GB934847A - Recognition apparatus - Google Patents
Recognition apparatusInfo
- Publication number
- GB934847A GB934847A GB29982/58D GB2998258D GB934847A GB 934847 A GB934847 A GB 934847A GB 29982/58 D GB29982/58 D GB 29982/58D GB 2998258 D GB2998258 D GB 2998258D GB 934847 A GB934847 A GB 934847A
- Authority
- GB
- United Kingdom
- Prior art keywords
- character
- value
- resistors
- signals
- amplifier
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
- G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
- G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Software Systems (AREA)
- Databases & Information Systems (AREA)
- Computing Systems (AREA)
- Artificial Intelligence (AREA)
- Health & Medical Sciences (AREA)
- Character Input (AREA)
Abstract
934,847. Automatic character reading. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 18, 1959 [Sept. 18, 1958], No. 29982/58. Class 106 (1). In a character recognition apparatus the image of the character is projected on to a coordinate array of photo-cells and a selection of the photo-cell outputs is taken for each character, the selected signals being added in resistors 12A-12D, half the total of all the signals being subtracted and the difference divided by the number of photo-cells in the corresponding set. The highest signal is determined to identify the character. As described the array consists of nine rows and nine columns, the outputs appearing on 81 terminals T1-T81. All terminals are connected through resistors 17, value R, to an amplifier G F having a feedback resistor 18, value R/81. The resulting output is applied through resistors 19-22, value 2R/81, to the inputs of amplifiers G A -G D receiving the summed signals from the several selected combinations. The value of resistors 12A-12D is also R and the signal from amplifier G F is of opposite polarity so that each amplifier G A - G D receives the difference between the summed signals of the selected group and half the total value. Each amplifier also has a feedback resistor 13-16 having a value of R divided by the number in the selected group, e.g. R/27 for letter "A." This normalizes the signals so that they are comparable. Amplifiers H A -H D " determine which output is greatest by subtracting a signal derived from the outputs through resistors 23-26. Only one output should be positive and this fires a thyratron T A -T D to set a relay R A -R D . To compensate for different character shapes and different possible positions a series of sets of the transducer terminals T1-T81 may be selected for each character and highest output, taken through a diode Or gate, is then modified by amplifiers G A -G D as before.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB29982/58D GB934847A (en) | 1958-09-18 | 1958-09-18 | Recognition apparatus |
FR805421A FR1240155A (en) | 1958-09-18 | 1959-09-18 | Apparatus for identifying designs, for example letters or printed characters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB29982/58D GB934847A (en) | 1958-09-18 | 1958-09-18 | Recognition apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB934847A true GB934847A (en) | 1963-08-21 |
Family
ID=10300348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29982/58D Expired GB934847A (en) | 1958-09-18 | 1958-09-18 | Recognition apparatus |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1240155A (en) |
GB (1) | GB934847A (en) |
-
1958
- 1958-09-18 GB GB29982/58D patent/GB934847A/en not_active Expired
-
1959
- 1959-09-18 FR FR805421A patent/FR1240155A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1240155A (en) | 1960-09-02 |
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