基于场的 meaning in English
field-based
Examples
- Then some key techniques in mpeg - 2 and mpeg - 4 recommendations are studied and compared in detail , including motion estimation , motion compensation , discrete cosine transform , inverse discrete cosine transform , variable length coding and layered description of picture and code stream
然后深入研究了mpeg - 2建议的视频编码标准，包括ts流、 ps流、时钟恢复、视频与音频的同步、基于场的运动补偿、 dct及变长编码。 - The main researches are the following : on the basis of . in - depth understanding of space - time concepts and change types , analyzing existing temporal conceptual models , a event - based temporal model and a process - based temporal model have been developed . combining the two temporal models with field - based spatial model and object - based spatial model directly leads to four spatiotemporal conceptual models , which are field - event spatiotemporal conceptual model , field - process spatiotemporal conceptual model , object - event spatiotemporal conceptual model , and object - process spatiotemporal conceptual model
在讨论了各种时空变化类型后，论文对已有时间概念模型进行了分析，提出时空数据建模的基本目标是表达时空变化，并就此提出根据表达离散变化和连续变化的需要，时间概念模型可分为基于事件和基于过程的模型，并结合基于场的和基于对象的空间概念模型，提出时空概念模型可划分为四种：场事件时空概念模型，场过程时空概念模型，对象事件时空概念模型，对象过程时空概念模型。