at least one other sub-pattern, each sub-pattern being different from each other sub-pattern, each sub-pattern comprising a first predetermined number of portions in a sub-row and the first predetermined number of portions in a sub-column in which the first predetermined number is an integer, each sub-row extending in the first direction and each sub-column extending in a second direction that is substantially orthogonal to the first direction, each portion further comprising a black portion or a white portion, a size of each black portion in the first direction being larger than a size of each white portion in the first direction, and a size of each black portion in the second direction being larger than a size of each white portion in-the second direction.

A structured-light system, comprising:

• a camera that detects an image of a scene onto which a reference structured-light pattern has been projected, the camera detecting a base light pattern that has been reflected off an object in the scene and that includes a disparity with respect to the reference structured-light pattern, the reference structured-light pattern being formed from the base light pattern, the base light pattern comprising a row of a plurality of sub-patterns extending in a first direction, each sub-pattern being adjacent to at least one other sub-pattern, each sub-pattern being different from each other sub-pattern, each sub-pattern comprising a first predetermined number of portions in a sub-row and the first predetermined number of portions in a sub-column in which the first predetermined number is an integer, each sub-row extending in the first direction and each sub-column extending in a second direction that is substantially orthogonal to the first direction, each portion further comprising a first-type portion or a second-type portion, a size of each first-type portion in the first direction being larger than a size of each second-type portion in the first direction, and a size of each first-type portion in the second direction being larger than a size of each second-type portion in the second direction.