Exposureprogrammable Cmos Pixel With Selective Charge Storage And Code Memory For Computational Imaging

• doi: 10.1109/TCSI.2017.2763822
• title: Exposure-Programmable CMOS Pixel With Selective Charge Storage and Code Memory for Computational Imaging
• publisher: IEEE
• isbn:
• issn: 1558-0806
• rank: 2441
• access_type: LOCKED
• content_type: Journals
• abstract: Computational imaging, as a rapid emerging field, enables unprecedented photographic capability through the encoding of visual information. Currently, as exposure programming is not support by image sensors, computational cameras use off-chip components to accomplish exposure/encoding optical computations. In this paper, we present a complementary metal-oxide-semiconductor (CMOS) pixel structure with exposure encoding capabilities that enable on-chip computational imaging. As a proof-of-concept, a 10 × 10-pixel prototype chip is fabricated in a 0.13-μm 8-metal 1-poly CMOS process with shared pixel output wires and two 3.3-V power supplies. Each computational pixel is 12.1 μm × 12.2 μm with a fill factor of 33.2%. Measurement results confirm that at a frame rate of 60 f/s, the proposed pixel is capable of performing both temporal and spatial exposure encoding. The proposed pixel design paves a promising path to achieve on-chip temporal-spatial exposure encoding directly on the sensor focal plane for computational imaging.
• article_number: 8089357
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8089357
• html_url: https://ieeexplore.ieee.org/document/8089357/
• abstract_url: https://ieeexplore.ieee.org/document/8089357/
• publication_title: IEEE Transactions on Circuits and Systems I: Regular Papers
• conference_location:
• conference_dates:
• publication_number: 8919
• is_number: 8329291
• publication_year: 2018
• publication_date: May 2018
• start_page: 1555
• end_page: 1566
• citing_paper_count: 10
• citing_patent_count: 0
• download_count: 898
• insert_date: 20171030
• index_terms:
  • ieee_terms:
    • Encoding
    • Photodiodes
    • Cameras
    • Image coding
    • Capacitors
  • author_terms:
    • Computational imaging
    • coded exposure
    • capacitive transimpedance amplifier (CTIA)
    • CMOS image sensor (CIS)
  • dynamic_index_terms:
    • Computer Image
    • Image Calculator
    • Charge Storage
    • Frame Rate
    • Image Sensor
    • Camera Sensor
    • Temperature Exposure
    • Spatial Encoding
    • Output Pixel
    • Photoperiod
    • Exposure Period
    • Grayscale
    • Greyscale
    • Gray Level
    • Power Consumption
    • Total Power
    • Photodetector
    • Control Mode
    • Optical Power
    • Lens Power
    • Refractive Power
    • Voltage Levels
    • Binary Code
    • Charge Accumulation
    • Power Meter
    • Pixel Array
    • Charge Generation
    • Charged Multiplicity
    • Charge Propagation
    • Sensor Pixel
    • Optical Power Meter
    • Dark Current
    • Binary Pattern
    • Noise Performance
• authors:
  • Author Name: Yi Luo
    Affiliation: Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC, Canada
    Author URL: https://ieeexplore.ieee.org/author/37071953500
    ID: 37071953500
    Order: 1
    Author Affiliations:
    • Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC, Canada
  • Author Name: Derek Ho
    Affiliation: Department of Materials Science and Engineering, The City University of Hong Kong, Hong Kong
    Author URL: https://ieeexplore.ieee.org/author/37085801412
    ID: 37085801412
    Order: 2
    Author Affiliations:
    • Department of Materials Science and Engineering, The City University of Hong Kong, Hong Kong
  • Author Name: Shahriar Mirabbasi
    Affiliation: Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC, Canada
    Author URL: https://ieeexplore.ieee.org/author/37269465100
    ID: 37269465100
    Order: 3
    Author Affiliations:
    • Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC, Canada

Image Sensor

• sensor_type: CMOS
• resolution: 10x10 pixels
• dynamic_range: 52 dB
• pixel_size: 12.1µm x 12.2µm
• dark_current: 1.09 fA

Optical Data

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

Performance Metrics

• frame_rate: 60 fps
• signal_to_noise_ratio: 51.5 dB
• sensitivity: 5.0 nW/cm² detection limit
• shutter_speed: 13.28 ms
• power_consumption: ∼7.68 mW
• noise: 5.2 mV read noise

Applications & Benefits

• cell_imaging: Enabling high-speed imaging applications with unique exposure coding for motion deblurring and reconstructing images.
• benefits: The ability to perform both temporal and spatial exposure coding on-chip enhances image quality and offers substantial advantages for computational imaging scenarios.

Supporting Organizations

• supported_by: Research Grants Council of Hong Kong under Project 21200404; Natural Sciences and Engineering Research Council of Canada.

Manuscript Details

• publication_date: May 2018

Relevancy Score

• score: 10

Processed JSON Filename

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