JPS5494820A - Improvement method of video quality in signal processing - Google Patents

Improvement method of video quality in signal processing

Info

Publication number
JPS5494820A
JPS5494820A JP219878A JP219878A JPS5494820A JP S5494820 A JPS5494820 A JP S5494820A JP 219878 A JP219878 A JP 219878A JP 219878 A JP219878 A JP 219878A JP S5494820 A JPS5494820 A JP S5494820A
Authority
JP
Japan
Prior art keywords
pij
video
video quality
signal processing
black
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
JP219878A
Other languages
Japanese (ja)
Inventor
Koichi Ejiri
Morizumi Kurose
Seiji Hayakawa
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 JP219878A priority Critical patent/JPS5494820A/en
Publication of JPS5494820A publication Critical patent/JPS5494820A/en
Pending legal-status Critical Current

Links

Landscapes

  • Editing Of Facsimile Originals (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)

Abstract

PURPOSE:To improve the video quality, by obtaining the output video elements with higher density than the sampling video elements. CONSTITUTION:The video element signal S(i,j) read in is made quantized in five values (S5 to S1) in the order of greater black signal. Further, the video element S(i,j) is made fine into subcells Pij(a) to Pij(d). When the video element S(i,j) is at maximum level S5, Pij(a) to Pij(d) are all made to black (1) and are all white (0) at minimum level, and at intermediate levels S2 to S4, the subcells are burried with the signal (black) in the specific order.
JP219878A 1978-01-12 1978-01-12 Improvement method of video quality in signal processing Pending JPS5494820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP219878A JPS5494820A (en) 1978-01-12 1978-01-12 Improvement method of video quality in signal processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP219878A JPS5494820A (en) 1978-01-12 1978-01-12 Improvement method of video quality in signal processing

Publications (1)

Publication Number Publication Date
JPS5494820A true JPS5494820A (en) 1979-07-26

Family

ID=11522652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP219878A Pending JPS5494820A (en) 1978-01-12 1978-01-12 Improvement method of video quality in signal processing

Country Status (1)

Country Link
JP (1) JPS5494820A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56110986A (en) * 1980-02-07 1981-09-02 Nippon Telegraph & Telephone Dot pattern output processing system
JPS58114573A (en) * 1981-12-26 1983-07-07 Mitsubishi Electric Corp Recording picture processing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56110986A (en) * 1980-02-07 1981-09-02 Nippon Telegraph & Telephone Dot pattern output processing system
JPS58114573A (en) * 1981-12-26 1983-07-07 Mitsubishi Electric Corp Recording picture processing system

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