نتایج جستجو برای: histogram of oriented gradients

تعداد نتایج: 21176622  

2013
Peter J. Dugan Mohammad Pourhomayoun Yu Shiu Rosemary D. Paradis Aaron Rice Christopher W. Clark

This paper describes ongoing work being done at Cornell University to investigate the development of a complex system designed for extracting information from large acoustic datasets. The system, called DeLMA is based on integrating advanced machine learning with high performance computing (HPC). The goal of this work is to provide the capability to accurately detect and classify whale sounds i...

2016
Bin Li Kaili Cheng Zhezhou Yu

We proposed a new method of gist feature extraction for building recognition and named the feature extracted by this method as the histogram of oriented gradient based gist (HOG-gist). The proposed method individually computes the normalized histograms of multiorientation gradients for the same image with four different scales. The traditional approach uses the Gabor filters with four angles an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1388

hedging is a multi-purpose rhetorical strategy which is usually used in scientific arguments to secure ratification of claims, reduce the risk of negation, avoid conflict, manage disagreement and leave room for the audience to assess presented information. hedges are frequently used in research articles to mitigate the findings of research endeavors. the present research aims to investigate the...

2017

Vehicle detection at night time is a challenging problem which deals with inadequately illuminated images of low contrast and reduced visibility. In this paper, an efficient region of interest (ROI) extraction approach which combines vehicle light detection and object proposals together with fusion-based score-level feature technique is proposed. The scorelevel multi-feature fusion method invol...

Journal: :CoRR 2016
Adrian K. Davison Cliff Lansley Choon-Ching Ng Kevin Tan Moi Hoon Yap

Micro-facial expressions are regarded as an important human behavioural event that can highlight emotional deception. Spotting these movements is difficult for humans and machines, however research into using computer vision to detect subtle facial expressions is growing in popularity. This paper proposes an individualised baseline micro-movement detection method using 3D Histogram of Oriented ...

Journal: :Information 2016
Samy Bakheet Ayoub Al-Hamadi

Inspired by the overwhelming success of Histogram of Oriented Gradients (HOG) features in many vision tasks, in this paper, we present an innovative compact feature descriptor called fuzzy Histogram of Oriented Lines (f-HOL) for action recognition, which is a distinct variant of the HOG feature descriptor. The intuitive idea of these features is based on the observation that the slide area of t...

Journal: :CoRR 2017
Nathanael L. Baisa Deepayan Bhowmik Andrew M. Wallace

Tracking a target of interest in both sparse and crowded environments is a challenging problem, not yet successfully addressed in the literature. In this paper, we propose a new long-term visual tracking algorithm, learning discriminative correlation filters and using an online classifier, to track a target of interest in both sparse and crowded video sequences. First, we learn a translation co...

2015
Hyukmin Eum Changyong Yoon Heejin Lee Mignon Park

In this paper, we propose a new method for spotting and recognizing continuous human actions using a vision sensor. The method is comprised of depth-MHI-HOG (DMH), action modeling, action spotting, and recognition. First, to effectively separate the foreground from background, we propose a method called DMH. It includes a standard structure for segmenting images and extracting features by using...

Journal: :Computer Vision and Image Understanding 2014
Guruprasad Somasundaram Anoop Cherian Vassilios Morellas Nikolaos Papanikolopoulos

Recognizing actions is one of the important challenges in computer vision with respect to video data, with applications to surveillance, diagnostics of mental disorders, and video retrieval. Compared to other data modalities such as documents and images, processing video data demands orders of magnitude higher computational and storage resources. One way to alleviate this difficulty is to focus...

Journal: :EURASIP J. Image and Video Processing 2017
Ayman Afaneh Fatemeh Noroozi Önsen Toygar

Distinguishing identical twins using their face images is a challenge in biometrics. The goal of this study is to construct a biometric system that is able to give the correct matching decision for the recognition of identical twins. We propose a method that uses feature-level fusion, score-level fusion, and decision-level fusion with principal component analysis, histogram of oriented gradient...

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