GB1324633A - Apparatus for area measurement - Google Patents

Apparatus for area measurement

Info

Publication number
GB1324633A
GB1324633A GB1324633DA GB1324633A GB 1324633 A GB1324633 A GB 1324633A GB 1324633D A GB1324633D A GB 1324633DA GB 1324633 A GB1324633 A GB 1324633A
Authority
GB
United Kingdom
Prior art keywords
level
areas
measurement
july
counter
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
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.)
Bangor University
Original Assignee
Bangor University
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 Bangor University filed Critical Bangor University
Publication of GB1324633A publication Critical patent/GB1324633A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/32—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring areas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

1324633 Measuring area UNIVERSITY COLLEGE OF NORTH WALES 31 July 1970 [31 July 1969] 38564/69 Heading G4H Apparatus for the measurement of areas includes a T.V. camera 4 deriving, by scanning, a video signal which exceeds a predetermined amplitude level when the scan is over the areas to be measured, pulses from a generator 11 being counted in a counter 13 when the level is exceeded. As described for measuring blight or insect damage on leaves, a filter 17 is used to enhance the colour contrast of the brown diseased portion and the green portion. Discriminator 7 blocks all signals below the predetermined level, this level being manually adjusted by superimposing the counted pulses on the video signal to control a monitor 15, the brightness level of the dots displayed being viewed to determine a suitable discriminating level. The counter is enabled for 1 second to measure the area during several scans, the count being displayed, printed, recorded or used to control an integrating analogue meter. The apparatus may be used for the measurement of areas of irregular shape such as chemical particles or biological specimens.
GB1324633D 1970-07-31 1970-07-31 Apparatus for area measurement Expired GB1324633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3856469 1970-07-31

Publications (1)

Publication Number Publication Date
GB1324633A true GB1324633A (en) 1973-07-25

Family

ID=10404299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1324633D Expired GB1324633A (en) 1970-07-31 1970-07-31 Apparatus for area measurement

Country Status (1)

Country Link
GB (1) GB1324633A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160865U (en) * 1974-11-07 1976-05-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160865U (en) * 1974-11-07 1976-05-13
JPS596402Y2 (en) * 1974-11-07 1984-02-28 日本無線株式会社 Kouden Kenshitsugatazukaimen Sekikei Sokuuchi

Similar Documents

Publication Publication Date Title
US4218707A (en) Thermographic areameter
GB1318701A (en) Methods of waveform analysis and apparatus therefor
FR2455274A1 (en) MEASURING METHOD AND DEVICE FOR DETERMINING DEFECTS ON PRINTED SHEETS AND STRIPS
GB1346486A (en) Method and apparatus for densitometric analysis
GB1350096A (en) Use of sensing arrangements of the electronic raster-scanning kind in the investigation of a field of view
JPS5618422A (en) Measuring method for diameter of electron beam
GB922035A (en) Infrared dimensional gauge
GB1521303A (en) Ultrasonic non-destructive pulse testing apparatus
GB1324633A (en) Apparatus for area measurement
GB977158A (en)
GB1411546A (en) Visual display of information
GB1316201A (en) Dimensional measurement
ES396366A1 (en) Axial trajectory sensor having gating means controlled by pulse duration measuring for electronic particle study apparatus and method
DE69009179T2 (en) DEVICE FOR ACOUSTIC SENSING.
DE3321911C2 (en) Image information output device
GB1034237A (en) Method and apparatus for the automatic evaluation of graphically recorded curves
JPS53117928A (en) Automatic measuring device for television screen
DE1523248A1 (en) Method for determining the wind vector with sound signals
IL39769A (en) A soil testing device
JPS5580013A (en) Signal measuring device
JPS541624A (en) Distortion detector of recording images
JPS5233788A (en) Signal identification apparatus in ae signal position detection appara tus
SE8105050L (en) METHOD PROCEDURE AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE
SU786062A1 (en) Television device for analysis of temperature fields and objects
DE948559C (en) Arrangement for speed measurement by means of acoustic waves using the Doppler effect

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees