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A VLSI architecture for video object motion estimation using a 2D hierarchical mesh model

机译:使用2D分层网格模型进行视频对象运动估计的VLSI架构

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摘要

This paper proposes a novel hierarchical mesh-based video object model and a motion estimation architecture that generates a content-based video object representation. The 2D mesh-based video object is represented using two layers: an alpha plane and a texture. The alpha plane consists of two layers: (1) a mesh layer and (2) a binary layer that defines the object boundary. The texture defines the object's colors. A new hierarchical adaptive structured mesh represents the mesh layer. The proposed mesh is a coarse-to-rine hierarchical 2D mesh that is formed by recursive triangulation of the initial coarse mesh geometry. The proposed technique reduces the mesh code size and captures the mesh dynamics. The proposed motion estimation architecture generates a progressive mesh code and the motion vectors of the mesh nodes. The performance analysis for the proposed video object representation and the proposed motion estimation architecture shows that they are suitable for very low bit rate online mobile applications and the motion estimation architecture can be used as a building block for MPEG4 codec.
机译:本文提出了一种新颖的基于分层网格的视频对象模型和一种运动估计体系结构,该体系生成基于内容的视频对象表示。基于2D网格的视频对象使用两层表示:alpha平面和纹理。 alpha平面由两层组成:(1)网格层和(2)定义对象边界的二进制层。纹理定义对象的颜色。新的分层自适应结构化网格表示网格层。提出的网格是通过对初始粗网格几何形状进行递归三角剖分而形成的从粗到细的分级2D网格。所提出的技术减小了网格代码的大小并捕获了网格动力学。所提出的运动估计架构生成渐进式网格代码和网格节点的运动矢量。对所提出的视频对象表示和所提出的运动估计体系结构的性能分析表明,它们适用于极低比特率的在线移动应用,并且该运动估计体系结构可用作MPEG4编解码器的基础。

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