Local Contrast Based Adaptive SAR Speckle Filter

Shitole, Sanjay; Sharma, Mayank; De, Shaunak; Bhattacharya, Avik; Rao, Y. S.; Mohan, B. Krishna

doi:10.1007/s12524-016-0613-2

Cited by 11 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Speckle noise is considered to have a multiplicative nature. It arises when the radar waves, intended to hit the object to be imaged, interfere with objects in their path [21] [22] [23]. Such interfering objects have dimensions comparable to that of the incident radar wavelength [12].…”

Section: Speckle Modelmentioning

confidence: 99%

Adaptive parametric estimator for complex valued images

Chaturvedi

Sharma

Wadekar

et al. 2015

2015 International Conference on Technologies for Sustainable Development (ICTSD)

Self Cite

View full text Add to dashboard Cite

Synthetic Aperture Radar (SAR) images are affected by speckle which has a multiplicative nature. It is a granular noise which appears due to coherent interference of radar waves reflected from elementary scatterers. The presence of speckle greatly affects the analytical ease in terms of image classification and segmentation. Despeckling filters such as Lee, Frost, Boxcar and other have been proposed to deal with the phenomenon of speckle. However, the major concern for such filtering approaches is the preservation of features like edges and point targets while filtering the homogeneous areas. In this paper, a new approach is proposed which deals with this issue by using a statistical method that filters the different image features separately. Thus, it provides a greater level of control on the filtering process. The performance of the proposed filter is analyzed using AIRSAR C-band dataset. The results show that the proposed filter gives a good performance in terms of despeckling the homogeneous region whilst preserving the edges and point targets.

show abstract

Section: Speckle Modelmentioning

confidence: 99%

Adaptive parametric estimator for complex valued images

Chaturvedi

Sharma

Wadekar

et al. 2015

2015 International Conference on Technologies for Sustainable Development (ICTSD)

Self Cite

View full text Add to dashboard Cite

show abstract

“…This effect degrades the visibility of distributed targets and separation between them [5] [6]. To minimize the speckle effect, we are in need of adaptive, efficient and simple speckle reduction technique [7], [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of speckle on wide band of frequency components of an image

Shitole

Rao

Mohan

2015

2015 International Conference on Technologies for Sustainable Development (ICTSD)

Self Cite

View full text Add to dashboard Cite

The aim of this paper is to study the effect of speckle on wide frequency components in synthetic aperture radar (SAR) images. In this study, the presence of speckle in SAR images is analysed using frequency domain techniques. SAR images consists of many features such as lines, edges, point targets, structural boundaries, homogeneous areas. In frequency domain analysis we observe these features occupy wide band of frequency spectra. In formulating the effective speckle reduction techniques, exact knowledge of noise like phenomenon on wide band of frequency spectra in SAR images is necessary. Qualitative and quantitative analysis using fourier transform helps to conclude this study.

show abstract

Role of Space-Borne Remote Sensing Technology for Monitoring of Urban and Environmental Hazards

Tripathi

Tiwari

2021

Earth and Environmental Sciences Library

View full text Add to dashboard Cite

Local Contrast Based Adaptive SAR Speckle Filter

Cited by 11 publications

References 39 publications

Adaptive parametric estimator for complex valued images

Adaptive parametric estimator for complex valued images

Effect of speckle on wide band of frequency components of an image

Role of Space-Borne Remote Sensing Technology for Monitoring of Urban and Environmental Hazards

Contact Info

Product

Resources

About