Systems and methods for controlling aliasing in images captured by an array camera for use in super resolution processing using pixel apertures
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04N-009/097
H04N-005/232
H04N-005/225
H04N-013/02
H04N-013/00
출원번호
US-0048369
(2016-02-19)
등록번호
US-9794476
(2017-10-17)
발명자
/ 주소
Nayar, Shree
Venkataraman, Kartik
Pain, Bedabrata
Lelescu, Dan
출원인 / 주소
FotoNation Cayman Limited
대리인 / 주소
KPPB LLP
인용정보
피인용 횟수 :
15인용 특허 :
243
초록▼
Imager arrays, array camera modules, and array cameras in accordance with embodiments of the invention utilize pixel apertures to control the amount of aliasing present in captured images of a scene. One embodiment includes a plurality of focal planes, control circuitry configured to control the cap
Imager arrays, array camera modules, and array cameras in accordance with embodiments of the invention utilize pixel apertures to control the amount of aliasing present in captured images of a scene. One embodiment includes a plurality of focal planes, control circuitry configured to control the capture of image information by the pixels within the focal planes, and sampling circuitry configured to convert pixel outputs into digital pixel data. In addition, the pixels in the plurality of focal planes include a pixel stack including a microlens and an active area, where light incident on the surface of the microlens is focused onto the active area by the microlens and the active area samples the incident light to capture image information, and the pixel stack defines a pixel area and includes a pixel aperture, where the size of the pixel apertures is smaller than the pixel area.
대표청구항▼
1. An imager array, comprising: 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 pla
1. An imager array, comprising: 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; andsampling circuitry configured to convert pixel outputs into digital pixel data;wherein each of the pixels in the plurality of focal planes comprises a pixel stack including a microlens and an active area, where light incident on the surface of the microlens is focused onto the active area by the microlens and the active area samples the incident light to capture image information;wherein the pixel stack of each pixel defines a pixel area and includes a pixel aperture, wherein the light incident on the pixel stack passes through the pixel aperture and is incident on the pixel area, where the size of the pixel aperture is smaller than the pixel area;wherein aliasing present in the images captured by each focal plane is different so that high frequencies folded back into the lower frequencies of the captured images can be recovered using super resolution processing, wherein the super resolution processing processes the images captured by each focal plane to obtain a synthesized high resolution (HR) image with an increased overall resolution. 2. The imager array of claim 1, wherein the pixel aperture of each pixel stack is formed by a microlens that is smaller than the pixel area of the pixel. 3. The imager array of claim 2, wherein gaps exist between adjacent microlenses in the pixel stacks of adjacent pixels in a focal plane. 4. The imager array of claim 3, wherein light is prevented from entering the pixel stacks through the gaps between the microlenses by a light blocking material. 5. The imager array of claim 4, wherein photoresist is located in the gaps between the microlenses. 6. The imager array of claim 2, wherein the amount of aliasing in an image captured by a focal plane is greater than the amount of aliasing that would be present were the microlens to occupy the entire pixel area defined by the pixel stack. 7. The imager array of claim 2, wherein the pixel stacks further comprise an oxide layer and the microlens sits atop the oxide layer. 8. The imager array of claim 7, wherein the pixel stack includes a color filter. 9. The imager array of claim 8, wherein the color filters in the pixel stacks of the two dimensional arrangement of pixels within a focal plane are the same. 10. The imager array of claim 8, wherein the color filters in the pixel stacks of the two dimensional arrangement of pixels within at least one focal plane form a Bayer filter pattern. 11. The imager array of claim 7, wherein the pixel stack does not include a color filter. 12. The imager array of claim 7, wherein the pixel stack includes a nitride passivation layer and a bottom oxide layer that provides support and isolation for metal interconnects. 13. The imager array of claim 1, wherein the pixel aperture is formed using at least one light blocking material. 14. An imager array, comprising: 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; andsampling circuitry configured to convert pixel outputs into digital pixel data;wherein each of the pixels in the plurality of focal planes comprises a pixel stack including a microlens and an active area, where light incident on the surface of the microlens is focused onto the active area by the microlens and the active area samples the incident light to capture image information;wherein the pixel stack of each pixel defines a pixel area and the microlens forms a pixel aperture, wherein the light incident on the pixel stack passes through the pixel aperture and is incident on the pixel area, where the size of the pixel aperture is smaller than the pixel area so that the sampling frequency of the pixels introduces aliasing into the images captured by each focal plane;wherein gaps exist between adjacent microlenses in the pixel stacks of adjacent pixels in a focal plane;wherein the pixel stack further comprises light blocking material located to prevent light from entering the pixel stacks through the gaps between the microlenses;wherein the amount of aliasing in images captured by a focal plane is greater than the amount of aliasing that would be present were the microlens in each pixel stack to occupy the entire pixel area defined by the pixel stack; andwherein the aliasing present in the images captured by each focal plane is different so that high frequencies folded back into the lower frequencies of the captured images can be recovered using super resolution processing, wherein the super resolution processing processes the images captured by each focal plane to obtain a synthesized high resolution (HR) image with an increased overall resolution. 15. An array camera module, comprising: an imager array configured to capture light field image data, comprising: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; andsampling circuitry configured to convert pixel outputs into digital pixel data;wherein each of the pixels in the plurality of focal planes comprise a pixel stack including a microlens and an active area, where light incident on the surface of the microlens is focused onto the active area by the microlens and the active area samples the incident light to capture image information;wherein the pixel stack of each pixel defines a pixel area and includes a pixel aperture, wherein the light incident on the pixel stack passes through the pixel aperture and is incident on the pixel area, where the size of the pixel apertures is smaller than the pixel area so that the sampling frequency of the pixels introduces aliasing into the images captured by each focal plane; andan optic array of lens stacks,wherein the aliasing present in the images captured by each focal plane is different so that high frequencies folded back into the lower frequencies of the captured images can be recovered using super resolution processing, wherein the super resolution processing processes the images captured by each focal plane to obtain a synthesized high resolution (HR) image with an increased overall resolution. 16. The array camera module of claim 15, wherein the pixel aperture of each pixel stack is formed by a microlens that is smaller than the pixel area of the pixel. 17. The array camera module of claim 16, wherein gaps exist between adjacent microlenses in the pixel stacks of adjacent pixels in a focal plane. 18. The array camera module of claim 17, wherein light is prevented from entering the pixel stacks through the gaps between the microlenses by a light blocking material. 19. The array camera module of claim 18, wherein photoresist is located in the gaps between the microlenses. 20. The array camera module of claim 16, wherein the amount of aliasing in images captured by a focal plane is greater than the amount of aliasing that would be present were the microlens in each pixel stack to occupy the entire pixel area defined by the pixel stack.
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Hines, Stephen P, 3-D motion-parallax portable display software application.
Wilburn, Bennett; Joshi, Neel; Levoy, Marc C.; Horowitz, Mark, Apparatus and method for capturing a scene using staggered triggering of dense camera arrays.
Iwase Toshihiro (Nara JPX) Kanekura Hiroshi (Yamatokouriyama JPX), Apparatus for and method of converting a sampling frequency according to a data driven type processing.
Duparre, Jacques; Lelescu, Dan; Venkataraman, Kartik, Array cameras incorporating monolithic array camera modules with high MTF lens stacks for capture of images used in super-resolution processing.
Duparre, Jacques; Lelescu, Dan; Venkataraman, Kartik, Array cameras incorporating optics with modulation transfer functions greater than sensor Nyquist frequency for capture of images used in super-resolution processing.
Boisvert, David Michael; McMahon, Andrew Kenneth John, CCD output processing stage that amplifies signals from colored pixels based on the conversion efficiency of the colored pixels.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H.; Duparre, Jacques; Hu, Shane Ching-Feng, Capturing and processing of images including occlusions captured by arrays of luma and chroma cameras.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H.; Duparre, Jacques; Hu, Shane Ching-Feng, Capturing and processing of images including occlusions captured by camera arrays.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H.; Duparre, Jacques; Hu, Shane Ching-Feng, Capturing and processing of images including occlusions focused on an image sensor by a lens stack array.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H., Capturing and processing of images using monolithic camera array with heterogeneous imagers.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H.; Duparre, Jacques; Hu, Shane Ching-Feng, Capturing and processing of images using monolithic camera array with heterogeneous imagers.
Yamashita,Syugo; Murata,Haruhiko; Iinuma,Toshiya; Nakashima,Mitsuo; Mori,Takayuki, Device and method for converting two-dimensional video to three-dimensional video.
Pertsel, Shimon; Meitav, Ohad; Pozniansky, Eli; Galil, Erez, Digital camera with selectively increased dynamic range by control of parameters during image acquisition.
Ward, Gregory John; Seetzen, Helge; Heidrich, Wolfgang, Electronic camera having multiple sensors for capturing high dynamic range images and related methods.
Hornback,Bert; Harwood,Doug; Boyd,W. Eric; Carlson,Randy, Imaging device with multiple fields of view incorporating memory-based temperature compensation of an uncooled focal plane array.
Abell Gurdon R. (West Woodstock CT) Cook Francis J. (Topsfield MA) Howes Peter D. (Sudbury MA), Method and apparatus for arraying image sensor modules.
Kim, Yong-tae; Park, Ha-joong; Lee, Gun-ill; Min, Houng-sog; Hong, Sung-bin; Choi, Kwang-cheol, Method and apparatus for providing a multi-view still image service, and method and apparatus for receiving a multi-view still image service.
Sawhney,Harpreet Singh; Tao,Hai; Kumar,Rakesh; Hanna,Keith, Method and apparatus for synthesizing new video and/or still imagery from a collection of real video and/or still imagery.
Burt Peter J. (Mercer County NJ) van der Wal Gooitzen S. (Mercer NJ) Kolczynski Raymond J. (Mercer NJ) Hingorani Rajesh (Mercer NJ), Method for fusing images and apparatus therefor.
Burt Peter J. (Princeton NJ) van der Wal Gooitzen S. (Hopewell Borough ; Mercer County NJ) Kolczynski Raymond J. (Hamilton Township ; Mercer County NJ) Hingorani Rajesh (West Windsor Township ; Merce, Method for fusing images and apparatus therefor.
Han, Hee-chul; Choi, Yang-lim; Cho, Seung-ki, Method of generating image data by an image device including a plurality of lenses and apparatus for generating image data.
Alexander David H. (Santa Monica CA) Hershman George H. (Carlsbad CA) Jack Michael D. (Carlsbad CA) Koda N. John (Vista CA) Lloyd Randahl B. (San Marcos CA), Monolithic imager for near-IR.
Doering, Hans-Joachim; Heinitz, Joachim, Multi-beam modulator for a particle beam and use of the multi-beam modulator for the maskless structuring of a substrate.
Hornbaker ; III Cecil V. (New Carrolton MD) Driggers Thomas C. (Falls Church VA) Bindon Edward W. (Fairfax VA), Scanning apparatus using multiple CCD arrays and related method.
Neal Margulis ; Chad Fogg, System and method for using temporal gamma and reverse super-resolution to process images for use in digital display systems.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, System and methods for measuring depth using an array camera employing a bayer filter.
Lelescu, Dan; Molina, Gabriel; Venkataraman, Kartik, Systems and methods for dynamic refocusing of high resolution images generated using images captured by a plurality of imagers.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, Systems and methods for estimating depth and visibility from a reference viewpoint for pixels in a set of images captured from different viewpoints.
Venkataraman, Kartik; Lelescu, Dan; Molina, Gabriel, Systems and methods for generating compressed light field representation data using captured light fields, array geometry, and parallax information.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, Systems and methods for generating depth maps and corresponding confidence maps indicating depth estimation reliability.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H.; Duparre, Jacques; Hu, Shane Ching-Feng, Systems and methods for generating depth maps using a set of images containing a baseline image.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H., Systems and methods for generating depth maps using light focused on an image sensor by a lens element array.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, Systems and methods for measuring depth in the presence of occlusions using a subset of images.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, Systems and methods for measuring depth using an array of independently controllable cameras.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H., Systems and methods for measuring depth using images captured by a camera array including cameras surrounding a central camera.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, Systems and methods for parallax detection and correction in images captured using array cameras that contain occlusions using subsets of images to perform depth estimation.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H., Systems and methods for parallax measurement using camera arrays incorporating 3 x 3 camera configurations.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, Systems and methods for performing depth estimation using image data from multiple spectral channels.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H., Systems and methods for performing post capture refocus using images captured by camera arrays.
Lelescu, Dan; Duong, Thang, Systems and methods for synthesizing high resolution images using image deconvolution based on motion and depth information.
Lelescu, Dan; Molina, Gabriel; Venkataraman, Kartik, Systems and methods for synthesizing high resolution images using images captured by an array of independently controllable imagers.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H.; Duparre, Jacques; Hu, Shane Ching-Feng, Systems and methods for synthesizing higher resolution images using a set of images containing a baseline image.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H., Systems and methods for synthesizing higher resolution images using images captured by camera arrays.
Venkataraman, Kartik; Nisenzon, Semyon; Chatterjee, Priyam; Molina, Gabriel, Systems and methods for synthesizing images from image data captured by an array camera using restricted depth of field depth maps in which depth estimation precision varies.
Ludwig, Lester F., Vignetted optoelectronic array for use in synthetic image formation via signal processing, lensless cameras, and integrated camera-displays.
Rieger Albert,DEX ; Barclay David ; Chapman Steven ; Kellner Heinz-Andreas,DEX ; Reibl Michael,DEX ; Rydelek James G. ; Schweizer Andreas,DEX, Watertight body for accommodating a photographic camera.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H.; Duparre, Jacques; Hu, Shane Ching-Feng, Capturing and processing of images including occlusions focused on an image sensor by a lens stack array.
Srikanth, Manohar; Ramamoorthi, Ravi; Venkataraman, Kartik; Chatterjee, Priyam, System and methods for depth regularization and semiautomatic interactive matting using RGB-D images.
Ciurea, Florian; Venkataraman, Kartik; Molina, Gabriel; Lelescu, Dan, Systems and methods for estimating depth and visibility from a reference viewpoint for pixels in a set of images captured from different viewpoints.
Venkataraman, Kartik; Jabbi, Amandeep S.; Mullis, Robert H., Systems and methods for generating depth maps using a camera arrays incorporating monochrome and color cameras.
Duparre, Jacques; McMahon, Andrew Kenneth John; Lelescu, Dan, Systems and methods for manufacturing camera modules using active alignment of lens stack arrays and sensors.
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