Thin form factor computational array cameras and modular array cameras
Systems and methods in accordance with embodiments of the invention implement modular array cameras using sub-array modules. In one embodiment, an X×Y sub-array module includes: an X×Y arrangement of focal planes, where X and Y are each greater than or equal to 1; and an X×Y arrangement of lens stacks, the X×Y arrangement of lens stacks being disposed relative to the X×Y arrangement of focal planes so as to form an X×Y arrangement of cameras, where each lens stack has a field of view that is shifted with respect to the field-of-views of each other lens stack so that each shift includes a sub-pixel shifted view of the scene; and image data output circuitry that is configured to output image data from the X×Y sub-array module that can be aggregated with image data from other sub-array modules so that an image of the scene can be constructed.
1. An X×Y sub-array module comprising:
an X×Y arrangement of focal planes, wherein:
X and Y are each greater than or equal to 1;
each focal plane comprises a plurality of rows of pixels that also form a plurality of columns of pixels; and
each focal plane does not include pixels from another focal plane; and
an X×Y arrangement of lens stacks, the X×Y arrangement of lens stacks being disposed relative to the X×Y arrangement of focal planes so as to form an X×Y arrangement of cameras, each of which being configured to independently capture an image of a scene, wherein each lens stack has a field of view that is shifted with respect to the field-of-views of each other lens stack so that each shift includes a sub-pixel shifted view of the scene;
image data input circuitry that is capable of receiving image data from a separate sub-array module; and
image data output circuitry that is capable of aggregating image data from the X×Y sub-array module with image data received via the image data input circuitry from a separate sub-array module.
2. The X×Y sub-array module of claim 1 , wherein X is 1.
3. The X×Y sub-array module of claim 1 , wherein X and Y are each greater than 1.
4. The X×Y sub-array module of claim 1 , wherein the arrangement of cameras are embodied within a single monolithic structure.
5. An M×N array camera comprising:
a plurality of X×Y sub-array modules, each comprising:
an X×Y arrangement of focal planes, wherein:
X and Y are each greater than or equal to 1;
each focal plane comprises a plurality of rows of pixels that also form a plurality of columns of pixels; and
each focal plane does not include pixels from another focal plane; and
an X×Y arrangement of lens stacks, the X×Y arrangement of lens stacks being disposed relative to the X×Y arrangement of focal planes so as to form an X×Y arrangement of cameras, each of which being configured to independently capture an image of a scene, wherein each lens stack has a field of view that is shifted with respect to the field-of-views of each other lens stack so that each shift includes a sub-pixel shifted view of the scene;
image data input circuitry that is capable of receiving image data from a separate sub-array module; and
image data output circuitry that is capable of aggregating image data from the sub-array module with image data received via the image data input circuitry from a separate sub-array module;
wherein the plurality of X×Y sub-array modules define at least some of the cameras in an M×N arrangement of cameras; and
a processor;
wherein the processor is configured to construct an image of the scene using image data generated by each of the sub-array modules.
6. The array camera of claim 5 , wherein X is 1 and M is 1.
7. The array camera of claim 5 , wherein the plurality of X×Y sub-array modules define an M×N arrangement of cameras.
8. The array camera of claim 5 , further comprising circuitry that aggregates the image data generated by each of the sub-array modules into a single MIPI output, and provides the MIPI output to the processor.
9. The array camera of claim 5 , further comprising a parallax disparity resolution module, wherein the parallax disparity resolution module is configured to receive image data captured by each sub-array module, implement a parallax detection and correction process on the received image data, and output the result for further processing.
10. The array camera of claim 9 , further comprising circuitry that converts the output of the parallax disparity resolution module into a single MIPI output, and provides the MIPI output to the processor.
11. The array camera of claim 10 , wherein the parallax disparity resolution module comprises a processor and memory, wherein the memory contains software to configure the processor to act as a parallax disparity resolution module.
12. The array camera of claim 10 , wherein the parallax disparity resolution module is a hardware parallax disparity resolution module.
13. The array camera of claim 5 , wherein M and N are each greater than or equal to 2.
14. The array camera of claim 5 , wherein at least two of the plurality of sub-array modules are adjoined to the interconnects of a single substrate, and are each capable of outputting image data through the interconnects.
15. The array camera of claim 14 , wherein each of the plurality of sub-array modules are adjoined to the interconnects of a single substrate, and are each capable of outputting image data through the interconnects.
16. The array camera of claim 15 , wherein the substrate is optically transparent.
17. The array camera of claim 16 , wherein the substrate is glass.
18. The array camera of claim 15 , wherein the substrate is ceramic with through-holes that clear the optical path.
19. The array camera of claim 5 , wherein at least one sub-array module is embodied within a single monolithic structure.
20. The array camera of claim 5 , wherein each sub-array module is embodied within a single respective monolithic structure.