JPS57184908A - Shape detector - Google Patents
Shape detectorInfo
- Publication number
- JPS57184908A JPS57184908A JP6954881A JP6954881A JPS57184908A JP S57184908 A JPS57184908 A JP S57184908A JP 6954881 A JP6954881 A JP 6954881A JP 6954881 A JP6954881 A JP 6954881A JP S57184908 A JPS57184908 A JP S57184908A
- Authority
- JP
- Japan
- Prior art keywords
- comparators
- inputted
- find
- shape
- camera
- 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.)
- Granted
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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE:To perform an easy and reliable inspection of a shape, by a method wherein an image signal is sampled at each picture element to find a difference between image data having a distance of at least 2 picture elements and being different in direction, and the result is compared with a positive or a negative threshold. CONSTITUTION:An image signal from a TV camera is inputted through an AD converter 5 to shift resistors 6, 8, and 10 and shift resistors 7 and 9 storing data for 2 scanning lines of the TV camera 4 to find a difference between image data having a distance of 2 picture elements through the working of subtractors 11- 14, and the output data are inputted to comparators 15-22. The results are compared with a positive or a negative threshold by comparators 15, 17, 19, 21 and 16, 18, 20, 22, the outputs are logical-summed by gate circuits 23 and 24, they are stored in a memory 25 by means of an address signal and clock signal generated by a clock control circuit 7, the pattern and an exclusive-OR of a standard pattern from a memory 26 are obtained by a gate circuit 29 and added and evaluated by an adder 30, and this performs an easy and accurate inspection of a shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6954881A JPS57184908A (en) | 1981-05-08 | 1981-05-08 | Shape detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6954881A JPS57184908A (en) | 1981-05-08 | 1981-05-08 | Shape detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57184908A true JPS57184908A (en) | 1982-11-13 |
JPH0359362B2 JPH0359362B2 (en) | 1991-09-10 |
Family
ID=13405877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6954881A Granted JPS57184908A (en) | 1981-05-08 | 1981-05-08 | Shape detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57184908A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5999203A (en) * | 1982-11-18 | 1984-06-07 | Matsushita Electric Ind Co Ltd | Stepped point detecting method by optical range finder |
JPS60113510U (en) * | 1984-01-06 | 1985-08-01 | パイオニア株式会社 | Physical quantity change detection device |
JPS61102507A (en) * | 1984-10-26 | 1986-05-21 | Amada Co Ltd | Measurement inspection system |
-
1981
- 1981-05-08 JP JP6954881A patent/JPS57184908A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5999203A (en) * | 1982-11-18 | 1984-06-07 | Matsushita Electric Ind Co Ltd | Stepped point detecting method by optical range finder |
JPS60113510U (en) * | 1984-01-06 | 1985-08-01 | パイオニア株式会社 | Physical quantity change detection device |
JPS61102507A (en) * | 1984-10-26 | 1986-05-21 | Amada Co Ltd | Measurement inspection system |
Also Published As
Publication number | Publication date |
---|---|
JPH0359362B2 (en) | 1991-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4707734A (en) | Coarse flaw detector for printed circuit board inspection | |
US5355164A (en) | Method and apparatus of correction image read signals by removing the influence of dark current therefrom | |
US5200841A (en) | Apparatus for binarizing images | |
JPS57121368A (en) | Method for picture scanning | |
JPS57184908A (en) | Shape detector | |
EP0225159A2 (en) | System for detecting edge of image | |
US4193117A (en) | Electronic correlator | |
JPS57194304A (en) | Inspecting method for circuit pattern | |
JPS55164823A (en) | Orthogonal projection image forming method of three-dimensional object | |
JPH07198331A (en) | Method for reading meter by image processing | |
GB1525856A (en) | Image pattern selection and location method | |
JPS5527602A (en) | Electron beam exposure device | |
DE3382596D1 (en) | THREE DIMENSIONAL DISTANCE MEASURING DEVICE. | |
JPS56118607A (en) | Inspection method for secondary negative | |
JP2931312B2 (en) | Defect inspection method | |
JPS58165175A (en) | Object detection | |
JPH0132657B2 (en) | ||
SU1737470A1 (en) | Device for selecting images of point objects | |
JPS6253073A (en) | Sensitivity variance correcting method for line image sensor | |
JPS57173259A (en) | Original reader | |
JPS57185770A (en) | Noise rejecting method | |
JPS5933858B2 (en) | correlation tracking device | |
JPS569871A (en) | Deciding circuit for character line direction | |
JPS56112605A (en) | Detecting method for stain on picture of contour pattern | |
JPS5523541A (en) | Pattern sorting counter |