JPS5632869A - Picture defining unit - Google Patents

Picture defining unit

Info

Publication number
JPS5632869A
JPS5632869A JP10943179A JP10943179A JPS5632869A JP S5632869 A JPS5632869 A JP S5632869A JP 10943179 A JP10943179 A JP 10943179A JP 10943179 A JP10943179 A JP 10943179A JP S5632869 A JPS5632869 A JP S5632869A
Authority
JP
Japan
Prior art keywords
picture
focus
focus image
pickup element
difference
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
JP10943179A
Other languages
Japanese (ja)
Inventor
Masashi Kantani
Makoto Murakoshi
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP10943179A priority Critical patent/JPS5632869A/en
Publication of JPS5632869A publication Critical patent/JPS5632869A/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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Heads (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To define a picture by picking up an out-of-focus image and in-focus image by the same image pickup element in a picture reader and by obtaining an output picture on the basis of the difference between both the pictures. CONSTITUTION:Liquid crystal plate 5 between lens 2 and image pickup element 3 is supplied with an ON-OFF signal from synchronizing circuit 4 to supply image pickup element 3 with an out-of-focus image and in-focus image alternately. An in-focus signal for a single scan is stored in memory 9 by way of amplifier 7 and inputted to differential amplifier 10 together with the out-of-focus image obtd. Through amplifier 8 to obtain a difference picture output. Therefore, since the difference output picture has the high frequency range emphasized in comparision with the original picture, the picture is defined in details and variance in sensitivity between pixcell can be corrected.
JP10943179A 1979-08-28 1979-08-28 Picture defining unit Pending JPS5632869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10943179A JPS5632869A (en) 1979-08-28 1979-08-28 Picture defining unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10943179A JPS5632869A (en) 1979-08-28 1979-08-28 Picture defining unit

Publications (1)

Publication Number Publication Date
JPS5632869A true JPS5632869A (en) 1981-04-02

Family

ID=14510064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10943179A Pending JPS5632869A (en) 1979-08-28 1979-08-28 Picture defining unit

Country Status (1)

Country Link
JP (1) JPS5632869A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179717A (en) * 1984-02-28 1985-09-13 Canon Inc Reading device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179717A (en) * 1984-02-28 1985-09-13 Canon Inc Reading device

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