GB1371250A - Character-scanning device - Google Patents

Character-scanning device

Info

Publication number
GB1371250A
GB1371250A GB1867972A GB1867972A GB1371250A GB 1371250 A GB1371250 A GB 1371250A GB 1867972 A GB1867972 A GB 1867972A GB 1867972 A GB1867972 A GB 1867972A GB 1371250 A GB1371250 A GB 1371250A
Authority
GB
United Kingdom
Prior art keywords
areas
character
cells
april
photo
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
GB1867972A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1371250A publication Critical patent/GB1371250A/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
    • G06V10/20—Image preprocessing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/32—Normalisation of the pattern dimensions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/88—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)

Abstract

1371250 Character recognition systems ARTHUR KLEMT KG 21 April 1972 [23 April 1971] 18679/72 Heading G4R A character to be recognized is scanned by an array of photo-cells whose outputs are connected to resistor networks. The character field is regarded as being divided into a rectangular matrix of n x m elementary areas. The resistor networks receive signals from 9 groups of areas arranged as a 3 x 3 matrix. In the case of 6 x 3 areas, each signal represents the sum of the intensity of the light received from a respective pair of the elementary areas. Thus group A corresponds to areas 1 and 4, group B to areas 2 and 5, &c. The pairs of areas may be viewed by 9 respective light guides whose entry faces are shaped to view the respective areas, their exit faces being directed to corresponding photocells. Alternatively the photo-cells themselves may be so shaped that each views two areas, or each area may be viewed by a respective photocell, pairs of cells being connected in parallel to provide the 9 signals to the recognition circuits. Because of the effective size of the groups of areas A-J the system is tolerant to off-centred characters, Fig. 6 (not shown).
GB1867972A 1971-04-23 1972-04-21 Character-scanning device Expired GB1371250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712119796 DE2119796A1 (en) 1971-04-23 1971-04-23 Method and device for raster-shaped scanning of standard characters, in particular digits

Publications (1)

Publication Number Publication Date
GB1371250A true GB1371250A (en) 1974-10-23

Family

ID=5805620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1867972A Expired GB1371250A (en) 1971-04-23 1972-04-21 Character-scanning device

Country Status (7)

Country Link
CH (1) CH543775A (en)
DD (1) DD100813A1 (en)
DE (1) DE2119796A1 (en)
FR (1) FR2136656A5 (en)
GB (1) GB1371250A (en)
IT (1) IT954719B (en)
NL (1) NL7205337A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH041519A (en) * 1990-04-18 1992-01-07 Mitsubishi Electric Corp Image comparing system

Also Published As

Publication number Publication date
CH543775A (en) 1973-10-31
DD100813A1 (en) 1973-10-05
IT954719B (en) 1973-09-15
DE2119796A1 (en) 1972-11-02
FR2136656A5 (en) 1972-12-22
NL7205337A (en) 1972-10-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee