A High Speed CMOS Image Sensor with a Novel  Digital Correlated Double Sampling and a Differential Difference Amplifier

Kim, Daehyeok; Bae, Jae‐Young; Song, Minkyu

doi:10.3390/s150305081

Cited by 6 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this paper, the mechanism and influence of non-ideal factors of a spike-based image sensor are discussed. As the pixel continuously perceives the scene information in the time domain, it is impossible to eliminate the influence of photo response non-uniformity (PRNU) by the time domain correlation double sampling method [14,15]. However, based on characteristics of PRNU, a coefficient matrix obtained by the measurement is used to suppress its effect.…”

Section: Introductionmentioning

confidence: 99%

The Analysis and Suppressing of Non-Uniformity in a High-Speed Spike-Based Image Sensor

Gao

Wang

Nie

et al. 2018

Sensors

View full text Add to dashboard Cite

In this paper, the non-ideal factors, which include spatial noise and temporal noise, are analyzed and suppressed in the high-speed spike-based image sensor, which combines the high-speed scanning sequential format with the method that uses the interspike time interval to indicate the scene information. In this imager, spatial noise contains device mismatch, which results in photo response non-uniformity (PRNU) and the non-uniformity of dark current. By multiplying the measured coefficient matrix the photo response non-uniformity is suppressed, and the non-uniformity of dark current is suppressed by correcting the interspike time interval based on the time interval of dark current. The temporal noise is composed of the shot noise and thermal noise. This kind of noise can be eliminated when using the spike frequency to restore the image. The experimental results show that, based on the spike frequency method, the standard deviation of the image decreases from 18.4792 to 0.5683 in the uniform bright light by using the calibration algorithm. While in the relatively uniform dark condition, the standard deviation decreases from 1.5812 to 0.4516. Based on interspike time interval method, because of time mismatch and temporal noise, the standard deviation of the image changes from 27.4252 to 27.4977 in the uniform bright light by using the calibration algorithm. While in the uniform dark condition, the standard deviation decreases from 2.361 to 0.3678.

show abstract

Section: Introductionmentioning

confidence: 99%

The Analysis and Suppressing of Non-Uniformity in a High-Speed Spike-Based Image Sensor

Gao

Wang

Nie

et al. 2018

Sensors

View full text Add to dashboard Cite

show abstract

“…In general, the conventional high-speed imaging methods for solid-state image sensors can be classified into two categories. One is the use of parallel readout imaging scheme [ 6 , 7 , 8 ]. Tochigi et al had demonstrated a global-shutter high-speed CMOS image sensor with a readout speed of 1-Tpixel/s in burst video and 780-Mpixel/s continuous [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Per-Pixel Coded Exposure for High-Speed and High-Resolution Imaging Using a Digital Micromirror Device Camera

Feng

Zhang

et al. 2016

Sensors

View full text Add to dashboard Cite

High-speed photography is an important tool for studying rapid physical phenomena. However, low-frame-rate CCD (charge coupled device) or CMOS (complementary metal oxide semiconductor) camera cannot effectively capture the rapid phenomena with high-speed and high-resolution. In this paper, we incorporate the hardware restrictions of existing image sensors, design the sampling functions, and implement a hardware prototype with a digital micromirror device (DMD) camera in which spatial and temporal information can be flexibly modulated. Combined with the optical model of DMD camera, we theoretically analyze the per-pixel coded exposure and propose a three-element median quicksort method to increase the temporal resolution of the imaging system. Theoretically, this approach can rapidly increase the temporal resolution several, or even hundreds, of times without increasing bandwidth requirements of the camera. We demonstrate the effectiveness of our method via extensive examples and achieve 100 fps (frames per second) gain in temporal resolution by using a 25 fps camera.

show abstract

Two-Step Single-Slope ADC Utilizing Differential Ramps for CMOS Image Sensors

Fang,

Nie,

Zhang

et al. 2024

Circuits Syst Signal Process

View full text Add to dashboard Cite

A High Speed CMOS Image Sensor with a Novel Digital Correlated Double Sampling and a Differential Difference Amplifier

Cited by 6 publications

References 17 publications

The Analysis and Suppressing of Non-Uniformity in a High-Speed Spike-Based Image Sensor

The Analysis and Suppressing of Non-Uniformity in a High-Speed Spike-Based Image Sensor

Per-Pixel Coded Exposure for High-Speed and High-Resolution Imaging Using a Digital Micromirror Device Camera

Two-Step Single-Slope ADC Utilizing Differential Ramps for CMOS Image Sensors

Contact Info

Product

Resources

About