Smart CMOS image sensor with high SBR and subpixel resolution for light-section-based range finding

Jimin Cheon; Youngcheol Chae; Dongsoo Kim; Seunghyun Lim; Inhee Lee; Hyoung Ki Lee; Dong Jo Kim; Gunhee Han

doi:10.1109/TED.2009.2030708

Smart CMOS image sensor with high SBR and subpixel resolution for light-section-based range finding

Jimin Cheon, Youngcheol Chae, Dongsoo Kim, Seunghyun Lim, Inhee Lee, Hyoung Ki Lee, Dong Jo Kim, Gunhee Han

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Light-section (LS)-based range finders are commonly used for obstacle recognition in home service robots and autonomous vehicles. This paper proposes a smart CMOS image sensor for LS-based range finding. The proposed sensor can detect the laser light, even under very strong ambient-illumination levels by using a multiple-capture frame-correlated double sampling (F-CDS), which is realized with an inverter-based switched-capacitor F-CDS accumulator. The proposed sensor also includes on-chip winner-take-all circuits that significantly reduce the software and hardware complexity of interpolation for the subpixel resolution. The prototype chip was fabricated using a 0.35-μm CMOS process. The measurement results show that the proposed sensor can detect a laser line with an intensity that is 56.5 dB lower than that of the ambient illumination, providing a spatial resolution of ±0.16 pixels.

Original language	English
Pages (from-to)	2546-2555
Number of pages	10
Journal	IEEE Transactions on Electron Devices
Volume	56
Issue number	11
DOIs	https://doi.org/10.1109/TED.2009.2030708
Publication status	Published - 2009

Bibliographical note

Funding Information:
Manuscript received November 17, 2008; revised April 7, 2009. First published September 29, 2009; current version published October 21, 2009. This work was supported by the Samsung Advanced Institute of Technology, Yongin, Korea. The review of this paper was arranged by Editor J. Tower.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TED.2009.2030708

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title = "Smart CMOS image sensor with high SBR and subpixel resolution for light-section-based range finding",

abstract = "Light-section (LS)-based range finders are commonly used for obstacle recognition in home service robots and autonomous vehicles. This paper proposes a smart CMOS image sensor for LS-based range finding. The proposed sensor can detect the laser light, even under very strong ambient-illumination levels by using a multiple-capture frame-correlated double sampling (F-CDS), which is realized with an inverter-based switched-capacitor F-CDS accumulator. The proposed sensor also includes on-chip winner-take-all circuits that significantly reduce the software and hardware complexity of interpolation for the subpixel resolution. The prototype chip was fabricated using a 0.35-μm CMOS process. The measurement results show that the proposed sensor can detect a laser line with an intensity that is 56.5 dB lower than that of the ambient illumination, providing a spatial resolution of ±0.16 pixels.",

author = "Jimin Cheon and Youngcheol Chae and Dongsoo Kim and Seunghyun Lim and Inhee Lee and Lee, {Hyoung Ki} and Kim, {Dong Jo} and Gunhee Han",

note = "Funding Information: Manuscript received November 17, 2008; revised April 7, 2009. First published September 29, 2009; current version published October 21, 2009. This work was supported by the Samsung Advanced Institute of Technology, Yongin, Korea. The review of this paper was arranged by Editor J. Tower.",

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AU - Cheon, Jimin

AU - Chae, Youngcheol

AU - Kim, Dongsoo

AU - Lim, Seunghyun

AU - Lee, Inhee

AU - Lee, Hyoung Ki

AU - Kim, Dong Jo

AU - Han, Gunhee

N1 - Funding Information: Manuscript received November 17, 2008; revised April 7, 2009. First published September 29, 2009; current version published October 21, 2009. This work was supported by the Samsung Advanced Institute of Technology, Yongin, Korea. The review of this paper was arranged by Editor J. Tower.

PY - 2009

Y1 - 2009

N2 - Light-section (LS)-based range finders are commonly used for obstacle recognition in home service robots and autonomous vehicles. This paper proposes a smart CMOS image sensor for LS-based range finding. The proposed sensor can detect the laser light, even under very strong ambient-illumination levels by using a multiple-capture frame-correlated double sampling (F-CDS), which is realized with an inverter-based switched-capacitor F-CDS accumulator. The proposed sensor also includes on-chip winner-take-all circuits that significantly reduce the software and hardware complexity of interpolation for the subpixel resolution. The prototype chip was fabricated using a 0.35-μm CMOS process. The measurement results show that the proposed sensor can detect a laser line with an intensity that is 56.5 dB lower than that of the ambient illumination, providing a spatial resolution of ±0.16 pixels.

AB - Light-section (LS)-based range finders are commonly used for obstacle recognition in home service robots and autonomous vehicles. This paper proposes a smart CMOS image sensor for LS-based range finding. The proposed sensor can detect the laser light, even under very strong ambient-illumination levels by using a multiple-capture frame-correlated double sampling (F-CDS), which is realized with an inverter-based switched-capacitor F-CDS accumulator. The proposed sensor also includes on-chip winner-take-all circuits that significantly reduce the software and hardware complexity of interpolation for the subpixel resolution. The prototype chip was fabricated using a 0.35-μm CMOS process. The measurement results show that the proposed sensor can detect a laser line with an intensity that is 56.5 dB lower than that of the ambient illumination, providing a spatial resolution of ±0.16 pixels.

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Smart CMOS image sensor with high SBR and subpixel resolution for light-section-based range finding

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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