FR2397023A1 - - Google Patents

Info

Publication number
FR2397023A1
FR2397023A1 FR7820049A FR7820049A FR2397023A1 FR 2397023 A1 FR2397023 A1 FR 2397023A1 FR 7820049 A FR7820049 A FR 7820049A FR 7820049 A FR7820049 A FR 7820049A FR 2397023 A1 FR2397023 A1 FR 2397023A1
Authority
FR
France
Prior art keywords
scan
image
scanned
binary
line
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.)
Withdrawn
Application number
FR7820049A
Other languages
French (fr)
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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
Priority claimed from US05/813,561 external-priority patent/US4143401A/en
Priority claimed from US05/828,057 external-priority patent/US4258394A/en
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of FR2397023A1 publication Critical patent/FR2397023A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/20—Contour coding, e.g. using detection of edges
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/12—Edge-based segmentation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2200/00—Indexing scheme for image data processing or generation, in general
    • G06T2200/28—Indexing scheme for image data processing or generation, in general involving image processing hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence

Abstract

Le système se rapporte à un circuit binaire pour détecter le bords d'une image contrastée et pour les reproduire en trait pleins. Chaque ligne de l'information vidéo obtenue par balayage de l'image est chiffrée par un convertisseur analogique-numétique 21; chaque échantillon binaire est comparé à un échantillon à retard déterminé pour produire un signal de différence impliquant une variation de l'échelle de gris dans une direction perpendiculaire au balayage. Les échantillons binaires du signa vidéo sont stockés dans une mémoire 33 permettant de stocke les informations représentant plusieurs lignes balayées. De échantillons sélectionnés d'informations stockées sont comparées à ceux de la ligne balayée pour détecter les variations de l'échelle de gris dans une direction parallèle au balayage Ce variations détectées sont combinées pour engendrer un signal actionnant une imprimante 44 créant un dessin à lignes de l'image balayée. Le système est sensible à des composantes de bords paralléles aux lignes de balayage d'un récepteur classique à analyse d'image.The system relates to a binary circuit to detect the edges of a contrasting image and to reproduce them in solid lines. Each line of the video information obtained by scanning the image is encrypted by an analog-to-digital converter 21; each binary sample is compared with a determined delay sample to produce a difference signal involving a variation of the gray scale in a direction perpendicular to the scan. The binary samples of the video signal are stored in a memory 33 making it possible to store the information representing several lines scanned. Selected samples of stored information are compared with those of the scanned line to detect variations in the gray scale in a direction parallel to the scan. These detected variations are combined to generate a signal operating a printer 44 creating a line pattern. the scanned image. The system is sensitive to edge components parallel to the scan lines of a conventional image analysis receiver.

FR7820049A 1977-07-07 1978-07-05 Withdrawn FR2397023A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/813,561 US4143401A (en) 1977-07-07 1977-07-07 System for generating line drawing of a scanned image
US05/828,057 US4258394A (en) 1977-08-26 1977-08-26 Digital circuit for accurately detecting changes in the gray scale of a scanned image

Publications (1)

Publication Number Publication Date
FR2397023A1 true FR2397023A1 (en) 1979-02-02

Family

ID=27123758

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820049A Withdrawn FR2397023A1 (en) 1977-07-07 1978-07-05

Country Status (8)

Country Link
JP (1) JPS5418245A (en)
BE (1) BE868835A (en)
DE (1) DE2830001A1 (en)
ES (1) ES471476A1 (en)
FR (1) FR2397023A1 (en)
GB (1) GB2001503B (en)
GR (1) GR64547B (en)
IL (1) IL54903A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460580A1 (en) * 1979-06-29 1981-01-23 France Etat DEVICE FOR TRACKING AND ESTIMATING RECURSIVE LOCAL STATUS OF IMAGE CONTOURS AND APPLICATION TO ADAPTIVE PREDICTION IN DIFFERENTIAL CODING OF TELEVISION SIGNALS
JPS5887666A (en) * 1981-11-19 1983-05-25 Matsushita Electric Ind Co Ltd Picture input device
DE3771139D1 (en) * 1986-07-08 1991-08-08 Mita Industrial Co Ltd ELECTROPHOTOGRAPHIC COPYING METHOD AND INSULATING PAPER FOR USE THEREFOR.
GB9317600D0 (en) * 1993-08-24 1993-10-06 Downs Roger C Image pattern thread processor
GB2295741B (en) * 1993-08-24 1998-09-09 Downs Roger C Topography processor system
WO1995006283A1 (en) 1993-08-24 1995-03-02 Downs Roger C Topography processor system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/75 *

Also Published As

Publication number Publication date
GR64547B (en) 1980-04-12
JPS5418245A (en) 1979-02-10
IL54903A (en) 1980-05-30
GB2001503B (en) 1982-01-27
GB2001503A (en) 1979-01-31
BE868835A (en) 1979-01-08
ES471476A1 (en) 1979-10-01
IL54903A0 (en) 1978-08-31
DE2830001A1 (en) 1979-01-25

Similar Documents

Publication Publication Date Title
US3278685A (en) Wave analyzing system
US4736109A (en) Coded document and document reading system
GB2166921A (en) Dual-mode image processing
FR2455409A1 (en) CONVERSION CIRCUIT FOR IMAGE REPRODUCTION
FR2407531A1 (en) CHARACTER RECOGNITION DEVICE
FR2438302A1 (en) PORTABLE LASER ANALYZER AND METHOD FOR EVALUATING AND VALIDATING SYMBOLS IN STICK CODE
ATE114186T1 (en) POSITION MEASUREMENT DEVICE WITH SEVERAL SENSING POINTS.
CA1174747A (en) Pitch matching detecting and counting system
GB2085254A (en) Micro-calcification detection
FR2430699A1 (en) METHOD AND APPARATUS FOR READING AND WRITING WITH ELECTRONIC VARIATION OF IMAGE SIZE
BE900325A (en) PHONO- AND ELECTROCARDIOGRAPHER.
FR2397023A1 (en)
ATE88587T1 (en) METHODS OF RECOGNIZING CHARACTERS AND OBJECTS.
DE59702543D1 (en) METHOD FOR NON-DESTRUCTIVE THREE-DIMENSIONAL DETECTION OF STRUCTURES IN CONSTRUCTIONS
KR890004249A (en) Shading Correction Method
KR900002989B1 (en) Automatic tracking device
GB1062940A (en) Figure recognizing system
GB1324727A (en) Centre referenced character identification
FR2752461B1 (en) METHOD AND DEVICE FOR THE PROCESSING OF REPRESENTATIVE SIGNALS OF WAVES REFLECTED OR TRANSMITTED BY A VOLUME STRUCTURE WITH A VIEW TO PERFORMING AN EXPLORATION AND ANALYSIS OF THE STRUCTURE
FR2430850A1 (en) PHOTOCOMPOSITION SYSTEM PROVIDING A FRAMED COPY OF AN ORIGINAL IMAGE, AND METHOD FOR OBTAINING A FRAMED COPY
JPH0266446A (en) Method for inspecting surface defect
JPS632926Y2 (en)
JPS629956B2 (en)
SU285968A1 (en) METHOD OF DIVIDING THE NUMBER OF PARTICLES BY SIZE
JP2513488Y2 (en) Envelope extraction device

Legal Events

Date Code Title Description
ST Notification of lapse