Pattern recognition techniques in on-line hand written signature verification - A survey

Radhika, K. R.; Sekhar, G. N.; Venkatesha, M. K.

doi:10.1109/mmcs.2009.5256701

Cited by 15 publications

(9 citation statements)

References 29 publications

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“…The key of threshold method is determining the threshold. There are many methods used to determine the threshold, such as the maximum entropy method (Kapur et al, 1985), the minimum interclass variance method (Radhika et al, 2009) and the Otsu method (Otsu, 1979). However, these methods are always complex and timeconsuming.…”

Section: Threshold-based Classificationmentioning

confidence: 99%

Mapping Wetlands of Dongting Lake in China Using Landsat and Sentinel-1 Time Series at 30m

Xing

Tang

Wang

et al. 2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Mapping and monitoring wetlands of Dongting lake using optical sensor data has been limited by cloud cover, and open access Sentinal-1 C-band data could provide cloud-free SAR images with both have high spatial and temporal resolution, which offer new opportunities for monitoring wetlands. In this study, we combined optical data and SAR data to map wetland of Dongting Lake reserves in 2016. Firstly, we generated two monthly composited Landsat land surface reflectance, NDVI, NDWI, TC-Wetness time series and Sentinel-1 (backscattering coefficient for VH and VV) time series. Secondly, we derived surface water body with two monthly frequencies based on the threshold method using the Sentinel-1 time series. Then the permanent water and seasonal water were separated by the submergence ratio. Other land cover types were identified based on SVM classifier using Landsat time series. Results showed that (1) the overall accuracies and kappa coefficients were above 86.6&thinsp;% and 0.8. (3) Natural wetlands including permanent water body (14.8&thinsp;%), seasonal water body (34.6&thinsp;%), and permanent marshes (10.9&thinsp;%) were the main land cover types, accounting for 60.3&thinsp;% of the three wetland reserves. Human-made wetlands, such as rice fields, accounted 34.3&thinsp;% of the total area. Generally, this study proposed a new flowchart for wetlands mapping in Dongting lake by combining multi-source remote sensing data, and the use of the two-monthly composited optical time series effectively made up the missing data due to the clouds and increased the possibility of precise wetlands classification.

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Section: Threshold-based Classificationmentioning

confidence: 99%

Mapping Wetlands of Dongting Lake in China Using Landsat and Sentinel-1 Time Series at 30m

Xing

Tang

Wang

et al. 2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Another interesting example is the Australian Population Health Research Network Secure Unified Research Environment [41], see [29]. Similar systems include the United Kingdom Office For National Statistics (ONS) Virtual Microdata Laboratory [28], and the UK Secure Data Service, that provides secure remote access to data operated by the Economic and Social Data Service [47].…”

Section: Remote Analysis Systemsmentioning

confidence: 99%

“…1 ePD. 47 Therefore, the storage of communication data falls under the scope of the ePD and the Member States may derogate from the confidentiality of communications guaranteed by Article 5 ePD and the obligation to have traffic data deleted or anonymized by the service providers once they are no longer required under Article 6 ePD. However, the derogation clause of Article 15 para.…”

Section: Consequences Of the Judgmentmentioning

confidence: 99%

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Privacy and Identity Management for the Future Internet in the Age of Globalisation

2015

IFIP Advances in Information and Communication Technology

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Abstract. In order to guarantee better user-friendliness and higher accuracy, beyond the existing traditional single-factor biometric systems, the multimodal ones appear to be more promising. Two or more biometric measurements for the same identity are extracted, stored and compared during the enrollment, authentication and identification processes. Deployed multimodal biometric systems also referred to as multibiometrics or even as multimodalities are commonly found and used in electronic chips, embedded in travel documents. The widespread use of such systems, the nature of the shared data and the importance of applications introduce privacy risks. A significant number of approaches and very recent advances to the relevant protection technologies have been published. This paper illustrates a comprehensive overview of research in multibiometrics, the protection of their templates and the privacy issues that arise. Up-to-date review of the existing literature revealing the current state-of-art suggestions is provided, based on the different levels of fusion and the employed protection algorithms, while an outlook to future prospects is also discussed.

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“…Thresholds for image segmentation have been calculated based on interclass variation [17] and histogram [18,19]. The limitation of threshold based segmentation technique is that it performs well for images, which have only two components.…”

Section: Introductionmentioning

confidence: 99%

Image segmentation based on gray stretch and threshold algorithm

Liu

Yang

Lan

et al. 2015

Optik

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Pattern recognition techniques in on-line hand written signature verification - A survey

Cited by 15 publications

References 29 publications

Mapping Wetlands of Dongting Lake in China Using Landsat and Sentinel-1 Time Series at 30m

Mapping Wetlands of Dongting Lake in China Using Landsat and Sentinel-1 Time Series at 30m

Privacy and Identity Management for the Future Internet in the Age of Globalisation

Image segmentation based on gray stretch and threshold algorithm

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