JPS5494824A - Restoration method for video expectancy - Google Patents

Restoration method for video expectancy

Info

Publication number
JPS5494824A
JPS5494824A JP219978A JP219978A JPS5494824A JP S5494824 A JPS5494824 A JP S5494824A JP 219978 A JP219978 A JP 219978A JP 219978 A JP219978 A JP 219978A JP S5494824 A JPS5494824 A JP S5494824A
Authority
JP
Japan
Prior art keywords
video element
sampling
concentration
video
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
JP219978A
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 JP219978A priority Critical patent/JPS5494824A/en
Publication of JPS5494824A publication Critical patent/JPS5494824A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain high density picture having 2/5 size of the video element, by performing operation after quantizing the adjacent sampling element through low density sampling for picture.
CONSTITUTION: The concentration is made average by matching two sampling video elements adjacent each other, constituting 6 value quantization. In this case, when the concentration is 1/6, 6/6, the output video element in the range of sampling video element is all white or black. Other than this, as to one sampling video element, four value quantization is made. In this case, when the concentration is 1/4, 4/4, the output video element being in the range of one sampling video element is all white or black. Further, in this case, when the quantization takes further intermediate value, by judging from the concentration of the both sides of each sampling video element, the video element closer to the darker sampling video element can be selected to black.
COPYRIGHT: (C)1979,JPO&Japio
JP219978A 1978-01-12 1978-01-12 Restoration method for video expectancy Pending JPS5494824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP219978A JPS5494824A (en) 1978-01-12 1978-01-12 Restoration method for video expectancy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP219978A JPS5494824A (en) 1978-01-12 1978-01-12 Restoration method for video expectancy

Publications (1)

Publication Number Publication Date
JPS5494824A true JPS5494824A (en) 1979-07-26

Family

ID=11522681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP219978A Pending JPS5494824A (en) 1978-01-12 1978-01-12 Restoration method for video expectancy

Country Status (1)

Country Link
JP (1) JPS5494824A (en)

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