rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: A
    title: single-chip real-time range finder
  name:
    name part: Chen, Sicheng
    name part: 1974-
    role:
      role term: creator
  name:
    name part: Çilingiroğlu, Uğur
    role:
      role term: thesis advisor.
  name:
    name part: Sánchez-Sinencio, Edgar
    role:
      role term: thesis advisor.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2003
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Range finding are widely used in various industrial applications, such as machine vision, collision avoidance, and robotics. Presently most range finders either rely on active transmitters or sophisticated mechanical controllers and powerful processors to extract range information, which make the range finders costly, bulky, or slowly, and limit their applications. This dissertation is a detailed description of a real-time vision-based range sensing technique and its single-chip CMOS implementation. To the best of our knowledge, this system is the first single chip vision-based range finder that doesn't need any mechanical position adjustment, memory or digital processor. The entire signal processing on the chip is purely analog and occurs in parallel. The chip captures the image of an object and extracts the depth and range information from just a single picture. The on-chip, continuous-time, logarithmic photoreceptor circuits are used to couple spatial image signals into the range-extracting processing network. The photoreceptor pixels can adjust their operating regions, simultaneously achieving high sensitivity and wide dynamic range. The image sharpness processor and Winner-Take-All circuits are characterized and analyzed carefully for their temporal bandwidth and detection performance. The mathematical and optical models of the system are built and carefully verified. A prototype based on this technique has been fabricated and tested. The experimental results prove that the range finder can achieve acceptable range sensing precision with low cost and excellent speed performance in short-to-medium range coverage. Therefore, it is particularly useful for collision avoidance.
  note: by Sicheng Chen.
  note: "Major Subject: Electrical Engineering"
  note: Title from author supplied metadata.
  note: Electronic resource.
  note: Ph. D. Texas A & M University 2003.
  note: Includes bibliographical references.
  note: Text (Dissertation).
  subject:
    topic: Major electrical engineering
  subject:
    topic: range finder
  subject:
    topic: analog
  subject:
    topic: real-time
  subject:
    topic: vision-based
  subject:
    topic: single-chip
  subject:
    topic: optical system
  identifier: http://hdl.handle.net/1969.1/553
  record info:
    record content source: TXA
    record creation date: 030911
    record change date: 20151025094915.0
    record identifier: in00001766515