CH548069A - Schaltung zur schwellenwertbildung. - Google Patents

Schaltung zur schwellenwertbildung.

Info

Publication number
CH548069A
CH548069A CH415273A CH415273A CH548069A CH 548069 A CH548069 A CH 548069A CH 415273 A CH415273 A CH 415273A CH 415273 A CH415273 A CH 415273A CH 548069 A CH548069 A CH 548069A
Authority
CH
Switzerland
Prior art keywords
thresholding
circuit
Prior art date
Application number
CH415273A
Other languages
German (de)
English (en)
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of CH548069A publication Critical patent/CH548069A/xx

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/16—Image preprocessing
    • G06V30/162—Quantising the image signal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
CH415273A 1972-03-25 1973-03-22 Schaltung zur schwellenwertbildung. CH548069A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2214658A DE2214658C3 (de) 1972-03-25 1972-03-25 Schaltung zur Schwellenwertbüdung

Publications (1)

Publication Number Publication Date
CH548069A true CH548069A (de) 1974-04-11

Family

ID=5840160

Family Applications (1)

Application Number Title Priority Date Filing Date
CH415273A CH548069A (de) 1972-03-25 1973-03-22 Schaltung zur schwellenwertbildung.

Country Status (7)

Country Link
US (1) US3833883A (ja)
JP (1) JPS4915324A (ja)
BE (1) BE797210A (ja)
CH (1) CH548069A (ja)
DE (1) DE2214658C3 (ja)
FR (1) FR2178628A5 (ja)
NL (1) NL7304041A (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337455A (en) * 1978-04-21 1982-06-29 Caere Corporation Apparatus for processing video signals received from an optical scanner
GB2098774B (en) * 1979-07-20 1984-02-01 Sumitomo Electric Industries Binary coding circuit
US4442544A (en) * 1981-07-09 1984-04-10 Xerox Corporation Adaptive thresholder
JPS59106079A (ja) * 1982-12-10 1984-06-19 Omron Tateisi Electronics Co 図形照合装置の二値化装置
JPH0658262B2 (ja) * 1983-04-22 1994-08-03 カシオ計算機株式会社 カラーグラフィックデータ処理装置
US4644410A (en) * 1985-03-11 1987-02-17 R. A. McDonald Dynamic threshold binary generator
US4857903A (en) * 1986-05-06 1989-08-15 Summagraphics Corporation Electro-optical mouse with improved resolution for compensation of optical distortion
US4807166A (en) * 1986-09-19 1989-02-21 Summagraphics Corporation Method and apparatus for calibrating an electro-optical mouse

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3560931A (en) * 1969-03-26 1971-02-02 Ibm Circuitry to improve resolution in character recognition
US3701099A (en) * 1971-06-08 1972-10-24 Ibm Dynamic discrimination reference level generator for a parallel channel optical document scanner

Also Published As

Publication number Publication date
FR2178628A5 (ja) 1973-11-09
DE2214658A1 (de) 1973-10-04
US3833883A (en) 1974-09-03
JPS4915324A (ja) 1974-02-09
DE2214658C3 (de) 1974-12-19
DE2214658B2 (de) 1974-05-16
NL7304041A (ja) 1973-09-27
BE797210A (fr) 1973-07-16

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Legal Events

Date Code Title Description
PL Patent ceased