A Wide Dynamic Range Cmos Image Sensor With The Optimum Photoresponse Per Pixel

• doi: 10.1109/ISCAS.2011.5937874
• title: A wide dynamic range CMOS image sensor with the optimum photoresponse per pixel
• publisher: IEEE
• isbn: 978-1-4244-9472-9
• issn: 0271-4302
• partnum: 11CH38807
• rank: 1343
• access_type: LOCKED
• content_type: Conferences
• abstract: A 100 × 100 CMOS image sensor (CIS) occupying an area of 2.25 mm2 fabricated in a standard 0.35-μm CMOS technology is described. A back to back pixel layout with pixel dimension of 10 μm × 10 μm and a fill factor of 41% is achieved. The pixels in the CIS integrate the photocurrent for time that depends upon the photocurrent to map wide dynamic range (WDR) real world scenes to low DR display medium. Nonlinear functions or tone mapping operators such as the logarithmic function based on the luminance and other pixel parameters is implemented by the CIS. Two methods to optimize the logarithmic tone mapping operator for improved low light performance are proposed and results of their implementation in hardware presented.
• article_number: 5937874
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5937874
• html_url: https://ieeexplore.ieee.org/document/5937874/
• abstract_url: https://ieeexplore.ieee.org/document/5937874/
• publication_title: 2011 IEEE International Symposium of Circuits and Systems (ISCAS)
• conference_location: Rio de Janeiro, Brazil
• conference_dates: 15-18 May 2011
• publication_number: 5910713
• is_number: 5937406
• publication_year: 2011
• publication_date: 15-18 May 2011
• start_page: 1560
• end_page: 1563
• citing_paper_count: 4
• citing_patent_count: 0
• download_count: 385
• insert_date: 20110704
• index_terms:
  • ieee_terms:
    • Pixel
    • Photoconductivity
    • Capacitance
    • Arrays
    • Dynamic range
    • Transistors
    • Sensitivity
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Logarithm
    • Log Transformed
    • Logarithmic Transformation
    • Low Light
    • Hardware Implementation
    • Logging Operations
    • Logarithm Operation
    • Maximum Time
    • Integration Time
    • Photodiode
    • Light Levels
    • Effective Capacity
    • Effective Capacitance
    • Current Reference
    • Global Operations
    • Low Light Levels
    • Pixel Array
    • Readout Circuit
• isbn_formats:
  • format: Online ISBN, value: 978-1-4244-9472-9, isbnType: New-2005
  • format: Print ISBN, value: 978-1-4244-9473-6, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-4244-9474-3, isbnType: New-2005
• authors:
  • Author Name: Dipayan Das
    Affiliation: Department of Engineering Science, University of Oxford, Oxford, UK
    Author URL: https://ieeexplore.ieee.org/author/37531966900
    ID: 37531966900
    Order: 1
    Author Affiliations:
    • Department of Engineering Science, University of Oxford, Oxford, UK
  • Author Name: Hereward J. Mills
    Affiliation: Department of Engineering Science, University of Oxford, Oxford, UK
    Author URL: https://ieeexplore.ieee.org/author/37709305100
    ID: 37709305100
    Order: 2
    Author Affiliations:
    • Department of Engineering Science, University of Oxford, Oxford, UK
  • Author Name: Steve Collins
    Affiliation: Department of Engineering Science, University of Oxford, Oxford, UK
    Author URL: https://ieeexplore.ieee.org/author/37274573100
    ID: 37274573100
    Order: 3
    Author Affiliations:
    • Department of Engineering Science, University of Oxford, Oxford, UK

Image Sensor

• sensor_type: CMOS
• resolution: 100x100
• dynamic_range: Wide Dynamic Range
• pixel_size: 10µm x 10µm
• dark_current: 2.16fA

Optical Data

• focal_length:
• aperture:
• field_of_view:
• distortion:

Performance Metrics

• frame_rate:
• signal_to_noise_ratio:
• sensitivity: Low light sensitivity
• shutter_speed:
• power_consumption:
• noise:

Applications & Benefits

• cell_imaging: Suitable for medical devices, automotive systems, and general imaging.
• benefits: Wide dynamic range improves image quality in varied lighting conditions.

Supporting Organizations

• supported_by: University of Oxford

Manuscript Details

• publication_date: 15-18 May 2011

Relevancy Score

• score: 10
• missing_fields:
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed
  • power_consumption
  • noise

Processed JSON Filename

request_0d708832-bc87-4486-a6e8-3f4a3dc722f3-a_wide_dynamic_range_cmos_image_sensor_with_the_optimum_photoresponse_per_pixel.json