A QVGA 143 dB Dynamic Range Frame-Free PWM Image Sensor With Lossless Pixel-Level Video Compression and Time-Domain CDS

@article{Posch2011AQ1,
  title={A QVGA 143 dB Dynamic Range Frame-Free PWM Image Sensor With Lossless Pixel-Level Video Compression and Time-Domain CDS},
  author={Christoph Posch and Daniel Matolin and Rainer Wohlgenannt},
  journal={IEEE Journal of Solid-State Circuits},
  year={2011},
  volume={46},
  pages={259-275}
}
The biomimetic CMOS dynamic vision and image sensor described in this paper is based on a QVGA (304×240) array of fully autonomous pixels containing event-based change detection and pulse-width-modulation (PWM) imaging circuitry. [] Key Result SNR is >56 dB (9.3 bit) for >10 Lx illuminance.
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References

SHOWING 1-10 OF 48 REFERENCES
A 128 128 120 dB 15 s Latency Asynchronous Temporal Contrast Vision Sensor
TLDR
This silicon retina provides an attractive combination of characteristics for low-latency dynamic vision under uncontrolled illumination with low post-processing requirements by providing high pixel bandwidth, wide dynamic range, and precisely timed sparse digital output.
A 128$\times$ 128 120 dB 15 $\mu$s Latency Asynchronous Temporal Contrast Vision Sensor
TLDR
This silicon retina provides an attractive combination of characteristics for low-latency dynamic vision under uncontrolled illumination with low post-processing requirements by providing high pixel bandwidth, wide dynamic range, and precisely timed sparse digital output.
A 640×512 CMOS Image Sensor with Ultra Wide Dynamic Range Floating-Point Pixel-Level ADC
TLDR
This paper demonstrates, using a 640 512 CMOS image sensor with 8-b bit-serial Nyquist rate analog-to- digital converter (ADC) per 4 pixels, that pixel-level ADC enables a highly flexible and efficient implementation of multiple sampling to enhance dynamic range.
CMOS Camera With In-Pixel Temporal Change Detection and ADC
An array of 90times90 active pixel sensors (APS) with pixel-level embedded differencing and comparison is presented. The nMOS-only 6T 2C 25 mum times 25 mum pixel provides both analog readout of
An Activity-Triggered 95.3 dB DR $-$75.6 dB THD CMOS Imaging Sensor With Digital Calibration
TLDR
A new activity-triggered WDR CMOS imaging sensor with very low distortion that can achieve 95.3 dB dynamic range with low distortion after calibration and run at frame rate up to 15 Hz.
A 640/spl times/512 CMOS image sensor with ultra wide dynamic range floating-point pixel-level ADC
  • D.X.D. Yang, A. El Gamal, B. Fowler, Hui Tian
  • Physics, Computer Science
    1999 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC. First Edition (Cat. No.99CH36278)
  • 1999
TLDR
A 640/spl times/512 image sensor with Nyquist rate pixel level ADC implemented in a 0.35 /spl mu/m CMOS technology shows how a pixellevel ADC enables flexible efficient implementation of multiple sampling.
A 140dB-Dynamic-Range MOS Image Sensor with In-Pixel Multiple-Exposure Synthesis
TLDR
An image sensor capable of shooting both dark- and bright-objects in one synthesized frame without necessitating any buffer memories is developed, in which a feedback loop circuit is incorporated.
A 10,000 Frames/s 0.18 μm CMOS Digital Pixel Sensor with Pixel-Level Memory
TLDR
With an ADC per pixel, massively parallel conversion and high-speed digital readout become possible, completely eliminating analog readout bottlenecks.
A load-balancing readout method for large event-based PWM imaging arrays
TLDR
The proposed concept spreads the reset times according to the varying local illumination in the array after a global starting point, in fact realizing an asynchronous, column-parallel, light-dependent “rolling-shutter” mode for event-based pulse-width-modulation image sensors.
A digital pixel sensor array with programmable dynamic range
This paper presents a digital pixel sensor (DPS) array employing a time domain analogue-to-digital conversion (ADC) technique featuring adaptive dynamic range and programmable pixel response. The
...
1
2
3
4
5
...