GB934847A - Recognition apparatus - Google Patents

Recognition apparatus

Info

Publication number
GB934847A
GB934847A GB29982/58D GB2998258D GB934847A GB 934847 A GB934847 A GB 934847A GB 29982/58 D GB29982/58 D GB 29982/58D GB 2998258 D GB2998258 D GB 2998258D GB 934847 A GB934847 A GB 934847A
Authority
GB
United Kingdom
Prior art keywords
character
value
resistors
signals
amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB29982/58D
Inventor
Wilfred Kenelm Taylor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB29982/58D priority Critical patent/GB934847A/en
Priority to FR805421A priority patent/FR1240155A/en
Publication of GB934847A publication Critical patent/GB934847A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
    • G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Evolutionary Computation (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Software Systems (AREA)
  • Databases & Information Systems (AREA)
  • Computing Systems (AREA)
  • Artificial Intelligence (AREA)
  • Health & Medical Sciences (AREA)
  • Character Input (AREA)

Abstract

934,847. Automatic character reading. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 18, 1959 [Sept. 18, 1958], No. 29982/58. Class 106 (1). In a character recognition apparatus the image of the character is projected on to a coordinate array of photo-cells and a selection of the photo-cell outputs is taken for each character, the selected signals being added in resistors 12A-12D, half the total of all the signals being subtracted and the difference divided by the number of photo-cells in the corresponding set. The highest signal is determined to identify the character. As described the array consists of nine rows and nine columns, the outputs appearing on 81 terminals T1-T81. All terminals are connected through resistors 17, value R, to an amplifier G F having a feedback resistor 18, value R/81. The resulting output is applied through resistors 19-22, value 2R/81, to the inputs of amplifiers G A -G D receiving the summed signals from the several selected combinations. The value of resistors 12A-12D is also R and the signal from amplifier G F is of opposite polarity so that each amplifier G A - G D receives the difference between the summed signals of the selected group and half the total value. Each amplifier also has a feedback resistor 13-16 having a value of R divided by the number in the selected group, e.g. R/27 for letter "A." This normalizes the signals so that they are comparable. Amplifiers H A -H D " determine which output is greatest by subtracting a signal derived from the outputs through resistors 23-26. Only one output should be positive and this fires a thyratron T A -T D to set a relay R A -R D . To compensate for different character shapes and different possible positions a series of sets of the transducer terminals T1-T81 may be selected for each character and highest output, taken through a diode Or gate, is then modified by amplifiers G A -G D as before.
GB29982/58D 1958-09-18 1958-09-18 Recognition apparatus Expired GB934847A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB29982/58D GB934847A (en) 1958-09-18 1958-09-18 Recognition apparatus
FR805421A FR1240155A (en) 1958-09-18 1959-09-18 Apparatus for identifying designs, for example letters or printed characters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29982/58D GB934847A (en) 1958-09-18 1958-09-18 Recognition apparatus

Publications (1)

Publication Number Publication Date
GB934847A true GB934847A (en) 1963-08-21

Family

ID=10300348

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29982/58D Expired GB934847A (en) 1958-09-18 1958-09-18 Recognition apparatus

Country Status (2)

Country Link
FR (1) FR1240155A (en)
GB (1) GB934847A (en)

Also Published As

Publication number Publication date
FR1240155A (en) 1960-09-02

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