A Lowpower Energyharvesting Logarithmic Cmos Image Sensor With Reconfigurable Resolution Using Twolevel Quantization Scheme

• doi: 10.1109/TCSII.2010.2104010
• title: A Low-Power Energy-Harvesting Logarithmic CMOS Image Sensor With Reconfigurable Resolution Using Two-Level Quantization Scheme
• publisher: IEEE
• isbn:
• issn: 1558-3791
• rank: 808
• access_type: LOCKED
• content_type: Journals
• abstract: In this brief, a CMOS image sensor that exploits the possibility of reconfiguring pixel photodiodes for energy harvesting for wireless image sensor applications is proposed. Based on the logarithmic sensor architecture, each pixel photodiode of the proposed sensor array can be configured into either photosensing or energy-harvesting element to accomplish image-capturing or energy-harvesting purpose, respectively. An addressing scheme for reduced resolution readout and improved energy-harvesting efficiency, and a two-level quantization scheme for reduced readout dynamic power consumption are also proposed.
• article_number: 5713245
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5713245
• html_url: https://ieeexplore.ieee.org/document/5713245/
• abstract_url: https://ieeexplore.ieee.org/document/5713245/
• publication_title: IEEE Transactions on Circuits and Systems II: Express Briefs
• conference_location:
• conference_dates:
• publication_number: 8920
• is_number: 5719224
• publication_year: 2011
• publication_date: Feb. 2011
• start_page: 80
• end_page: 84
• citing_paper_count: 37
• citing_patent_count: 4
• download_count: 1811
• insert_date: 20110214
• index_terms:
  • ieee_terms:
    • Pixel
    • Image sensors
    • Image resolution
    • Quantization
    • Arrays
    • Photodiodes
  • author_terms:
    • Energy harvesting
    • low-power CMOS image sensor
    • reconfigurable resolution
    • two-level quantization
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Quantization Scheme
    • Quantification Strategy
    • Low-power Sensors
    • Power Consumption
    • Photodiode
    • Wireless Sensor
    • Sensor Array
    • Wireless Applications
    • Radio Applications
    • Dynamic Power Consumption
    • Quantum
    • Building Blocks
    • Negation
    • Image Quality
    • Dynamic Range
    • Low Voltage
    • Signal Values
    • Photocurrent
    • Sensor Networks
    • Peak Signal-to-noise Ratio
    • PSNR
    • Global Circuits
    • Fair Weather Conditions
    • Wireless Sensor Networks
    • CMOS Process
    • Conventional Scheme
    • Transistor Size
    • Transistor Count
    • Radio Frequency Identification
    • RFID
    • Pixel Array
    • Counter Value
    • Uniform Source
• authors:
  • Author Name: M. K. Law
    Affiliation: Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China
    Author URL: https://ieeexplore.ieee.org/author/37072476800
    ID: 37072476800
    Order: 1
    Author Affiliations:
    • Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China
  • Author Name: A. Bermak
    Affiliation: Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China
    Author URL: https://ieeexplore.ieee.org/author/37275353200
    ID: 37275353200
    Order: 2
    Author Affiliations:
    • Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China
  • Author Name: C. Shi
    Affiliation: Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China
    Author URL: https://ieeexplore.ieee.org/author/37531101100
    ID: 37531101100
    Order: 3
    Author Affiliations:
    • Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China
    • Department of Electrical and Computer Engineering, Oregon State University, Corvallis, OR, USA

Image Sensor

• sensor_type: CMOS
• resolution: 32 x 32 pixels
• dynamic_range: 84.9 dB
• pixel_size: 15 µm
• dark_current: 4.36 nA/cm²

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• frame_rate: 21 fps
• power_consumption: 0.735 nW/pixel/frame at full resolution
• noise: 18.42% FPN after CDS

Applications & Benefits

• cell_imaging: Wireless image sensor networks for applications such as environmental surveillance, structural health monitoring, military reconnaissance, and medical treatment assistance.
• benefits: Low-power operation, energy harvesting capability, reconfigurable resolution, two-level quantization for reduced power consumption.

Supporting Organizations

• supported_by: Research Grant Council of Hong Kong under CERG Grant 610507 and Grant 610509

Manuscript Details

• publication_date: Feb. 2011

Relevancy Score

• score: 8
• missing_fields:
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed

Processed JSON Filename

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