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Scene-adaptive Coded Apertures Imaging [article]

Xuehui Wang, Jinli Suo, Jingyi Yu, Yongdong Zhang, Qionghai Dai
2015 arXiv   pre-print
This paper presents a simple but effective scene-adaptive coded aperture solution to bridge this gap.  ...  Coded aperture imaging systems have recently shown great success in recovering scene depth and extending the depth-of-field.  ...  This paper presents a new scene-adaptive coded aperture solution for dynamic imaging.  ... 
arXiv:1506.05942v2 fatcat:nbytk2zbffc4pfbo5dsvom6z5m

Adaptive Coded Aperture Photography [chapter]

Oliver Bimber, Haroon Qureshi, Anselm Grundhöfer, Max Grosse, Daniel Danch
2011 Lecture Notes in Computer Science  
We show how the intrinsically performed JPEG compression of many digital still cameras leaves margin for deriving and applying image-adapted coded apertures that support retention of the most important  ...  These coded apertures, together with subsequently applied image processing, enable a higher light throughput than corresponding circular apertures, while preserving adjusted focus, depth of field, and  ...  Our experiments showed, that adaptive coded apertures are most efficient for large depth-of-field photographs of general 3D scenes because JPEG compression is efficient for the high frequency content imaged  ... 
doi:10.1007/978-3-642-24028-7_6 fatcat:ffvxs2gz6fgb5pbkjn5qazukim

Motion-adaptive compressive coded apertures

Zachary T. Harmany, Albert Oh, Roummel Marcia, Rebecca Willett, Jean J. Dolne, Thomas J. Karr, Victor L. Gamiz, Stanley Rogers, David P. Casasent
2011 Unconventional Imaging, Wavefront Sensing, and Adaptive Coded Aperture Imaging and Non-Imaging Sensor Systems  
This paper describes an adaptive compressive coded aperture imaging system for video based on motion-compensated video sparsity models.  ...  coded aperture to yield higher reconstruction fidelity in the vicinity of this salient motion.  ...  COMPRESSIVE CODED APERTURES The proposed imaging architecture builds upon previous work on compressive coded aperture imaging.  ... 
doi:10.1117/12.892726 fatcat:jf37difgyzdhbjawlkwcweb6re

Towards Motion Aware Light Field Video for Dynamic Scenes

Salil Tambe, Ashok Veeraraghavan, Amit Agrawal
2013 2013 IEEE International Conference on Computer Vision  
is (a) to design efficient multiplexing matrices that allow resolution tradeoffs, (b) use dictionary learning and sparse representations for robust reconstruction, and (c) perform local motion-aware adaptive  ...  Thus, capturing high spatial resolution LF video for dynamic scenes remains an open and challenging problem.  ...  Coded Aperture: Coded aperture imaging has been widely used in astronomy [28] to overcome the limitations imposed by a pinhole camera.  ... 
doi:10.1109/iccv.2013.129 dblp:conf/iccv/TambeVA13 fatcat:ucib636dbnej5ko452pjgvm7vu

Adaptive Multisensor Acquisition via Spatial Contextual Information for Compressive Spectral Image Classification

Nelson Diaz, Juan Marcos Ramirez, Esteban Vera, Henry Arguello
2021 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
In particular, we adaptively design coded aperture patterns for a dual-arm CSI acquisition architecture, where the first system obtains compressive multispectral projections and the second arm registers  ...  Spectral image classification uses the huge amount of information provided by spectral images to identify objects in the scene of interest.  ...  adaptive coded apertures (c), hyperspectral compressive measurements using adaptive coded apertures (d).  ... 
doi:10.1109/jstars.2021.3111508 fatcat:mio7lcnknrep5lf6meamhr4glm

Approximate Message Passing in Coded Aperture Snapshot Spectral Imaging [article]

Jin Tan, Yanting Ma, Hoover Rueda, Dror Baron, Gonzalo Arce
2015 arXiv   pre-print
We consider a compressive hyperspectral imaging reconstruction problem, where three-dimensional spatio-spectral information about a scene is sensed by a coded aperture snapshot spectral imager (CASSI).  ...  The approximate message passing (AMP) framework is utilized to reconstruct hyperspectral images from CASSI measurements, and an adaptive Wiener filter is employed as a three-dimensional image denoiser  ...  CODED APERTURE SNAPSHOT SPECTRAL IMAGER The coded aperture snapshot spectral imager (CASSI) [16] is a compressive spectral imaging system that collects far fewer measurements than traditional spectrometers  ... 
arXiv:1509.02427v1 fatcat:o6y5funuc5f67nkfdbi6qxk57m

Coded Aperture Flow [chapter]

Anita Sellent, Paolo Favaro
2014 Lecture Notes in Computer Science  
We compare several approaches to compute accurate correspondences for coded aperture images showing objects with arbitrary 3D motion.  ...  The resulting defocus blur is a valuable cue for estimating the depth structure of a scene. Using coded apertures, depth can be estimated from a single frame.  ...  Under the assumption of fronto-parallel scene patches we also consider a second approach by adapting the idea of Refs. [14, 17] to coded aperture images.  ... 
doi:10.1007/978-3-319-11752-2_48 fatcat:szni2adkk5giniz3x5ub5x2r44

High-dynamic range compressive spectral imaging by grayscale coded aperture adaptive filtering

Nelson Eduardo Diaz, Hoover Fabian Rueda Chacon, Henry Arguello Fuentes
2015 Ingeniería e Investigación  
<p class="p1">The coded aperture snapshot spectral imaging system (CASSI) is an imaging architecture which senses the three dimensional informa-tion of a scene with two dimensional (2D) focal plane array  ...  In CASSI the quality of the reconstructed images depends on the design of these coded apertures and the FPA dynamic range.  ...  Introduction The coded aperture snapshot spectral imaging system (CASSI) is an imaging architecture which senses the three dimensional information of a scene with a single two dimensional (2D) coded random  ... 
doi:10.15446/ing.investig.v35n3.49868 fatcat:pdlcnvgrrrchjgdkcj3xq5fym4

Simultaneous acquisition of multiple images with higher dynamic range

Rene M A Teixeira, Kiyoharu Aizawa
2014 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
By using coded apertures, the framework is able to multiplex images of a scene and simultaneously acquire them.  ...  This framework is not limited to the acquisition of images with varying exposure values. It is also adaptable to different types of filters, e.g.: color filters.  ...  This camera is composed of a special type of aperture (coded aperture), and an ordinary image sensor. Apart from the coded aperture, no other special hardware is required.  ... 
doi:10.1109/icassp.2014.6853818 dblp:conf/icassp/TeixeiraA14 fatcat:ok23gp33lffwbabfrcdl5g5zdi

Approximate message passing in coded aperture snapshot spectral imaging

Jin Tan, Yanting Ma, Hoover Rueda, Dror Baron, Gonzalo R. Arce
2015 2015 IEEE Global Conference on Signal and Information Processing (GlobalSIP)  
We consider a compressive hyperspectral imaging reconstruction problem, where three-dimensional spatio-spectral information about a scene is sensed by a coded aperture snapshot spectral imager (CASSI).  ...  The approximate message passing (AMP) framework is utilized to reconstruct hyperspectral images from CASSI measurements, and an adaptive Wiener filter is employed as a three-dimensional image denoiser  ...  CODED APERTURE SNAPSHOT SPECTRAL IMAGER The coded aperture snapshot spectral imager (CASSI) [16] is a compressive spectral imaging system that collects far fewer measurements than traditional spectrometers  ... 
doi:10.1109/globalsip.2015.7418268 dblp:conf/globalsip/TanMRBA15 fatcat:uc5uckykvbelrjrck6glauc2om

Half-sweep imaging for depth from defocus

Shuhei Matsui, Hajime Nagahara, Rin-ichiro Taniguchi
2014 Image and Vision Computing  
We confirmed the advantage of the imaging in comparison with conventional DFD and coded aperture in experiments.  ...  Depth from defocus (DFD) is a technique to recover the scene depth from defocusing in images.  ...  Coded aperture pair d. Half-sweep imaging Error map of deblurred image scene as shown in Figure 4-a.  ... 
doi:10.1016/j.imavis.2014.09.001 fatcat:v3yp5fjeqjbbpdvdhe4ylg4uqa

Half-Sweep Imaging for Depth from Defocus [chapter]

Shuhei Matsui, Hajime Nagahara, Rin-ichiro Taniguchi
2011 Lecture Notes in Computer Science  
We confirmed the advantage of the imaging in comparison with conventional DFD and coded aperture in experiments.  ...  Depth from defocus (DFD) is a technique to recover the scene depth from defocusing in images.  ...  Coded aperture pair d. Half-sweep imaging Error map of deblurred image scene as shown in Figure 4-a.  ... 
doi:10.1007/978-3-642-25367-6_30 fatcat:skkmvmv625hedbh4hflp7bhl5i

15-6 符号化開口を用いた多重化によるHDR撮像(第15部門情報センシング1)
15-6 Multiplexing Framework for HDR Acquisition Using Coded Aperture

Rene Teixeira, Kiyoharu Aizawa
2013 Proceedings of the ITE Annual Convention  
In this paper we present a theoretical framework for a computational camera, based on coded apertures, that is able to multiplex images of a scene and simultaneously acquire them.  ...  The framework is in no way limited to the acquisition of images with varying exposure values. It is adaptable to different types of filters, like color filters.  ...  In a similar way to the traditional coded aperture, the imaging model can be described by: h s = x M ⊗ (1) Where x M is the multiplexed image captured by the sensor. s is the scene and h is the mask.  ... 
doi:10.11485/iteac.2013.0_15-6-1 fatcat:v3iwm7pcincjxceh7itvm2t64a

Single disperser design for compressive, single-snapshot spectral imaging

Ashwin A. Wagadarikar, Renu John, Rebecca Willett, David J. Brady, David P. Casasent, Timothy Clark
2007 Adaptive Coded Aperture Imaging and Non-Imaging Sensors  
In this paper, compressive, single-snapshot spectral imaging is accomplished via a novel static design consisting of a coded input aperture, a single dispersive element and a detector.  ...  aperture.  ...  A standard imaging lens is used to form an image of a remote scene in the plane of the coded aperture.  ... 
doi:10.1117/12.734058 fatcat:zldi7lx4h5d4dgeuc7ob6lmlpi

Side information in coded aperture compressive spectral imaging

Laura Galvis, Henry Arguello, Daniel Lau, Gonzalo R. Arce, Michael R. Douglass, Benjamin L. Lee
2017 Emerging Digital Micromirror Device Based Systems and Applications IX  
This paper presents the coded aperture design in a compressive spectral imager with side information in the form of RGB true color images of the scene.  ...  The coded aperture design is based on the RGB scene and thus the coded aperture structure exploits key features such as scene edges.  ...  used to configure the DMD and can adapt itself to different scene content during acquisition.  ... 
doi:10.1117/12.2252167 fatcat:lcrkyvzzqrbk3ldztl54m32cpe
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