Content based image and video retrieval techniques have emerged as the times require , which combine the multi - disciplinary such as image understanding , computer vision , database technique and artificial intelligence etc . it has many advanced aspects such as objective and flexible description , highly automatic input process and wide application areas etc , which has been paid more and more attentions and developed rapidly 基于內(nèi)容的檢索技術(shù)應(yīng)運(yùn)而生,它綜合了圖像理解、計(jì)算機(jī)視覺、數(shù)據(jù)庫(kù)和人工智能等多學(xué)科知識(shí),具有內(nèi)容描述客觀、方便、靈活,入庫(kù)自動(dòng)化程度高,應(yīng)用前景廣闊等諸多優(yōu)點(diǎn),受到了越來越廣泛的重視,并得到了迅速的發(fā)展。