Camera Motion Estimation for Object-based Video Coding
نویسندگان
چکیده
This paper deals with motion estimation of an airborne camera and generation of 3D landscape models from image sequences for object-based video coding. While most camera motion estimators use a random sampling outlier elimination, the presented new approach uses a priori knowledge to simplify the complexity of the outlier elimination and to achieve real time coding. Test results with synthetic sequences show an estimation error of maximal one percent for the motion parameter which leads to a good quality for the generated 3D object models.
منابع مشابه
New adaptive interpolation schemes for efficient meshbased motion estimation
Motion estimation and compensation is an essential part of existing video coding systems. The mesh-based motion estimation (MME) produces smoother motion field, better subjective quality (free from blocking artifacts), and higher peak signal-to-noise ratio (PSNR) in many cases, especially at low bitrate video communications, compared to the conventional block matching algorithm (BMA). Howev...
متن کاملKernel-based Multiple Cue Algorithm for Object Segmentation
This paper proposes a novel algorithm to solve the problem of segmenting foreground-moving objects from the background scene. The major cue used for object segmentation is the motion information, which is initially extracted from MPEG motion vectors. Since the MPEG motion vectors are generated for simple video compression without any consideration of visual objects, they may not correspond to t...
متن کاملAutomatic Video Object Segmentation from VOP
The video coding standard MPEG-4 is enabling content-based functionalities of a prior decomposition of sequences into video object planes (VOP) so that each VOP represents a semantic object. Therefore extraction of semantic objects is an important part. There are various coding tools: shape coding, motion estimation and compensation, texture coding, multifunctional coding, error resilience, spr...
متن کاملEfficient Motion Estimation for Video Coding Using Depth Information
This paper presents the reducing method of the complexity in motion estimation for video coding by using the depth information. We obtain two regions of each picture within video sequence from distance information calculated by depth camera. Background region has large distance, but object region has small distance. If a current block is the object region, then motion is searched within the obj...
متن کاملA New Video Coding Approach Based on Object- Extraction
This paper describes efficient object-based video coding schemes suitable for content-based multimedia streaming systems. Anew two video coding approaches are presented to study the effect of the object based motion estimation in video coding and the effect of the object based video coding on the compression quality, respectively. The first approach is based on a new motion estimation technique...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002