A 256 256Pixel Smart Cmos Image Sensor For Line Based Stereo Vision Applications

• doi:
• title: A 256 × 256-pixel smart CMOS image sensor for line based stereo vision applications
• publisher: IEEE
• isbn:
• issn:
• rank: 375
• access_type: LOCKED
• content_type: Conferences
• abstract: This paper presents a 256×256-pixel smart CMOS image sensor destined to line based vision applications. By combining the edge based analog processing technique with active pixel CMOS image sensor matrix, a dense and fast image processing has been achieved. The on-chip processing includes: 1° analog histogram equlizer; 2° programmable recursive Gaussian filter; 3° a spatio-temporal differentiator; and 4° a local extrema extractor. A moving blade shutter is applied to the APS matrix in order to adapt the exposure time according to global illumination level. The on-chip, histogram equlizer can extend the image contrast to a constant and optimal range for all the following processing operators. This local image signal regularization gives a constant signal amplitude and permits a stable and predictable precision of other analog signal processing. A prototype chip has been designed and fabricated in a standard 0.8µ CMOS process with double poly and double metal. The pixel pitch is fixed at 20µm and gives a total chip area of about 7×7mm2. A line processing time is measured at 50µS and a frame rate of 50 can be easily obtained. The worst case power consumption is measured at 40mA @ 5V.
• article_number: 1471145
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1471145
• html_url: https://ieeexplore.ieee.org/document/1471145/
• abstract_url: https://ieeexplore.ieee.org/document/1471145/
• publication_title: Proceedings of the 25th European Solid-State Circuits Conference
• conference_location: Duisburg, Germany
• conference_dates: 21-23 Sept. 1999
• publication_number: 9918
• is_number: 31527
• publication_year: 1999
• publication_date: 21-23 Sept. 1999
• start_page: 258
• end_page: 261
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 95
• insert_date: 20050801
• index_terms:
  • ieee_terms:
    • CMOS image sensors
    • Stereo vision
    • Signal processing
    • Histograms
    • Semiconductor device measurement
    • Pixel
    • Image processing
    • Filters
    • Blades
    • Lighting
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Vision Applications
    • Stereopsis
    • Stereoscopic Vision
    • Stereovision
    • Pixel Pitch
    • Visual Features
    • Visual Characteristics
    • Gaussian Filter
    • Histogram Equalization
• authors:
  • Author Name: Yang Ni
    Affiliation: Institut National de Télécommunications, Evry, France
    Author URL: https://ieeexplore.ieee.org/author/37087354104
    ID: 37087354104
    Order: 1
    Author Affiliations:
    • Institut National de Télécommunications, Evry, France
  • Author Name: J.H. Guan
    Affiliation: Institut National de Télécommunications, Evry, France
    Author URL: https://ieeexplore.ieee.org/author/37416320600
    ID: 37416320600
    Order: 2
    Author Affiliations:
    • Institut National de Télécommunications, Evry, France

Image Sensor

• sensor_type: CMOS
• resolution: 256x256 pixels
• dynamic_range: 40dB
• pixel_size: 20µm
• dark_current: not specified

Optical Data

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

Performance Metrics

• frame_rate: 50 fps
• power_consumption: 40mW

Applications & Benefits

• cell_imaging: suitable for line based stereo vision applications
• benefits: fast image processing with on-chip processing capabilities, stable and predictable precision of analog signal processing

Supporting Organizations

• supported_by: Institut National des T6ltkommunications

Manuscript Details

• publication_date: 21-23 Sept. 1999

Relevancy Score

• score: 9
• missing_fields:
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed
  • noise

Processed JSON Filename

request_2535ee96-4354-4569-9fca-dbe2fb6e20e0-a_256__256pixel_smart_cmos_image_sensor_for_line_based_stereo_vision_applications.json