JPS5926072B2 - Information signal processing device - Google Patents
Information signal processing deviceInfo
- Publication number
- JPS5926072B2 JPS5926072B2 JP50113358A JP11335875A JPS5926072B2 JP S5926072 B2 JPS5926072 B2 JP S5926072B2 JP 50113358 A JP50113358 A JP 50113358A JP 11335875 A JP11335875 A JP 11335875A JP S5926072 B2 JPS5926072 B2 JP S5926072B2
- Authority
- JP
- Japan
- Prior art keywords
- information signal
- signal
- processing device
- original information
- signal processing
- 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
- 238000005070 sampling Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 2
- 238000003909 pattern recognition Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- G06V10/20—Image preprocessing
- G06V10/30—Noise filtering
Description
【発明の詳細な説明】
本発明はパターン認識装置等の情報認識装置に適用して
好適な情報信号処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information signal processing device suitable for application to an information recognition device such as a pattern recognition device.
従来のパターン認識装置では例えば一枚の画をテレビカ
メラにて１２０本の水平走査線に分解して映像信号化し
、この映像信号を１水平走査毎に１２０個、従つて１枚
の画で計１４４００個のデジタル値を有する標本化信号
に変換し、この標本化信号からストローク法、パターン
マッチング法等によりー枚の画の図形、文字等の特徴抽
出を行なつてその認識を行なつていた。このように従来
装置では、一枚の画のデジタル値の数が頗る多いため、
パターン認識装置の構成が頗る複雑となり、又、処理時
間が長くなるという欠点があつた。In a conventional pattern recognition device, for example, one picture is decomposed into 120 horizontal scanning lines by a television camera and converted into a video signal, and this video signal is divided into 120 lines per horizontal scan, so one picture is calculated. It is converted into a sampled signal having 14,400 digital values, and from this sampled signal, features such as figures and characters of a picture are extracted by stroke method, pattern matching method, etc., and then recognized. Ta. In this way, with conventional equipment, the number of digital values in one image is extremely large.
This method has disadvantages in that the structure of the pattern recognition device becomes extremely complicated and the processing time becomes long.
そこで、この点を解決するためには、一枚の画のデジタ
ル値の数、即ちサンプリング凋波数をなるべく小さくす
ることが考えられる。Therefore, in order to solve this problem, it is conceivable to reduce the number of digital values of one image, that is, the number of sampling waves, as much as possible.
ところが、このようにすると、一枚の画の図形、文字等
の分解能が低下して好ましくない。又、他の解決の手段
として、帯域圧縮手段を用いることも考えられるが、そ
の減少率はせいぜいｌ／１０程度であり、あまり実効は
ない。However, if this is done, the resolution of figures, characters, etc. in a single picture is undesirably lowered. Another possible solution is to use band compression means, but the reduction rate is at most about 1/10, so it is not very effective.
斯る点に鑑み、本発明はパターン認識装置等の情報認識
装置の構成を簡車化すると共に、情報認識の処理時間を
短縮化するに資することのできる情報信号処理装置を提
案せんとするものである。In view of these points, the present invention aims to simplify the configuration of an information recognition device such as a pattern recognition device, and to propose an information signal processing device that can contribute to shortening the processing time for information recognition. It is.
本発明による情報信号処理装置の特徴とする点は、被認
識物に対応する原情報信号が供給される低域通過Ｐ波器
と、該低域通過濾波器の出力が供給されるサンプリング
回路とより成る情報信号処理装置に於て、上記低域通過
濾波器の特性を選択して、これにより上記原情報信号の
所定周波数以上の周波数成分の通過を阻止して上記原情
報信号と近似する情報を示す包絡線信号を得、該包絡線
ウ −信号を少ない数でサンプリングして上記原情報信
号に近似する標本信号を得るようになしたことにある。The information signal processing device according to the present invention is characterized by a low-pass P-wave filter to which an original information signal corresponding to an object to be recognized is supplied, and a sampling circuit to which the output of the low-pass filter is supplied. In an information signal processing device comprising: information that approximates the original information signal by selecting characteristics of the low-pass filter to block passage of frequency components higher than a predetermined frequency of the original information signal; An envelope signal representing the above-mentioned original information signal is obtained, and the envelope signal is sampled with a small number of samples to obtain a sample signal that approximates the original information signal.
以下に図面を参照して、本発明をパターン認識装置に適
用した一例について詳細に説明しよう。An example in which the present invention is applied to a pattern recognition device will be described in detail below with reference to the drawings.
１は情報としての映像を情報信号としての映像信号に変
換するための情報一情報信号変換器たるテレビカメラで
ある。Reference numeral 1 denotes a television camera which is an information-to-information signal converter for converting a video image as information into a video signal as an information signal.
このテレビカメラ１では、第２図に示す如き例えば黒丸
のパターンを有する画が例えば１２０本の水平走査線に
分解されて映像信号化される。このテレビカメラ１より
得られた原映像信号は、第３図Ａに示す如く同期信号を
含む合成映像信号である。このテレビカメラ１よりの原
映像信号は、増巾器２を介してその原映像信号の所定周
波数（例えば２ＫＨｚ〜７ＫＨｚ）以上の信号成分が阻
止される低域通過沢波器３に供給されて、第３図Ｂに示
す如く、第３図Ａの映像信号の包絡線より成る近似映像
信号が得られる。In this television camera 1, an image having, for example, a pattern of black circles as shown in FIG. 2 is decomposed into, for example, 120 horizontal scanning lines and converted into a video signal. The original video signal obtained from this television camera 1 is a composite video signal including a synchronization signal as shown in FIG. 3A. The original video signal from the television camera 1 is supplied via an amplifier 2 to a low-pass amplifier 3 that blocks signal components of a predetermined frequency (for example, 2 KHz to 7 KHz) or higher of the original video signal. As shown in FIG. 3B, an approximate video signal consisting of the envelope of the video signal in FIG. 3A is obtained.
この近似映像信号はサンプリング回路４に供給されてサ
ンプリングされる。テレビカメラ１よりの映像信号中よ
り同期分離回路７によつて水平及び垂直同期信号が分離
され、之等同期信号に基づいて、タイムベースジェネレ
ータ８に於て例えば第３図Ｃに示す如きｌ水平固期毎に
７個のサンプリングパルスが発生せしめられ、之がサン
プリング回路４に供給される。サンプリング回路４の出
力はホールド回路５に供給された後、Ａ−Ｄ変換器６に
供給され、之より近似映像信号の標本化された信号が得
られる。このＡ−Ｄ変換器６よりの信号は電子計算機９
に供給される。１０はその処理プログラムメモリ、１１
はワーク用メモリ、１２はライプラリ用メモリである。This approximate video signal is supplied to the sampling circuit 4 and sampled. The horizontal and vertical synchronizing signals are separated from the video signal from the television camera 1 by the synchronizing separation circuit 7, and based on these synchronizing signals, the time base generator 8 generates a horizontal signal as shown in FIG. 3C, for example. Seven sampling pulses are generated for each fixed period and supplied to the sampling circuit 4. The output of the sampling circuit 4 is supplied to a hold circuit 5 and then to an A-D converter 6, from which a sampled signal of an approximate video signal is obtained. The signal from this A-D converter 6 is sent to an electronic computer 9.
supplied to 10 is its processing program memory; 11
1 is a work memory, and 12 is a library memory.
ライブラリ用メモリ１２には、予め種々の形状のパター
ンの映像信号の近似映像信号の標本化されたものが多数
記憶されている。The library memory 12 stores in advance a large number of sampled approximate video signals of video signals having patterns of various shapes.
そして、Ａ−Ｄ変換器６よりの出力がワーク用メモリに
記憶され、之とライブラリ用メモリ１２に記憶されたパ
ターンの信号とがｌ水平周期毎に次々と比較されてパタ
ーンの認識が行なわれる。斯くして、之によつて、図形
、文字等の認識、即ちそのパターンの大まかな形状、大
きさ等がライブラリ用メモリ１２の内容との比較により
行なわれる。上述の例においては、情報として映像の場
合であるが、音声でも良い。Then, the output from the A-D converter 6 is stored in the work memory, and this and the pattern signal stored in the library memory 12 are compared one after another every horizontal period to recognize the pattern. . In this manner, the recognition of figures, characters, etc., that is, the rough shape, size, etc. of the patterns, is performed by comparing them with the contents of the library memory 12. In the above example, the information is video, but audio may also be used.
この場合は、音声が動物の鳴声であるか、鐘の音である
か、あるいは太鼓の音であるかの判別を行なうことがで
きる。尚、低賊通過ｒ波器３の通過阻止周波数、サンプ
リング回路４に於けるサンプリング用波数は上述の例に
限らず任意である。映像を走査して映像信号化する場合
、走査軌跡は同心円、渦巻、星形等任意形状が可能であ
る。In this case, it is possible to determine whether the sound is the cry of an animal, the sound of a bell, or the sound of a drum. Incidentally, the pass blocking frequency of the low pass r-wave device 3 and the sampling wave number in the sampling circuit 4 are not limited to the above-mentioned example but may be arbitrary. When scanning an image to convert it into a video signal, the scanning locus can have any shape such as concentric circles, spirals, and star shapes.
上述せる本発明情報信号処理装置によれば、原情報信号
が供給されその原情報信号の所定聞波数以上の信号成分
が阻止される低域通過ｆ波器と、その低域通過沢波器の
出力が供給されるサンプリング回路とより成り、そのサ
ンプリング回路より原情報信号の情報に近似せる情報の
標本化信号が得られるようにしたから、情報認識装置の
構成を簡単化することができると共に、情報認識の処理
時間を短縮化することができる。本発明は情報の緻密な
認識を必要としない映像（音声）認識、検査、監視装置
等に適用し得る。According to the above-mentioned information signal processing device of the present invention, a low-pass f wave filter is supplied with an original information signal and a signal component having a predetermined hearing frequency or more of the original information signal is blocked, and a low-pass amplifier is provided with the low-pass f wave filter. Since the sampling circuit is composed of a sampling circuit to which an output is supplied, and a sampling signal of information that approximates the information of the original information signal is obtained from the sampling circuit, the configuration of the information recognition device can be simplified, and The processing time for information recognition can be shortened. The present invention can be applied to video (audio) recognition, inspection, monitoring equipment, etc. that do not require detailed recognition of information.
第１図は本発明を適用したパターン認識装置（情報認識
装置）の一例を示す系統図、第２図はその説明に供する
パターン図、第３図はその説明に供する波形図である。
３は低域通過▲波器、４はサンプリング回路である。FIG. 1 is a system diagram showing an example of a pattern recognition device (information recognition device) to which the present invention is applied, FIG. 2 is a pattern diagram for explaining the same, and FIG. 3 is a waveform diagram for explaining the same. 3 is a low-pass waveform generator, and 4 is a sampling circuit.
Claims (1)
が供給される低減通過濾波器と、該低域通過濾波器の出
力が供給されるサンプリング回路とより成る情報信号処
理装置よりの出力を、認識装置のライブラリ用メモリに
予め記憶しておいた上記被認識物の認識対象となる近似
パターンと比較し、被認識物の認識を行う認識装置用の
情報信号処理装置であつて、上記低域通過濾波器の特性
を選択して上記原情報信号の２ＫＨｚ〜７ＫＨｚ以上の
周波数成分の通過を阻止して上記原情報信号と近似する
情報を示す包絡線信号を得る一方、上記原情報信号より
同期分離回路で分離した水平及び垂直同期信号に基づい
てタイムベースジェネレータより得た１水平周期毎に７
個程度のパルスを上記サンプリング回路に供給して上記
包絡線信号をサンプリングして上記原情報信号に近似す
る標本信号を得るようになしたことを特徴とする情報信
号処理装置。1. The output from an information signal processing device consisting of a low-pass filter to which an original information signal corresponding to an object to be recognized from a television camera is supplied, and a sampling circuit to which the output of the low-pass filter is supplied, An information signal processing device for a recognition device that recognizes an object by comparing it with an approximate pattern to be recognized of the object stored in advance in a library memory of the recognition device, The characteristics of the pass filter are selected to block the passage of frequency components of 2 KHz to 7 KHz or more of the original information signal to obtain an envelope signal representing information that approximates the original information signal, while synchronizing with the original information signal. 7 for every horizontal period obtained from the time base generator based on the horizontal and vertical synchronization signals separated by the separation circuit.
1. An information signal processing device, characterized in that the envelope signal is sampled by supplying about 100 pulses to the sampling circuit to obtain a sample signal that approximates the original information signal.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50113358A JPS5926072B2 (en) | 1975-09-18 | 1975-09-18 | Information signal processing device |
| GB37644/76A GB1563481A (en) | 1975-09-18 | 1976-09-10 | Information signal processing systems |
| DE2641692A DE2641692C2 (en) | 1975-09-18 | 1976-09-16 | Device for recognizing an object |
| FR7628093A FR2325113A1 (en) | 1975-09-18 | 1976-09-17 | INFORMATION PROCESSING DEVICE |
| CA261,416A CA1131785A (en) | 1975-09-18 | 1976-09-17 | Pattern recognition system |
| US05/891,913 US4201977A (en) | 1975-09-18 | 1978-03-30 | Data processing and storage system using filtering and sampling techniques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50113358A JPS5926072B2 (en) | 1975-09-18 | 1975-09-18 | Information signal processing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5236941A JPS5236941A (en) | 1977-03-22 |
| JPS5926072B2 true JPS5926072B2 (en) | 1984-06-23 |
Family
ID=14610242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50113358A Expired JPS5926072B2 (en) | 1975-09-18 | 1975-09-18 | Information signal processing device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5926072B2 (en) |
| CA (1) | CA1131785A (en) |
| DE (1) | DE2641692C2 (en) |
| FR (1) | FR2325113A1 (en) |
| GB (1) | GB1563481A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3232179C1 (en) * | 1982-08-30 | 1987-03-26 | Pietzsch, Ludwig, Dr.-Ing., 7500 Karlsruhe | Device for optically recognizing surface patterns on objects |
| JPS6199255U (en) * | 1984-11-30 | 1986-06-25 | ||
| US4934537A (en) * | 1988-01-28 | 1990-06-19 | Grove Telecommunications Ltd. | Fish sorting apparatus and method |
| JP6366374B2 (en) * | 2013-08-30 | 2018-08-01 | キヤノン株式会社 | Focus detection apparatus and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2507173C2 (en) * | 1975-02-20 | 1984-02-23 | Object Recognition Systems, Inc., New York, N.Y. | Device for recognizing an object |
-
1975
- 1975-09-18 JP JP50113358A patent/JPS5926072B2/en not_active Expired
-
1976
- 1976-09-10 GB GB37644/76A patent/GB1563481A/en not_active Expired
- 1976-09-16 DE DE2641692A patent/DE2641692C2/en not_active Expired
- 1976-09-17 CA CA261,416A patent/CA1131785A/en not_active Expired
- 1976-09-17 FR FR7628093A patent/FR2325113A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5236941A (en) | 1977-03-22 |
| FR2325113B1 (en) | 1981-08-21 |
| DE2641692A1 (en) | 1977-03-24 |
| FR2325113A1 (en) | 1977-04-15 |
| DE2641692C2 (en) | 1986-09-18 |
| GB1563481A (en) | 1980-03-26 |
| CA1131785A (en) | 1982-09-14 |
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