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Image Classification: No Features, no Clustering

Cui, Shiyong and Schwarz, Gottfried and Datcu, Mihai (2015) Image Classification: No Features, no Clustering. In: Image Processing (ICIP), 2015 IEEE International Conference on, pp. 1960-1964. IEEE Xplore. ICIP 2015, 27-30, Sep, 2015, Québec, Canada. doi: 10.1109/ICIP.2015.7351143.

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Official URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7351143


In this paper, we consider the problem of satellite image classification, in which feature extraction is a critical step. One of the most prevalent methods is the Bag-of-Words (BoW) feature representation, which attains state-of-the-art performance in many applications. It has five steps: feature detection, local feature extraction, dictionary learning, feature coding, and feature pooling. In this paper, we focus on the second and third step. We propose a simple yet efficient feature extraction method within the BoW framework. It has two main advantages. Firstly, this method does not need any complex local feature extraction; instead, it uses directly the pixel values from small windows as low level features. Secondly, instead of using a time-consuming clustering algorithm for dictionary learning, a random dictionary is built and applied to feature space quantization. An extensive experimental evaluation has been performed and compared with other feature extraction methods. It is demonstrated that our feature extraction method is quite competitive for optical and SAR satellite image classification.

Item URL in elib:https://elib.dlr.de/100979/
Document Type:Conference or Workshop Item (Speech)
Title:Image Classification: No Features, no Clustering
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Cui, ShiyongRemote Sensing Technology Institute (IMF)UNSPECIFIEDUNSPECIFIED
Schwarz, GottfriedRemote Sensing Technology Institute (IMF)UNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Image Processing (ICIP), 2015 IEEE International Conference on
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1960-1964
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:IEEE Xplore
Keywords:Bag-of-words (BoW), Dictionary learning, Feature extraction, Image classification, Unsupervised feature learning
Event Title:ICIP 2015
Event Location:Québec, Canada
Event Type:international Conference
Event Dates:27-30, Sep, 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Cui, Shiyong
Deposited On:16 Dec 2015 10:38
Last Modified:31 Jul 2019 19:58

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