A High Dynamic Range Cmos Image Sensor With A Novel Pixellevel Logarithmic Counter Memory

• doi: 10.1109/KBEI.2015.7436014
• title: A high dynamic range CMOS image sensor with a novel pixel-level logarithmic counter memory
• publisher: IEEE
• isbn: 978-1-4673-6505-5
• issn:
• rank: 1075
• access_type: LOCKED
• content_type: Conferences
• abstract: In this paper, we propose a CMOS image sensor that exploits multiple capture and spatially varying pixel exposures to achieve a dynamic range of 155 dB, 95 dB higher than a conventional CMOS image sensor. The proposed sensor also utilizes a novel pixel-level counter memory to enhance the sensor's dynamic range and fill factor. Here, the logarithms of counter values used in measurements of incident light intensities are approximated and stored in memory within each pixel. Since these logarithmic values can be represented by a smaller number of bits, each pixel has a smaller area dedicated to memory, allowing a higher fill factor. The proposed CMOS image sensor is well suited to outdoor automotive and mobile robotic applications.
• article_number: 7436014
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7436014
• html_url: https://ieeexplore.ieee.org/document/7436014/
• abstract_url: https://ieeexplore.ieee.org/document/7436014/
• publication_title: 2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI)
• conference_location: Tehran, Iran
• conference_dates: 5-6 Nov. 2015
• publication_number: 7430175
• is_number: 7435986
• publication_year: 2015
• publication_date: 5-6 Nov. 2015
• start_page: 14
• end_page: 19
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 308
• insert_date: 20160321
• index_terms:
  • ieee_terms:
    • Decision support systems
    • Dynamic range
    • Image sensors
    • Radiation detectors
  • author_terms:
    • CMOS image sensor
    • fill factor
    • high dynamic range
    • logarithmic approximation
    • multiple capture
    • spatially varying pixel exposures
  • dynamic_index_terms:
    • Dynamic Range
    • Image Sensor
    • Camera Sensor
    • High Dynamic Range
    • Counter Memory
    • Logarithm
    • Log Transformed
    • Logarithmic Transformation
    • Small Area
    • Light Intensity
    • Conventional Imaging
    • Fill Factor
    • Incident Intensity
    • Incident Light Intensity
    • Conventional Sensors
    • High Fill Factor
    • Counter Value
    • Maximum And Minimum
    • Stationary Point
    • Extreme Values
    • Extremal
    • Sampling Time
    • End Of Period
    • Use Of Systems
    • Circuitry
    • Final Value
    • Filter Array
    • Photocurrent
    • Exposure Values
    • Sample Pixels
    • Signal Values
    • Integration Of Signals
    • Pixel Area
    • Output Image
    • Digital Imaging System
    • Digital Signal Processing
• isbn_formats:
  • format: CD, value: 978-1-4673-6505-5, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-4673-6506-2, isbnType: New-2005
• authors:
  • Author Name: Saul D. Freedman
    Affiliation: School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, Australia
    Author URL: https://ieeexplore.ieee.org/author/37085783806
    ID: 37085783806
    Order: 1
    Author Affiliations:
    • School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, Australia
  • Author Name: Farid Boussaid
    Affiliation: School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, Australia
    Author URL: https://ieeexplore.ieee.org/author/37265532500
    ID: 37265532500
    Order: 2
    Author Affiliations:
    • School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, Australia

Image Sensor

• sensor_type: CMOS
• resolution: varies
• dynamic_range: greater than that of a conventional CMOS
• pixel_size: smaller sizes specified in micrometers (µm)
• dark_current: reported but specific values not extracted in the text (e-/s)

Optical Data

• focal_length: not specified
• aperture: not specified
• field_of_view: not specified
• distortion: not specified

Performance Metrics

• signal_to_noise_ratio: reported but specific values not extracted in the text (dB)
• noise: reported, with specific types mentioned (e-)

Applications & Benefits

• cell_imaging: various applications including smartphones, sensors, and automotive systems.
• benefits: providing high-quality imaging solutions in digital imaging.

Supporting Organizations

• supported_by: not specified

Manuscript Details

• publication_date: 5-6 Nov. 2015

Relevancy Score

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

Processed JSON Filename

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