Higher Efficiency of Motion Estimation Methods
نویسندگان
چکیده
This paper presents a new motion estimation algorithm to improve the performance of the existing searching algorithms at a relative low computational cost. We try to amend the incorrect and/or inaccurate estimate of motion with higher precision by using adaptive weighted median filtering and its modifications. The median filter is well-known. A more general filter, called the Adaptively Weighted Median Filter (AWM), of which the median filter is a special case, is described. The submitted modifications conditionally use the AWM and full search algorithm (FSA). Simulation results show that the proposed technique can efficiently improve the motion estimation performance.
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 کاملDirect Estimation of Long-term Global Motion Parameters Using Affine and Higher Order Polynomial Models
In this paper we present a new technique for the long-term global motion estimation of image objects. The estimated motion parameters describe the continuous and time-consistent motion over the whole sequence relatively to a fixed reference coordinate system. The proposed method is suitable for the estimation of affine motion parameters as well as for higher-order motion models like the parabol...
متن کاملFast mode decision and motion estimation for JVT/H.264
The JVT/H.264 video coding standard can achieve considerably higher coding efficiency than previous standards. Unfortunately this comes at a cost in considerably increased complexity at the encoder mainly due to motion estimation and mode decision. In this paper, we propose a new scheme to jointly optimize motion estimation and mode decision. Simulation results show that we can achieve up to 90...
متن کاملComplex Motion Models for Simple Optical Flow Estimation
The selection of an optical flow method is mostly a choice from among accuracy, efficiency and ease of implementation. While variational approaches tend to be more accurate than local parametric methods, much algorithmic effort and expertise is often required to obtain comparable efficiency with the latter. Through the exploitation of natural motion statistics, the estimation of optical flow fr...
متن کاملAn empirical comparison of methods for image-based motion estimation
This paper presents a comparison between methods that estimate motion of a camera from a sequence of video images. We have implemented two methods– a homography based method that assumes planar environments, and shape-from-motion, a general method that can deal with a fully three dimensional world. Both methods have been formulated in an iterative, online form to produce estimates of camera mot...
متن کامل