JPS54132117A - Motion detecting device - Google Patents

Motion detecting device

Info

Publication number
JPS54132117A
JPS54132117A JP4055278A JP4055278A JPS54132117A JP S54132117 A JPS54132117 A JP S54132117A JP 4055278 A JP4055278 A JP 4055278A JP 4055278 A JP4055278 A JP 4055278A JP S54132117 A JPS54132117 A JP S54132117A
Authority
JP
Japan
Prior art keywords
signal
point
luminance
frame
low
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
JP4055278A
Other languages
Japanese (ja)
Other versions
JPS6135756B2 (en
Inventor
Taizo Akimoto
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 JP4055278A priority Critical patent/JPS54132117A/en
Publication of JPS54132117A publication Critical patent/JPS54132117A/en
Publication of JPS6135756B2 publication Critical patent/JPS6135756B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Closed-Circuit Television Systems (AREA)

Abstract

PURPOSE: To eliminate the misjudgement at the low-luminance region for the device which detects the action at each point of the image based on the luminance difference of the video signal by amplifying large the signal of the low-luminance region and narrowing the width of the threshold.
CONSTITUTION: The signal at each point of one frame of the video signal which is supplied via A/D converter 10 and arithmetic circuit 11 is memorized in frame memory circuit 12. Then the signal of each point of the memorized preceding frame is read out via write/read control circuit 14 to be compared with the signal of each point of the frame this time at absolute value arithmetic circuit 19. And the motion of the image is detected at each point based on the difference of the luminance. In such motion detecting device, black extension nonlinear converting means 17 and 18 are provided to increase the low-luminance regions for the signals of both the preceding and present times. These means 17 and 18 are constituted as the logarithm conversion table in which the output signal is preset to the input signal, and thus the threshold width can be reduced at circuit 19.
COPYRIGHT: (C)1979,JPO&Japio
JP4055278A 1978-04-06 1978-04-06 Motion detecting device Granted JPS54132117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4055278A JPS54132117A (en) 1978-04-06 1978-04-06 Motion detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4055278A JPS54132117A (en) 1978-04-06 1978-04-06 Motion detecting device

Publications (2)

Publication Number Publication Date
JPS54132117A true JPS54132117A (en) 1979-10-13
JPS6135756B2 JPS6135756B2 (en) 1986-08-14

Family

ID=12583606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4055278A Granted JPS54132117A (en) 1978-04-06 1978-04-06 Motion detecting device

Country Status (1)

Country Link
JP (1) JPS54132117A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203081A (en) * 1984-02-10 1985-10-14 エルシント　リミテツド Digital fluorescent photographing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203081A (en) * 1984-02-10 1985-10-14 エルシント　リミテツド Digital fluorescent photographing device

Also Published As

Publication number Publication date
JPS6135756B2 (en) 1986-08-14

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