A Continuous Time Pattern Recognition Retina

• doi:
• title: A continuous time pattern recognition retina
• publisher: IEEE
• isbn:
• issn:
• rank: 1030
• access_type: LOCKED
• content_type: Conferences
• abstract: We present in this paper a pattern recognition retina operating in continuous time. During a programming phase, the reference image is acquired by the sensor. After thresholding, the resulting binary image is stored in the sensor's pixels. During the recognition phase, the retina calculates, in an analog way and in continuous time, the zero displacement intercorrelation of the current image with the binary reference image and its complement. These two intercorrelation values are output as currents. By comparing these currents to expected values, determined during the programming phase, a shift of the pattern or a difference between the observed and programmed pattern can be detected. A 100×100 pixels validation chip was fabricated using a standard CMOS triple level metal 0.6µm process. Characterization results are presented.
• article_number: 1471628
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1471628
• html_url: https://ieeexplore.ieee.org/document/1471628/
• abstract_url: https://ieeexplore.ieee.org/document/1471628/
• publication_title: Proceedings of the 28th European Solid-State Circuits Conference
• conference_location: Florence, Italy
• conference_dates: 24-26 Sept. 2002
• publication_number: 9921
• is_number: 31530
• publication_year: 2002
• publication_date: 24-26 Sept. 2002
• start_page: 719
• end_page: 722
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 58
• insert_date: 20050801
• index_terms:
  • ieee_terms:
    • Pattern recognition
    • Retina
    • Image sensors
    • Pixel
    • Circuits
    • Image recognition
    • CMOS process
    • Phase detection
    • CMOS image sensors
    • Silicon
  • dynamic_index_terms:
    • Pattern Recognition
    • Continuous-time
    • Continuous Signal
    • Binary Image
    • Reference Image
    • Recognition Phase
    • Standard CMOS
    • Comparable Results
    • Comparison Results
    • Light Source
    • Binary Data
    • Binary Values
    • Spectral Power
    • Radiation Power
    • Radiative Flux
    • Irradiation Power
    • Geometric Shapes
    • Geometric Figures
    • Inverter
    • Output Current
    • Spectral Response
    • Test Pattern
    • Test Card
    • Current Threshold
    • Saturation Current
    • White Pixels
    • Pixel Features
    • Characteristics Of Pixels
    • Spatial Shift
    • Pixel Array
    • Minimum Surface Area
    • Bolometer
    • Current Mirror
    • Simple Geometric Shapes
    • Electronic Switches
    • Photodiode
    • Switching Circuit
• authors:
  • Author Name: G. Cathebras
    Affiliation: LIRMM - Université Montpellier II, Montpellier, FRANCE
    Author URL: https://ieeexplore.ieee.org/author/37268669700
    ID: 37268669700
    Order: 1
    Author Affiliations:
    • LIRMM - Université Montpellier II, Montpellier, FRANCE
  • Author Name: D. Navarro
    Affiliation: LIRMM - Université Montpellier II, Montpellier, FRANCE
    Author URL: https://ieeexplore.ieee.org/author/38199261000
    ID: 38199261000
    Order: 2
    Author Affiliations:
    • LIRMM - Université Montpellier II, Montpellier, FRANCE
  • Author Name: O. Aubreton
    Affiliation: Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
    Author URL: https://ieeexplore.ieee.org/author/37294912500
    ID: 37294912500
    Order: 3
    Author Affiliations:
    • Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
  • Author Name: B. Bellach
    Affiliation: Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
    Author URL: https://ieeexplore.ieee.org/author/37085806700
    ID: 37085806700
    Order: 4
    Author Affiliations:
    • Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
  • Author Name: P. Gorria
    Affiliation: Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
    Author URL: https://ieeexplore.ieee.org/author/37295678500
    ID: 37295678500
    Order: 5
    Author Affiliations:
    • Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
  • Author Name: B. Lamalle
    Affiliation: Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
    Author URL: https://ieeexplore.ieee.org/author/37294931000
    ID: 37294931000
    Order: 6
    Author Affiliations:
    • Laboratoire LE2I - Université de Bourgogne, Le Creusot, FRANCE
  • Author Name: L.F.C. Lew
    Affiliation:
    Author URL: https://ieeexplore.ieee.org/author/37087381561
    ID: 37087381561
    Order: 7
    
  • Author Name: Yan Voon
    Affiliation:
    Author URL: https://ieeexplore.ieee.org/author/37087381427
    ID: 37087381427
    Order: 8
    

Image Sensor

• sensor_type: CMOS
• resolution: 100x100 pixels
• dynamic_range: Not specified
• pixel_size: 50.6x50.6 µm
• dark_current: 9 nA

Optical Data

• focal_length: 25 mm
• aperture: Not specified
• field_of_view: 16x16 cm
• distortion: Not specified

Performance Metrics

• frame_rate: 720 Hz
• sensitivity: 0.23 A/W at 550 nm

Applications & Benefits

• cell_imaging: The sensor can be used for real-time pattern recognition and spatial shift detection, suitable for applications like smartphones and medical devices.
• benefits: Provides real-time pattern detection capabilities, allowing for quick recognition and response.

Supporting Organizations

• supported_by: LIRMM - Université Montpellier II, Laboratoire LE2I - Université de Bourgogne

Manuscript Details

• publication_date: 24-26 Sept. 2002

Relevancy Score

• score: 9
• missing_fields:
  • dynamic_range
  • field_of_view
  • distortion
  • aperture
  • shutter_speed
  • power_consumption
  • signal_to_noise_ratio

Processed JSON Filename

request_6c3281e1-864d-4e14-b033-5cb9324ba719-a_continuous_time_pattern_recognition_retina.json