JPS5663224A - Compensating method for brightness measuring device using image pickup device - Google Patents

Compensating method for brightness measuring device using image pickup device

Info

Publication number
JPS5663224A
JPS5663224A JP14035979A JP14035979A JPS5663224A JP S5663224 A JPS5663224 A JP S5663224A JP 14035979 A JP14035979 A JP 14035979A JP 14035979 A JP14035979 A JP 14035979A JP S5663224 A JPS5663224 A JP S5663224A
Authority
JP
Japan
Prior art keywords
compensation
image pickup
coefficient
pickup device
result
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
JP14035979A
Other languages
Japanese (ja)
Inventor
Kiyoyuki Tada
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP14035979A priority Critical patent/JPS5663224A/en
Publication of JPS5663224A publication Critical patent/JPS5663224A/en
Pending legal-status Critical Current

Links

Landscapes

  • Radiation Pyrometers (AREA)

Abstract

PURPOSE: To obtain a high-accuracy result of measurement, by taking the incident light for compensation into an image pickup device to obtain the compensation coefficient after setting a fixed period during which the incident light is cut off previously and perfectly.
CONSTITUTION: The shutter 4 is closed at the step (St) 11 to erase the after-image which is taken into the image pickup device 3 through the precedent measurement, and the cut-off period is kept for a fixed time (St 12). Then the video signal for compensation is taken in (St 13) without generating the LED chip in order to form the compensation signal. This video signal is partitioned into micro regions and converted into the digital signal with every region (St 14). The total sum of these signals receives an addition (St 15), and the compensation coefficient is decided from the result of addition. This coefficient is compared (St 16) with the reference value which is stored previously. Based on this result, the coefficient α for compensation is decided (St 17).
COPYRIGHT: (C)1981,JPO&Japio
JP14035979A 1979-10-29 1979-10-29 Compensating method for brightness measuring device using image pickup device Pending JPS5663224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14035979A JPS5663224A (en) 1979-10-29 1979-10-29 Compensating method for brightness measuring device using image pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14035979A JPS5663224A (en) 1979-10-29 1979-10-29 Compensating method for brightness measuring device using image pickup device

Publications (1)

Publication Number Publication Date
JPS5663224A true JPS5663224A (en) 1981-05-29

Family

ID=15266982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14035979A Pending JPS5663224A (en) 1979-10-29 1979-10-29 Compensating method for brightness measuring device using image pickup device

Country Status (1)

Country Link
JP (1) JPS5663224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04244500A (en) * 1991-01-31 1992-09-01 Nec Corp Observation sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04244500A (en) * 1991-01-31 1992-09-01 Nec Corp Observation sensor

Similar Documents

Publication Publication Date Title
JPS5567607A (en) Pattern discrimination method
JPS54140543A (en) Monitor for zerographic apparatus
JPS56132315A (en) Automatic focusing method
JPS54140544A (en) Exposure control device for zerographic apparatus
JPS5776974A (en) Method and apparatus for read-in of radiant rays picture information
JPS53131826A (en) Photographing system for photograph data of camera
JPS5397422A (en) Double priority camera
JPS566585A (en) Television camera
JPS5213333A (en) Color photographic printing method
GB2021894A (en) Monocular range-finders
JPS5319805A (en) Automatic focusing optical device
JPS5356921A (en) Exposure control system for television caemra
JPS53118917A (en) Correction method for digital signal
JPS5431219A (en) Method and apparatus for read-out of electrostatic latent image
JPS55106434A (en) Exposure adjusting device
JPS5320319A (en) Data photographing device for camera
JPS5421339A (en) Diaphragm value arthmetic circuit for camera
JPS54100724A (en) Program shutter circuit for camera having interchangeable lenses
JPS53133031A (en) Exposure display device of cameras
JPS53141619A (en) Camera with automatic changer for film sensitivity
JPS5218163A (en) Exposure meter of electronic microscope
JPS53131030A (en) Data photographing system for camera
JPS53145412A (en) Optical reading device for facsimile unit
JPS5277752A (en) Method of measuring quality of mother rod for optical fibers
JPS558163A (en) Information reading device