8数据挖掘与内容有哪些信誉好的足球投注网站讲解.ppt

挑战与方向： Context （语境） 2 1 挑战与方向 数字视频技术 ---视觉数据挖掘与内容有哪些信誉好的足球投注网站 数字视频技术 数据挖掘 The process of extracting patterns from?data. The process of analyzing data from different perspectives and summarizing it into useful information. 图像与视频中的数据挖掘 图像与视频中的数据挖掘 图像数据挖掘系统模型 Images DatabaseIndex and Storage Feature Extraction Query Result Query Image Lookup 对象识别与语义解读有本质不同 Here word recognition is solved, we can access the meaning of the words. But yet, we are far from having solved language understanding. Detecting objects is just one small piece of understanding scenes (it might not even be the hardest). Images and sequence tell stories, and the structure of those stories are as complex as sentences, paragraphs and books. “老板坐车去了机场，但是因为交通堵塞，他没能赶上飞机。” Vision as a source of semantic information slide credit: Fei-Fei, Fergus Torralba Object categorization sky building flag wall banner bus cars bus face street lamp slide credit: Fei-Fei, Fergus Torralba Scene and context categorization outdoor city traffic … slide credit: Fei-Fei, Fergus Torralba Qualitative spatial information slanted rigid moving object horizontal vertical slide credit: Fei-Fei, Fergus Torralba rigid moving object non-rigid moving object 内容有哪些信誉好的足球投注网站 – 场景认识的核心技术 Techniques for understanding a visual scene Video Shot Detection Video Object Segmentation Blob Detection Object class recognition Context Semantic 内容有哪些信誉好的足球投注网站 – 场景认识的系统构架 内容有哪些信誉好的足球投注网站 – 场景的认识 1) Object representation based on intrinsic features: Local features no car Classifier p( car | VL ) 2) Detection strategy: Sky Mountain Buildings cars 3) The scene representation 内容有哪些信誉好的足球投注网站 – 图像特征 Low Level: Color Texture Edge/Shape Object Level: Regions 内容有哪些信誉好的足球投注网站 – 场景的认识 Athlete Horse Grass Tree Saddle Wind Athlete Rock Grass Tree Sky Rope Athlete Snow Tree Sky Snowboard Large # of uninitialized images Small # of automatically initialized images Visual Text C Nr O R NF X Ar Nt Z S T Sky Athlete Tree Mountain Rock Class: Rock climbing Athlete Mountain Tree Rock Sky Asc