按内容检索 meaning in English

cbr content based retrieval

Content - based retrieval ( cbr ) as a current seaching means of the urgent demand in multi - media database system has been a subject needed to be researched
按内容检索是目前多媒体数据库系统迫切需要的查询手段，也是急待研究的课题。
For supporting the user searching multi - media information by cbr , the multi - media database system must can set up the model about the semantic characteristic , medium physics characteristic of the medium object and the timespace relation of the medium objects expediently
为支持用户按内容检索多媒体信息，多媒体数据库系统模型必须能够方便地对媒体对象的语义特征、媒体物理特征以及媒体对象间的时空关系建模。