نتایج جستجو برای: local descriptor

تعداد نتایج: 542130  

2014
Isma Hadji Guilherme N. DeSouza

In this paper, we present a novel 3D descriptor that bridges the gap between global and local approaches. While local descriptors proved to be a more attractive choice for object recognition within cluttered scenes, they remain less discriminating exactly due to the limited scope of the local neighborhood. On the other hand, global descriptors can better capture relationships between distant po...

Journal: :journal of sciences, islamic republic of iran 2011
a. aasaraai

the aim of this paper is to analyze the undamped second order descriptor systems to show the possibility of transform an undamped second order descriptor system to a pure first order descriptor system ,on different ways, while stating some of its benefits. meanwhile we will introduce pure first order systems and undamped second order systems and indicate that under some assumptions every undamp...

Journal: :IEEE Transactions on Circuits and Systems for Video Technology 2017

2015
Lingyun Cai Xin Wang Yuanyuan Wang Yi Guo Jinhua Yu Yi Wang

BACKGROUND Classification of breast ultrasound (BUS) images is an important step in the computer-aided diagnosis (CAD) system for breast cancer. In this paper, a novel phase-based texture descriptor is proposed for efficient and robust classifiers to discriminate benign and malignant tumors in BUS images. METHOD The proposed descriptor, namely the phased congruency-based binary pattern (PCBP)...

2013
Marco San-Biagio Samuele Martelli Marco Crocco Marco Cristani Vittorio Murino

Encoding an object essence in terms of self-similarities between its parts is becoming a popular strategy in Computer Vision. In this paper, a new similarity-based descriptor, dubbed Structural Similarity Cross-Covariance Tensor is proposed, aimed to encode relations among different regions of an image in terms of cross-covariance matrices. The latter are calculated between low-level feature ve...

2012
Ivo Everts Jan C. van Gemert Theo Gevers

Local image descriptors are generally designed for describing all possible image patches. Such patches may be subject to complex variations in appearance due to incidental object, scene and recording conditions. Because of this, a single-best descriptor for accurate image representation under all conditions does not exist. Therefore, we propose to automatically select from a pool of descriptors...

Journal: :IEEE Trans. Circuits Syst. Video Techn. 2001
B. S. Manjunath Jens-Rainer Ohm Vinod V. Vasudevan Akio Yamada

This paper presents an overview of color and texture descriptors that have been approved for the Final Committee Draft of the MPEG-7 standard. The color and texture descriptors that are described in this paper have undergone extensive evaluation and development during the past two years. Evaluation criteria include effectiveness of the descriptors in similarity retrieval, as well as extraction,...

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