Efficient cost aggregation for feature-vector-based wide-baseline stereo matching
Abstract ■■■ In stereo matching applications, local cost aggregation techniques are usually preferred over global methods due to their speed and ease of implementation. Local methods make implicit smoothness assumptions by aggregating costs within a finite window; however, cost aggregation is a time...
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doaj-2c1a1243cab14158873e31c2c8051be52020-11-25T00:26:00ZengSpringerOpenEURASIP Journal on Image and Video Processing1687-52812018-04-012018111610.1186/s13640-018-0249-yEfficient cost aggregation for feature-vector-based wide-baseline stereo matchingXiaoming Peng0Abdesselam Bouzerdoum1Son Lam Phung2School of Electrical, Computer and Telecommunications Engineering, University of WollongongSchool of Electrical, Computer and Telecommunications Engineering, University of WollongongSchool of Electrical, Computer and Telecommunications Engineering, University of WollongongAbstract ■■■ In stereo matching applications, local cost aggregation techniques are usually preferred over global methods due to their speed and ease of implementation. Local methods make implicit smoothness assumptions by aggregating costs within a finite window; however, cost aggregation is a time-consuming process. Furthermore, most existing local methods are based on pixel intensity values, and hence are not efficient with feature vectors used in wide-baseline stereo matching. In this paper, a new cost aggregation method is proposed, where a Per-Column Cost matrix is combined with a feature-vector-based weighting strategy to achieve both matching accuracy and computational efficiency. Here, the proposed cost aggregation method is applied with the DAISY feature descriptor for wide-baseline stereo matching; however, this method can also be applied to a fast growing number of stereo matching techniques that are based on feature descriptors. A performance comparison with several benchmark local cost aggregation approaches is presented, along with a thorough analysis of the time and storage complexity of the proposed method.http://link.springer.com/article/10.1186/s13640-018-0249-yStereo matchingCost aggregationFeature vectorDAISY |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaoming Peng Abdesselam Bouzerdoum Son Lam Phung |
spellingShingle |
Xiaoming Peng Abdesselam Bouzerdoum Son Lam Phung Efficient cost aggregation for feature-vector-based wide-baseline stereo matching EURASIP Journal on Image and Video Processing Stereo matching Cost aggregation Feature vector DAISY |
author_facet |
Xiaoming Peng Abdesselam Bouzerdoum Son Lam Phung |
author_sort |
Xiaoming Peng |
title |
Efficient cost aggregation for feature-vector-based wide-baseline stereo matching |
title_short |
Efficient cost aggregation for feature-vector-based wide-baseline stereo matching |
title_full |
Efficient cost aggregation for feature-vector-based wide-baseline stereo matching |
title_fullStr |
Efficient cost aggregation for feature-vector-based wide-baseline stereo matching |
title_full_unstemmed |
Efficient cost aggregation for feature-vector-based wide-baseline stereo matching |
title_sort |
efficient cost aggregation for feature-vector-based wide-baseline stereo matching |
publisher |
SpringerOpen |
series |
EURASIP Journal on Image and Video Processing |
issn |
1687-5281 |
publishDate |
2018-04-01 |
description |
Abstract ■■■ In stereo matching applications, local cost aggregation techniques are usually preferred over global methods due to their speed and ease of implementation. Local methods make implicit smoothness assumptions by aggregating costs within a finite window; however, cost aggregation is a time-consuming process. Furthermore, most existing local methods are based on pixel intensity values, and hence are not efficient with feature vectors used in wide-baseline stereo matching. In this paper, a new cost aggregation method is proposed, where a Per-Column Cost matrix is combined with a feature-vector-based weighting strategy to achieve both matching accuracy and computational efficiency. Here, the proposed cost aggregation method is applied with the DAISY feature descriptor for wide-baseline stereo matching; however, this method can also be applied to a fast growing number of stereo matching techniques that are based on feature descriptors. A performance comparison with several benchmark local cost aggregation approaches is presented, along with a thorough analysis of the time and storage complexity of the proposed method. |
topic |
Stereo matching Cost aggregation Feature vector DAISY |
url |
http://link.springer.com/article/10.1186/s13640-018-0249-y |
work_keys_str_mv |
AT xiaomingpeng efficientcostaggregationforfeaturevectorbasedwidebaselinestereomatching AT abdesselambouzerdoum efficientcostaggregationforfeaturevectorbasedwidebaselinestereomatching AT sonlamphung efficientcostaggregationforfeaturevectorbasedwidebaselinestereomatching |
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1725346502079938560 |