JPS5593365A - Judging method for video quality - Google Patents

Judging method for video quality

Info

Publication number
JPS5593365A
JPS5593365A JP186079A JP186079A JPS5593365A JP S5593365 A JPS5593365 A JP S5593365A JP 186079 A JP186079 A JP 186079A JP 186079 A JP186079 A JP 186079A JP S5593365 A JPS5593365 A JP S5593365A
Authority
JP
Japan
Prior art keywords
memory
video element
video
operator
picture
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
Application number
JP186079A
Other languages
Japanese (ja)
Other versions
JPS6251025B2 (en
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 JP186079A priority Critical patent/JPS5593365A/en
Publication of JPS5593365A publication Critical patent/JPS5593365A/en
Publication of JPS6251025B2 publication Critical patent/JPS6251025B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Facsimiles In General (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To enable to perform suitable signal processing, by discriminating the video signal obtained through scanning of original video whether it is in binary picture or contrast picture.
CONSTITUTION: The input picture read in with original scanning is converted into electric signal at the image sensor 2 and stored in the buffer memory 4 via the A/D converter 3. In the memory 4, the concentration level of each video element of specific video element areas m×n is stored which takes the noticed video element X. The operator 5 operates the state of distribution of the concentration level frequency every concentration level for the video element in this area and stores it in the memory 6. Sumultaneously, the operator 5 suitably processes the content of the memory 6 and the discrimination circuit 7 indicates it to the operator unit 8 whether the video element X is in binary picture or contrast picture based on the result of processing. The operator unit 8 and the processing circuit 9 suitably process the data of video element X in the memory 4 and transmit it to the plotter or transmission line.
COPYRIGHT: (C)1980,JPO&Japio
JP186079A 1979-01-09 1979-01-09 Judging method for video quality Granted JPS5593365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP186079A JPS5593365A (en) 1979-01-09 1979-01-09 Judging method for video quality

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP186079A JPS5593365A (en) 1979-01-09 1979-01-09 Judging method for video quality

Publications (2)

Publication Number Publication Date
JPS5593365A true JPS5593365A (en) 1980-07-15
JPS6251025B2 JPS6251025B2 (en) 1987-10-28

Family

ID=11513290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP186079A Granted JPS5593365A (en) 1979-01-09 1979-01-09 Judging method for video quality

Country Status (1)

Country Link
JP (1) JPS5593365A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57125580A (en) * 1981-01-02 1982-08-04 Ibm Threshould processing mode switch
JPH09233322A (en) * 1996-02-28 1997-09-05 Canon Inc Method and device for image processing
WO2002045023A1 (en) * 2000-11-29 2002-06-06 Nikon Corporation Image processing method, image processing device, detection method, detection device, exposure method and exposure system
JP2013211807A (en) * 2012-03-30 2013-10-10 Brother Ind Ltd Image processing device and program

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5582565A (en) * 1978-12-15 1980-06-21 Ricoh Co Ltd Picture sampling method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5582565A (en) * 1978-12-15 1980-06-21 Ricoh Co Ltd Picture sampling method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57125580A (en) * 1981-01-02 1982-08-04 Ibm Threshould processing mode switch
JPS632397B2 (en) * 1981-01-02 1988-01-19 Intaanashonaru Bijinesu Mashiinzu Corp
JPH09233322A (en) * 1996-02-28 1997-09-05 Canon Inc Method and device for image processing
WO2002045023A1 (en) * 2000-11-29 2002-06-06 Nikon Corporation Image processing method, image processing device, detection method, detection device, exposure method and exposure system
JP2013211807A (en) * 2012-03-30 2013-10-10 Brother Ind Ltd Image processing device and program

Also Published As

Publication number Publication date
JPS6251025B2 (en) 1987-10-28

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