Results 11 to 20 of about 1,775,833 (254)

PERFORMANCE-BASED STUDY ON DIAMOND SEARCH AND ITS VARIATIONS FOR EFFICIENT MOTION ESTIMATION IN VIDEO [PDF]

open access: yesICTACT Journal on Image and Video Processing, 2019
The motion estimation is a crucial process of video encoding process which needs to be dealt with high importance. There has been a lot of research works on the topic and various block-based motion estimation techniques were designed and implemented for ...
Hussain Ahmed Choudhury   +3 more
doaj   +1 more source

New Predicted Spiral Search Block Matching Algorithm - PSSBMA

open access: yesRadioengineering, 2002
This article describes the modification of the full search algorithmESBMA (Exhaustive Search Block Matching Algorithm), which leads up to40% speed increase. The modification is based on the ESBMA motion fieldanalysis results.
J. Pika
doaj   +1 more source

A Megavoltage CT Image Enhancement Method for Image-Guided and Adaptive Helical TomoTherapy

open access: yesFrontiers in Oncology, 2019
Purpose: To propose a novel method to improve the mega-voltage CT (MVCT) image quality for helical TomoTherapy while maintaining the stability on dose calculation.Materials and Methods: The Block-Matching 3D-transform (BM3D) and Discriminative Feature ...
Yaru Liu   +8 more
doaj   +1 more source

HIERARCHICAL ADAPTIVE ROOD PATTERN SEARCH FOR MOTION ESTIMATION AT VIDEO SEQUENCE ANALYSIS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.The paper deals with the motion estimation algorithms for the analysis of video sequences in compression standards MPEG-4 Visual and H.264.
V. T. Nguyen, A. A. Tropchenko
doaj   +1 more source

Adaptive Multi-Pattern Fast Block-Matching Algorithm Based on Motion Classification Techniques [PDF]

open access: yes, 2007
Motion estimation is the most time-consuming subsystem in a video codec. Thus, more efficient methods of motion estimation should be investigated. Real video sequences usually exhibit a wide-range of motion content as well as different degrees of detail,
González Díaz, Iván   +12 more
core   +1 more source

Performance Evaluation of Feature Matching Techniques for Detecting Reinforced Soil Retaining Wall Displacement

open access: yesRemote Sensing, 2022
Image registration technology is widely applied in various matching methods. In this study, we aim to evaluate the feature matching performance and to find an optimal technique for detecting three types of behaviors—facing displacement, settlement, and ...
Yong-Soo Ha, Jeongki Lee, Yun-Tae Kim
doaj   +1 more source

EBMBDT: Effective Block Matching Based Denoising Technique using dual tree complex wavelet transform

open access: yesMachine Graphics & Vision, 2014
In processing and investigation of digital image denoising of images is hence very important. In this paper, we propose a Hybrid de-noising technique by using Dual Tree Complex Wavelet Transform (DTCWT) and Block Matching Algorithm (BMA).
M. Selvi
doaj   +1 more source

A Novel Hexagonal Search Algorithm for Fast Block Matching Motion Estimation [PDF]

open access: yes, 2002
Based on real-world image sequence characteristics of center-biased motion vector distribution, a Hexagonal (HS) algorithm with center-biased checking point pattern for fast block motion estimation is proposed.
Anastasios Hamosfakidis   +5 more
core   +2 more sources

Efficient and Robust Feature Matching for High-Resolution Satellite Stereos

open access: yesRemote Sensing, 2022
Feature matching between high-resolution satellite stereos plays an important role in satellite image orientation. However, images of changed regions, weak-textured regions and occluded regions may generate low-quality matches or even mismatches ...
Danchao Gong   +4 more
doaj   +1 more source

Two-Dimensional Orthonormal Tree-Structured Haar Transform for Fast Block Matching

open access: yesJournal of Imaging, 2018
The goal of block matching (BM) is to locate small patches of an image that are similar to a given patch or template. This can be done either in the spatial domain or, more efficiently, in a transform domain.
Izumi Ito, Karen Egiazarian
doaj   +1 more source

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