JPS641068A - Picture signal binarization device - Google Patents

Picture signal binarization device

Info

Publication number
JPS641068A
JPS641068A JP62188142A JP18814287A JPS641068A JP S641068 A JPS641068 A JP S641068A JP 62188142 A JP62188142 A JP 62188142A JP 18814287 A JP18814287 A JP 18814287A JP S641068 A JPS641068 A JP S641068A
Authority
JP
Japan
Prior art keywords
mean value
binarization
picture signal
value
prescribed
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
JP62188142A
Other languages
Japanese (ja)
Other versions
JPH011068A (en
Inventor
Yuji Katsuta
Hiroshi Kamata
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 JP62188142A priority Critical patent/JPS641068A/en
Priority to DE3854335T priority patent/DE3854335T2/en
Priority to EP88102275A priority patent/EP0279419B1/en
Priority to US07/156,665 priority patent/US4972502A/en
Publication of JPH011068A publication Critical patent/JPH011068A/en
Publication of JPS641068A publication Critical patent/JPS641068A/en
Pending legal-status Critical Current

Links

Landscapes

  • Image Input (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To perform binarization by applying the calculation of a mean value in a real time without increasing the number of address even when a large amount of digital data exist in a prescribed area, by performing the binarization of the picture signal by using the means value found by a prescribed density arithmetic operation.
CONSTITUTION: The analog signal of an original image is inputted to a mean value density arithmetic circuit 4 via an ADC1. The circuit 4 performs the calculation of the mean value of the density of a point of [range to be enclosed with four points of prescribed ranges [x(i, j), x(i-m+1, j), x(i, j-n+1), and x(i-m+1, j-n+1)] consisting of (m) rows and (n) columns in such a way that a sum l(i, j) from the x(i, j) to the x(i-m+1, j) is calculated based on equation l(i, j)=(i, j-1)+x(i, j)+x(i, j)-x(i, j-n), and a value in which a sum from the l(i, j) to l(i-m+1, j) is divided by (m) is calculated based on equation L(i, j)=L(i-1, j)+l(i, j)/m-l(i-m, j)/m, then, the mean value X(i, j)=L(i, j)/n to x(i-m+1, j-n+1) can be calculated. The binarization is performed by using the mean value.
COPYRIGHT: (C)1989,JPO&Japio
JP62188142A 1987-02-17 1987-07-27 Picture signal binarization device Pending JPS641068A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62188142A JPS641068A (en) 1987-02-17 1987-07-27 Picture signal binarization device
DE3854335T DE3854335T2 (en) 1987-02-17 1988-02-17 Image signal binary encoder.
EP88102275A EP0279419B1 (en) 1987-02-17 1988-02-17 Image signal binary encoder
US07/156,665 US4972502A (en) 1987-02-17 1988-02-17 Image signal binary encoder

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62-34918 1987-02-17
JP3491887 1987-02-17
JP62188142A JPS641068A (en) 1987-02-17 1987-07-27 Picture signal binarization device

Publications (2)

Publication Number Publication Date
JPH011068A JPH011068A (en) 1989-01-05
JPS641068A true JPS641068A (en) 1989-01-05

Family

ID=26373790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188142A Pending JPS641068A (en) 1987-02-17 1987-07-27 Picture signal binarization device

Country Status (1)

Country Link
JP (1) JPS641068A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007196862A (en) * 2006-01-26 2007-08-09 Kubota Corp Riding type mowing machine
US10157939B2 (en) 2011-07-22 2018-12-18 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device including memory cell which includes transistor and capacitor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56121173A (en) * 1980-01-31 1981-09-22 Ncr Co Method and device for decreasing gray scale resolution of digitized image
JPS5951686A (en) * 1982-09-02 1984-03-26 Hitachi Medical Corp Digital filter
JPS6080373A (en) * 1983-10-11 1985-05-08 Hitachi Medical Corp Digital filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56121173A (en) * 1980-01-31 1981-09-22 Ncr Co Method and device for decreasing gray scale resolution of digitized image
JPS5951686A (en) * 1982-09-02 1984-03-26 Hitachi Medical Corp Digital filter
JPS6080373A (en) * 1983-10-11 1985-05-08 Hitachi Medical Corp Digital filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007196862A (en) * 2006-01-26 2007-08-09 Kubota Corp Riding type mowing machine
JP4704924B2 (en) * 2006-01-26 2011-06-22 株式会社クボタ Riding mower
US10157939B2 (en) 2011-07-22 2018-12-18 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device including memory cell which includes transistor and capacitor

Similar Documents

Publication Publication Date Title
JPS5563173A (en) Picture signal processing system
JPS5236420A (en) Integrated circuit device for tv with memory
JPS641068A (en) Picture signal binarization device
JPS641067A (en) Picture signal binarization device
EP0279419A3 (en) Image signal binary encoder
JPS5569845A (en) Picture scanning conversion system
JPS53138667A (en) A/d converter circuit
JPS51138430A (en) Electronic musical instrument
JPS5573944A (en) Data processing system
JPS54125957A (en) Signal level deciding device
JPS52100157A (en) Timing digital protective relay
JPS5473577A (en) Electron beam exposure method
JPS5324255A (en) Waveform shaping circuit
JPS542711A (en) Electronic musical instrument
JPS5344129A (en) Key inputting system
JPS5350610A (en) Video signal processing circuit
JPS5526774A (en) Picture processor
JPS5251840A (en) Data input/output unit
JPS5397331A (en) Video signal process circuit
JPS5433058A (en) Display device
JPS5483480A (en) Processing mehtod of wave height distribution analytical data
JPS5394826A (en) Control device for input/output signal
JPS536009A (en) Record-reproduce system
JPS52110067A (en) Analog electronic watch
JPS5389336A (en) Microprogram simulator