JPS5757367A - Picture processing method - Google Patents
Picture processing methodInfo
- Publication number
- JPS5757367A JPS5757367A JP55132504A JP13250480A JPS5757367A JP S5757367 A JPS5757367 A JP S5757367A JP 55132504 A JP55132504 A JP 55132504A JP 13250480 A JP13250480 A JP 13250480A JP S5757367 A JPS5757367 A JP S5757367A
- Authority
- JP
- Japan
- Prior art keywords
- edge
- coordinates
- estimated
- radius
- circle
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
- G06T7/66—Analysis of geometric attributes of image moments or centre of gravity
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Analysis (AREA)
Abstract
PURPOSE:To obtain values of coordinates of the center and the radius of a circle with a high precision, by removing irregular values from a set of points indicating edge coordinates of the circle. CONSTITUTION:When a picture of data which lacks parts of the picture of a circle is read out, a projection histogram calculating circuit 5 stores sums Pv(x) and PH(y) of bits of logical ''1'' in a histogram memory 7, and stored contents are processed by a processor 11 for calculating estimated center and radius. Estimated values of coordinates of the center and the radius of the circle are inputted to a processor 12 for estimated edge points, and edge points are calculated, and estimated edge coordinates are stored in a data memory 10 for estimated edge point. Next, measured edge coordinates are obtained from a picture memory 1, and the difference between these coordinates and estimated edge coordinates is calculated by a circuit 6 for calculating the edge difference, and only data of measured edge coordinates where edge difference data shows an accurate error distribution is extracted by a processor 13 for extracting sample points and are sent to a processor 14 for calculating the center and the radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55132504A JPS5757367A (en) | 1980-09-23 | 1980-09-23 | Picture processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55132504A JPS5757367A (en) | 1980-09-23 | 1980-09-23 | Picture processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5757367A true JPS5757367A (en) | 1982-04-06 |
Family
ID=15082899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55132504A Pending JPS5757367A (en) | 1980-09-23 | 1980-09-23 | Picture processing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5757367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6835009B2 (en) | 2001-01-31 | 2004-12-28 | Canon Kabushiki Kaisha | Shutter apparatus |
-
1980
- 1980-09-23 JP JP55132504A patent/JPS5757367A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6835009B2 (en) | 2001-01-31 | 2004-12-28 | Canon Kabushiki Kaisha | Shutter apparatus |
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