Imager array interfaces
Architectures for imager arrays configured for use in array cameras in accordance with embodiments of the invention are described. One embodiment of the invention includes a plurality of focal planes, where each focal plane comprises a two dimensional arrangement of pixels having at least two pixels in each dimension and each focal plane is contained within a region of the imager array that does not contain pixels from another focal plane, control circuitry configured to control the capture of image information by the pixels within the focal planes, where the control circuitry is configured so that the capture of image information by the pixels in at least two of the focal planes is separately controllable, sampling circuitry configured to convert pixel outputs into digital pixel data, and output interface circuitry configured to transmit pixel data via an output interface.
1. A method of obtaining image data, comprising:
separately capturing image data using an imager array comprising a plurality of focal planes functioning as a plurality of cameras in a single semiconductor substrate, where each camera comprises a two dimensional arrangement of pixels having at least two pixels in each dimension and each camera is contained within a region of the imager array that does not contain pixels from another camera, and wherein separately capturing the image data is performed by separately controlling at least two of the cameras having different imaging characteristics;
selecting a set of active cameras from said plurality of cameras, the active cameras having sensors which are active and that are providing the image data;
multiplexing the image data into at least one line of image data from the selected set of active cameras;
packetizing, by a master control logic, the at least one line of image data with additional data into a packet of data, wherein the additional information comprises at least codes inserted between pixel data for identifying a focal plane, integration time of each focal plane and information for demultiplexing the image data; and
transmitting the packet of data via output ports of an output interface in the imager array.
2. The method of claim 1 , where in multiplexing the image data is performed onto output ports of an output interface including fewer than M×N output ports, wherein the imager array includes M×N cameras.
3. The method of claim 1 , further comprising:
buffering portions of the captured image data within memory in the imager array until a time-slot is available on an output port of the output interface to transmit the image data.
4. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras, at least one of which is configured to capture image data at a predetermined wavelength of light.
5. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras, at least one of which is configured to capture image data at visible light wavelengths.
6. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras, at least one of which is configured to capture image data at near-IR wavelengths.
7. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras, at least one of which is configured to capture image data at extended-color wavelengths.
8. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras, at least one of which is configured to capture image data at a predetermined intensity of light.
9. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras, at least one of which is configured to capture image data using a predetermined exposure time.
10. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras configured to capture image data starting at different times.
11. The method of claim 1 , wherein separately capturing the image data is performed by separately controlling at least two of the cameras configured to capture image data ending at different times.