CMOS Image Sensors With Multi-Bucket Pixels for Computational Photography

Wan, Gordon; Li, Xiangli; Agranov, Gennadiy; Levoy, Marc; Horowitz, Mark

doi:10.1109/jssc.2012.2185189

Cited by 42 publications

(21 citation statements)

References 14 publications

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“…This operating principle is similar to recently proposed multi-bucket sensors [Wan et al 2012], although PMDs can switch between the sites at much higher rates of dozens of MHz. This effectively allows PMDs to modulate the incident illumination with another signal during light integration, which, in combination with a modulated light source, can be used for time-of-flight depth imaging.…”

Section: Pmd Image Formation Modelsupporting

confidence: 75%

Low-budget transient imaging using photonic mixer devices

et al. 2013

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Transient imaging is an exciting a new imaging modality that can be used to understand light propagation in complex environments, and to capture and analyze scene properties such as the shape of hidden objects or the reflectance properties of surfaces. Unfortunately, research in transient imaging has so far been hindered by the high cost of the required instrumentation, as well as the fragility and difficulty to operate and calibrate devices such as femtosecond lasers and streak cameras. In this paper, we explore the use of photonic mixer devices (PMD), commonly used in inexpensive time-of-flight cameras, as alternative instrumentation for transient imaging. We obtain a sequence of differently modulated images with a PMD sensor, impose a model for local light/object interaction, and use an optimization procedure to infer transient images given the measurements and model. The resulting method produces transient images at a cost several orders of magnitude below existing methods, while simultaneously simplifying and speeding up the capture process.

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Section: Pmd Image Formation Modelsupporting

confidence: 75%

Low-budget transient imaging using photonic mixer devices

et al. 2013

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“…CMOS 센서가 가진 다양한 장점을 활용하기 위하여, TDI CMOS 센서에서 발생되는 motion blur를 최소화 하기 위한 많은 연구가 수행되고 있고, 다양한 방안들 이 제시되고 있다 (Dupont and Dierickx, 2013;Fox, 2014;Wan et al, 2012). …”

Section: Tdi Cmos 에서의 Motion Blur 개선unclassified

Minimization of Motion Blur and Dynamic MTF Analysis in the Electro-Optical TDI CMOS Camera on a Satellite

Heo

2015

Korean Journal of Remote Sensing

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: TDI CCD sensors are being used for most of the electro-optical camera mounted on the low earth orbit satellite to meet high performance requirements such as SNR and MTF. However, the CMOS sensors which have a lot of implementation advantages over the CCD, are being upgraded to have the TDI function. A few methods for improving the issue of motion blur which is apparent in the CMOS sensor than the CCD sensor, are being introduced. Each pixel can be divided into a few sub-pixels to be read more than once as is the same case with three or four phased CCDs. The fill factor can be reduced intentionally or even a kind of mask can also be implemented at the edge of pixels to reduce the blur. The motion blur can also be reduced in the TDI CMOS sensor by reducing the integration time from the full line scan time. Because the integration time can be controlled easily by the versatile control electronics, one of two performance parameters, MTF and SNR, can be concentrated dynamically depending on the aim of target imaging. MATLAB simulation has been performed and the results are presented in this paper. The goal of the simulation is to compare dynamic MTFs affected by the different methods for reducing the motion blur in the TDI CMOS sensor.

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“…An image sensor with multi-bucket pixels is proposed in [7] to enable time multiplexed exposure that improves the image dynamic range and detects structured light illumination. A backilluminated stacked CMOS sensor is proposed in [8] that uses spatially varying pixel exposures to support HDR imaging.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Processor for Energy-Efficient Computational Photography

Rithe

Raina

Ickes

et al. 2013

IEEE J. Solid-State Circuits

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Abstract-This paper presents an on-chip implementation of a scalable reconfigurable bilateral filtering processor for computational photography applications such as HDR imaging, low light enhancement and glare reduction. Careful pipelining and scheduling has minimized the local storage requirement to tens of kB. The 40 nm CMOS test chip operates from 98 MHz at 0.9 V to 25 MHz at 0.5 V. The test chip processes 13 megapixels/s while consuming 17.8 mW at 98 MHz and 0.9 V, achieving significant energy reduction compared to software implementations on recent mobile processors.

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CMOS Image Sensors With Multi-Bucket Pixels for Computational Photography

Cited by 42 publications

References 14 publications

Low-budget transient imaging using photonic mixer devices

Low-budget transient imaging using photonic mixer devices

Minimization of Motion Blur and Dynamic MTF Analysis in the Electro-Optical TDI CMOS Camera on a Satellite

Reconfigurable Processor for Energy-Efficient Computational Photography

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