期刊名称:Knjižnica : Revija za Področje Bibliotekarstva in Informacijske Znanosti
印刷版ISSN:0023-2424
电子版ISSN:1581-7903
出版年度:2007
卷号:51
期号:3-4
页码:41-66
出版社:Zveza Bibliotekarskih Društev Slovenije, Narodna in Univerzitetna Knjižnica
摘要:Ob pojavu znatnega števila velikih slikovnih podatkovnih zbirk, v katerih so bile slikevečinoma opisane s tekstovnimi deskriptorji, se je zaradi nepopolnosti tovrstnega načinaopisovanja sčasoma pojavila potreba po drugačnem pristopu do indeksiranja slik inpoizvedovanja po njih. Alternativa tekstovnim sistemom poizvedovanja po slikah jepoizvedovanje po slikah na podlagi vsebine. Slike so indeksirane na osnovi svoje dejanskevsebine in značilnice, kot so barva, tekstura in oblika so izražene s številčnimivrednostmi. V procesu poizvedovanja sistem izračuna vrednosti značilnic za podanosliko na isti način, kot so izračunane vrednosti za slike, shranjene v zbirki, in opraviprimerjavo. Takšni sistemi so znani pod imenom CBIR (content-based image retrieval)sistemi. V delu predstavimo osnovne karakteristike CBIR sistemov, prosto dostopnihprek svetovnega spleta, in jih primerjamo gleda na razvojno okolje, v katerih so nastali,značilnicah, ki jih uporabljajo za opisovanje vsebine slik, in zmožnostjo uporabniškegavmesnika, ki ga sistem ponuja.
其他摘要:With development of technology, large image databases have become reality. Pictures in these databases were mainly described with keywords, but due to insufficiency of such description, the need for different approach to image indexing and retrieval has arisen. Content-based image retrieval is an alternative to textual based systems. Images are indexed on the basis of their actual content, features like color, texture and shape are presented numerically. In retrieval process, features for input image are extracted with the same algorithm as used for pictures already stored in the database, and values are compared. Such systems are known as CBIR (content-based image retrieval) systems. Basic characteristics of CBIR systems, which are freely available on the Internet, are presented. The systems are compared with respect to the environment in which they were built, applied features for content description and ability of user interface.
关键词:sistemi za poizvedovanje; poizvedovanje; slikah; CBIR; značilnice; ekstrakcija značilnic; podatkovne zbirke; vizualne informacije; informacijski sistemi; informacijska tehnologija; Internet
其他关键词:Keywords: retrieval systems; image retrieval; CBIR; features; feature extraction; image databases; visual information; information systems; information technology; Internet