JPS6462784A - Identifying method for picture attribute - Google Patents

Identifying method for picture attribute

Info

Publication number
JPS6462784A
JPS6462784A JP62219020A JP21902087A JPS6462784A JP S6462784 A JPS6462784 A JP S6462784A JP 62219020 A JP62219020 A JP 62219020A JP 21902087 A JP21902087 A JP 21902087A JP S6462784 A JPS6462784 A JP S6462784A
Authority
JP
Japan
Prior art keywords
picture
input picture
blocks
value
density
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
JP62219020A
Other languages
Japanese (ja)
Inventor
Hideyuki Watanabe
Kaoru Imao
Yojiro Sato
Satoshi Ouchi
Osamu Ogawa
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 JP62219020A priority Critical patent/JPS6462784A/en
Publication of JPS6462784A publication Critical patent/JPS6462784A/en
Pending legal-status Critical Current

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  • Image Analysis (AREA)

Abstract

PURPOSE:To increase the picture processing speed by dividing an input picture into blocks and identifying the input picture, to which a proportion of the density flay area is a specific value or larger, as a multicolor picture. CONSTITUTION:The input picture is divided into a n-number of blocks B0-Bn-1 consisting of (mxm)-number of picture elements, and a maximum value Lmax and a minimum value Lmin of the density in each blocks are obtained. The absolute value of the difference between the maximum value Lmax and the minimum value Lmin is compared with a preliminarily set reference value T, and this block is regarded as a density flat area when said absolute value is smaller than the reference value T, and the input picture is identified as a multicolor picture when density flat areas required for all blocks are >=X% of the input picture but otherwise, the input picture is identified as a full color picture. Thus, the postprocessing is adapted based on identification of picture attributes to quickly perform the processing.
JP62219020A 1987-09-03 1987-09-03 Identifying method for picture attribute Pending JPS6462784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62219020A JPS6462784A (en) 1987-09-03 1987-09-03 Identifying method for picture attribute

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62219020A JPS6462784A (en) 1987-09-03 1987-09-03 Identifying method for picture attribute

Publications (1)

Publication Number Publication Date
JPS6462784A true JPS6462784A (en) 1989-03-09

Family

ID=16728992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62219020A Pending JPS6462784A (en) 1987-09-03 1987-09-03 Identifying method for picture attribute

Country Status (1)

Country Link
JP (1) JPS6462784A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003067727A (en) * 2001-08-28 2003-03-07 Toyota Central Res & Dev Lab Inc Environmental complexity arithmetic system, environmental recognition level estimation system and obstruction warning system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003067727A (en) * 2001-08-28 2003-03-07 Toyota Central Res & Dev Lab Inc Environmental complexity arithmetic system, environmental recognition level estimation system and obstruction warning system

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