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| 1 | WISH:wavefront imaging sensor with high resolution显示文摘Wavefront sensing is the simultaneous measurement of the amplitude and phase of an incoming optical field.Traditional wavefront sensors such as Shack-Hartmann wavefront sensor(SHWFS)suffer from a fundamental tradeoff between spatial resolution and phase estimation and consequently can only achieve a resolution of a few thousand pixels.To break this tradeoff,we present a novel computational-imaging-based technique,namely,the Wavefront Imaging Sensor with High resolution(WISH).We replace the microlens array in SHWFS with a spatial light modulator(SLM)and use a computational phase-retrieval algorithm to recover the incident wavefront.This wavefront sensor can measure highly varying optical fields at more than 10-megapixel resolution with the fine phase estimation.To the best of our knowledge,this resolution is an order of magnitude higher than the current noninterferometric wavefront sensors.To demonstrate the capability of WISH,we present three applications,which cover a wide range of spatial scales.First,we produce the diffraction-limited reconstruction for long-distance imaging by combining WISH with a large-aperture,low-quality Fresnel lens.Second,we show the recovery of high-resolution images of objects that are obscured by scattering.Third,we show that WISH can be used as a microscope without an objective lens.Our study suggests that the designing principle of WISH,which combines optical modulators and computational algorithms to sense high-resolution optical fields,enables improved capabilities in many existing applications while revealing entirely new,hitherto unexplored application areas. | Yicheng Wu Manoj Kumar Sharma Ashok Veeraraghavan | 2019 | Light(Science & Applications)2019,8,1: | 6 |
| 2 | FUSARIUM-ID v. 1.0: A DNA Sequence Database for Identifying Fusarium显示文摘 | David M. Geiser María del Mar Jiménez-Gasco Seogchan Kang Izabela Makalowska Narayanan Veeraraghavan Todd J. Ward Ning Zhang Gretchen A. Kuldau Kerry O’donnell | 2004 | European Journal of Plant Pathology (-)2004,,5: | 2 |
| 3 | Microstructure, tensile deformation and fracture behaviour of aluminium alloy 7055显示文摘 | T. S Srivatsan S Sriram D Veeraraghavan V. K Vasudevan | 1997 | Journal of Materials Science1997,,11: | 2 |
| 4 | A survey of efficient reliability computation using disjoint products approach 显示文摘 | Rai S Veeraraghavan M Trlvedi K S | 1995 | Networks1995,25,1: | 1 |
| 5 | Revenue management with strategic customers:Last-minute selling and opaque selling显示文摘 | Jerath K Netessine S Veeraraghavan S K | | 0,,03: | 1 |
| 6 | De- velopment of a Novel Electrochemical Method to Deposit High Corrosion Resistant Silicate Layers on Metal Sub- strates显示文摘 | Basker Veeraraghavan Bala Haran Dragan Slavkov | 2003 | Electrochemical and Solid-State Letters2003,6,2: | 1 |
| 7 | Synthesis and characterization of a novel non-chrome electrolytic surface treatment process to protect zinc coatings显示文摘 | Veeraraghavan B Slavkov D Prabhu S | 2003 | Surface and Coatings Technology2003,167,1: | 1 |
| 8 | Lung fibrosis: new classifications and therapy显示文摘 | Veeraraghavan S Nicholson AG Wells AU | 2001 | Curr Opin Rheumatol2001,13,6: | 1 |
| 9 | Dappled photography : mask enhanced cameras for heterodyned light fields and coded aperture refocusing显示文摘 | VEERARAGHAVAN A RASKAR R AGRAWAI A | 2007 | ACM Trans on Graphics2007,26,3: | 1 |
| 10 | Synthesis and Characterization of a Novel Non-chrome Electrolytic Surface Treatment Process to Pro- tect Zinc Coatings 显示文摘 | VEERARAGHAVAN Basker SLAVKOV Dragan PRABHU Swaminathal | 2003 | Surface and Coatings Technology2003,167,1: | 1 |
| 11 | Improvement on the Multihop Shareholder Discovery for Threshold Secret Sharing in MANETs显示文摘The collaboration of at least a threshold number of secret shareholders in a threshold secret sharing scheme is a strict requirement to ensure its intended functionality.Due to its promising characteristics,such a scheme has been proposed to solve a range of security problems in mobile ad hoc networks.However,discovering a sufficient number of secret shareholders in such dynamic and unpredictable networks is not easy.In this paper,we propose a more efficient shareholder discovery mechanism compared to our previous work.The discovery process is performed in a multihop fashion to adapt to the mobile ad hoc network environment.We introduce batch extension that gradually extends the shareholders' collaboration boundary by more than one hop at a time around the service requestor,to find at least the threshold number of the unknown shareholders.Through the batch extension,reply aggregation is applicable,hence reducing the redundancy use of reply routes,decreasing the required packet transmission,and lessening the service delay,compared to the previously proposed mechanism.Our simulation results show that,with the appropriate batch size,the latest mechanism is more efficient with an insignificant increase of control overhead. | Seleviawati Tarmizi Prakash Veeraraghavan Somnath Ghosh | 2011 | Journal of Computer Science & Technology2011,26,4: | 1 |
| 12 | CT features of lung disease in patients with systemic sclerosis:comparison with idiopathic pulmonary fibrosis and nonspecific interstitial pneumonia显示文摘 | Desai SR Veeraraghavan S Hansell DM | 2004 | Radiology2004,232,2: | 1 |
| 13 | Organizing pneumonia:perilobular pattern at thin-section CT显示文摘 | Ujita M Renzoni EA Veeraraghavan S | | 0,,: | 1 |
| 14 | In vitro antioxidant and in vivo anti-inflammatory potential of crude polysaccharide from Turbinaria ornata (Marine Brown Alga)显示文摘 | Subash Ananthi Hanumantha Rao Balaji Raghavendran Adoor Gopalan Sunil Veeraraghavan Gayathri Ganapathy Ramakrishnan Hannah R. Vasanthi | 2009 | Food and Chemical Toxicology2009,,1: | 1 |
| 15 | Interstitial lung disease in systemic sclerosis:a simple staging system显示文摘 | Goh NS Desai SR Veeraraghavan S | 2008 | Am J Respir Crit Care Med2008,177,11: | 1 |
| 16 | A novel approach for modeling of water jet peening 显示文摘 | Rajesh N Veeraraghavan S Ramesh Babu N | 2004 | Interna- tional Journal of Machine Tools and Manufacture2004,44,: | 1 |
| 17 | Synthesis and characterization of a novel non-chrome electrolyticsurface treatment process to protect zinc coatings显示文摘 | Basker Veeraraghavan Dragan Slavkov | 2003 | Surface and Coatings Technology2003,167,1: | 1 |
| 18 | An Improved algorithm for symbolic reliability analysis 显示文摘 | VEERARAGHAVAN M TRIVEDI K S | 1991 | IEEE Transactions on Reliability1991,40,3: | 1 |
| 19 | NFkappaB signaling related molecular alterations in hu- man neuroblastoma cells after fractionated irradiation显示文摘 | Madhusoodhanan R Natarajan M Veeraraghavan J | 2009 | J Radiat Res (Tokyo)2009,50,4: | 1 |
| 20 | Organizing pneu- monia: perilobular pattern at thin-section CT 显示文摘 | Ujh M Renzoni EA Veeraraghavan S | 2004 | Radiology2004,232,7: | 1 |