4D light field cameras
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsRamesh Raskar, Amit Kumar Agrawal
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Abstract
A camera acquires a 4D light field of a scene. The camera includes a lens and sensor. A mask is arranged in a straight optical path between the lens and the sensor. The mask including an attenuation pattern to spatially modulate the 4D light field acquired of the scene by the sensor. The pattern has a low spatial frequency when the mask is arranged near the lens, and a high spatial frequency when the mask is arranged near the sensor.
Claims56
An apparatus for acquiring a 4D light field of a scene, comprising:
- a lens;
- a sensor;
- and
- a mask arranged in a straight optical path between the lens and the sensor, the mask including an attenuation pattern to spatially modulate the 4D light field acquired of the scene by the sensor.
A method for acquiring a 4D light field of a scene, comprising the steps of:
- passing a 4D light field through a lens to a sensor along a straight optical path;
- and
- modulating the 4D light field with an attenuating mask arranged in the optical path between the lens and the sensor.
A method for acquiring a 4D light field of a scene, comprising the steps of:
- modulating a 4D light field with an attenuating mask arranged in a straight optical path between a lens and a sensor;
- and
- sensing the modulated 4D light field by the sensor to produce an input image encoding the 4D light field.
Dependencies are inferred from the claim text.