JPS5723183A - Picture processing method - Google Patents

Picture processing method

Info

Publication number
JPS5723183A
JPS5723183A JP9921080A JP9921080A JPS5723183A JP S5723183 A JPS5723183 A JP S5723183A JP 9921080 A JP9921080 A JP 9921080A JP 9921080 A JP9921080 A JP 9921080A JP S5723183 A JPS5723183 A JP S5723183A
Authority
JP
Japan
Prior art keywords
averaging circuit
picture element
comparison output
original
output
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
JP9921080A
Other languages
Japanese (ja)
Inventor
Morisumi Kurose
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9921080A priority Critical patent/JPS5723183A/en
Publication of JPS5723183A publication Critical patent/JPS5723183A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)

Abstract

PURPOSE:To eliminate texture noises of an original by setting the best threshold level which corresponds to an original state when binary-coding multilevel-quantized digital picture information. CONSTITUTION:Adder and subtracters AR1-AR15 add data from adders ADD1- ADD15 for every row of the last aimed picture element, and subtract the outputs of respective row final-stage shift registers of data extraction parts Sij from those results to find and latch the sum of density levels of each rows of the present aimed picture element. Further, a comparator CMP sends its comparison output ''1'' to an external plotter when the mean output of an averaging circuit T1 is greater than that of an averaging circuit T2 or the comparison output ''0'' to the outside when not.
JP9921080A 1980-07-18 1980-07-18 Picture processing method Pending JPS5723183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9921080A JPS5723183A (en) 1980-07-18 1980-07-18 Picture processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9921080A JPS5723183A (en) 1980-07-18 1980-07-18 Picture processing method

Publications (1)

Publication Number Publication Date
JPS5723183A true JPS5723183A (en) 1982-02-06

Family

ID=14241283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9921080A Pending JPS5723183A (en) 1980-07-18 1980-07-18 Picture processing method

Country Status (1)

Country Link
JP (1) JPS5723183A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066577A (en) * 1983-09-21 1985-04-16 Nec Corp Picture signal binary-coding circuit of facsimile equipment
JPS60232777A (en) * 1984-05-01 1985-11-19 Nec Corp Quantizing device of picture signal
JPS60249472A (en) * 1984-05-25 1985-12-10 Nec Corp Picture signal processing circuit of facsimile device
CN105031944A (en) * 2015-08-04 2015-11-11 浙江大丰实业股份有限公司 Stage data extraction system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066577A (en) * 1983-09-21 1985-04-16 Nec Corp Picture signal binary-coding circuit of facsimile equipment
JPS60232777A (en) * 1984-05-01 1985-11-19 Nec Corp Quantizing device of picture signal
JPS60249472A (en) * 1984-05-25 1985-12-10 Nec Corp Picture signal processing circuit of facsimile device
CN105031944A (en) * 2015-08-04 2015-11-11 浙江大丰实业股份有限公司 Stage data extraction system

Similar Documents

Publication Publication Date Title
US4468704A (en) Adaptive thresholder
US4651293A (en) Image processing system comprising dither screen size selection based on image periodicity
JPS57188177A (en) Picture signal processing device
JP2516758B2 (en) Noise estimation device
JPS57178486A (en) Smoothing device for binary image signal
MY106674A (en) Gradation corrector
Nomura et al. Underwater image color correction using exposure-bracketing imaging
JPS5723183A (en) Picture processing method
JPS5723182A (en) Picture processing method
JPS5580958A (en) Picture signal binary coding system
JPS57125579A (en) Processing method for intermediate tone picture
EP1169868B1 (en) Method of reducing blocking artifacts
US4667249A (en) Binarizing system of picture image signals
JPS5558670A (en) Picture processing system
JPS5571353A (en) Picture noise eliminating method
JPS5725076A (en) Method for binary-coding of video signal
Singh Minimum variance unbiased estimation of probability densities
JPH03274863A (en) Image processing method
JPS56138378A (en) Binary device for picture
JPS5522720A (en) Noise processing system of digital image data
JPS57185770A (en) Noise rejecting method
RU2159958C1 (en) Device for processing of color images
JPS5727378A (en) Picture processing system
JP3019521B2 (en) Image reading device
JPS5583372A (en) Character read system