JPS6462780A - Video signal input device - Google Patents

Video signal input device

Info

Publication number
JPS6462780A
JPS6462780A JP62219689A JP21968987A JPS6462780A JP S6462780 A JPS6462780 A JP S6462780A JP 62219689 A JP62219689 A JP 62219689A JP 21968987 A JP21968987 A JP 21968987A JP S6462780 A JPS6462780 A JP S6462780A
Authority
JP
Japan
Prior art keywords
image
video signal
image quality
gives
evaluation
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
JP62219689A
Other languages
Japanese (ja)
Inventor
Atsushi Kuno
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP62219689A priority Critical patent/JPS6462780A/en
Publication of JPS6462780A publication Critical patent/JPS6462780A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To improve the recognition rate of images by using an image quality histogram, which gives an evaluation reference of image quality, to set the input level of a video signal. CONSTITUTION:An image pickup device 1, a video signal amplifying part 2, a level slip part 3, an image input part 4, an image memory 6, and an image processing part 5 are provided. The image quality histogram which gives the evaluation reference of image quality is generated in the image processing part 6 in accordance with the video signal obtained by picking up the image of an object, and evaluation parameters for evaluation of an observing system are calculated, and these parameters are used to calculate parameters related to a clip level. Thereafter, the video signal is clipped by this clip level, and the clipped output is digitized to generate a digital image. Thus, the allowable range of the binarizing threshold which gives a good image quality is extended to stably obtain images of good quality, and the recognition rate of images is improved.
JP62219689A 1987-09-02 1987-09-02 Video signal input device Pending JPS6462780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62219689A JPS6462780A (en) 1987-09-02 1987-09-02 Video signal input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62219689A JPS6462780A (en) 1987-09-02 1987-09-02 Video signal input device

Publications (1)

Publication Number Publication Date
JPS6462780A true JPS6462780A (en) 1989-03-09

Family

ID=16739423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62219689A Pending JPS6462780A (en) 1987-09-02 1987-09-02 Video signal input device

Country Status (1)

Country Link
JP (1) JPS6462780A (en)

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