JPS5724165A - Picture identifying method - Google Patents

Picture identifying method

Info

Publication number
JPS5724165A
JPS5724165A JP9920880A JP9920880A JPS5724165A JP S5724165 A JPS5724165 A JP S5724165A JP 9920880 A JP9920880 A JP 9920880A JP 9920880 A JP9920880 A JP 9920880A JP S5724165 A JPS5724165 A JP S5724165A
Authority
JP
Japan
Prior art keywords
picture
output
video element
comparator
video
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
Application number
JP9920880A
Other languages
Japanese (ja)
Inventor
Koichi Ejiri
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9920880A priority Critical patent/JPS5724165A/en
Publication of JPS5724165A publication Critical patent/JPS5724165A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Analysis (AREA)

Abstract

PURPOSE:To grasp the characteristic of picture easily and accurately, by making the picture for scanning and sampling in video element unit. CONSTITUTION:After a video signal read in video element unit with a scanner 1 is quantized by N at a quantizer 2, it is transmitted to a comparator 3. At the same time, according to the output of a counter 4 counting a video element clock signal CLK, each threshold value is sequentially read out from an ROM5 storing the specified dither matrix to the comparator 3 for the execution of the dither processing. Next, when the output of the comparison 3 is at ''1'' (black level), 1 is added 6 to the content of the address of the threshold value and stored in the address, and nothing is done if the output of the comparison 3 is at ''0'' (white level). The identification if the picture is white-and-black picture or contrast picture is made. The video signal after quantization 2 passes through buffer memory 9 and CPU8 and is processed 10 with the result of picture identification.
JP9920880A 1980-07-18 1980-07-18 Picture identifying method Pending JPS5724165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9920880A JPS5724165A (en) 1980-07-18 1980-07-18 Picture identifying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9920880A JPS5724165A (en) 1980-07-18 1980-07-18 Picture identifying method

Publications (1)

Publication Number Publication Date
JPS5724165A true JPS5724165A (en) 1982-02-08

Family

ID=14241226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9920880A Pending JPS5724165A (en) 1980-07-18 1980-07-18 Picture identifying method

Country Status (1)

Country Link
JP (1) JPS5724165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2017115806A1 (en) * 2015-12-28 2018-10-18 株式会社アシックス shoes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2017115806A1 (en) * 2015-12-28 2018-10-18 株式会社アシックス shoes

Similar Documents

Publication Publication Date Title
DE69700603D1 (en) OMNI-DIRECTIONAL BAR CODE POSITION DETERMINER
FR2621194B1 (en) DEVICE FOR CODING DIGITAL VIDEO SIGNALS
JPS641074A (en) Picture processor
JPS5724165A (en) Picture identifying method
JPS6339142B2 (en)
JPS5761379A (en) Encoding or decoding device
JPS579170A (en) Method and apparatus for picture processing
JPS5523653A (en) Reproducing method of intermediate tone
JPS57183178A (en) Original reader
JPS5745772A (en) Facsimile device
JPS57211867A (en) Magnification varying method for picture
JPS55159280A (en) Profile processing method for picture
JPS561660A (en) Reading method
JPS5713858A (en) Adaptive quantization device
JPS5738066A (en) Picture area discriminating method
JPS55138974A (en) Image processing method
JPS5786983A (en) Picture processor
JPS5759285A (en) Method for reading character
JPS54103663A (en) Encoding circuit
JPS5745773A (en) Facsimile device
JPS5676684A (en) Quantizing method of facsimile signal
JPS568958A (en) Facsimile equipment
JPS6453681A (en) Image encoding and transmitting system
JPS5711574A (en) Picture processing method
JPS5627558A (en) Facsimile equipment