Evaluation of Correlation Criteria for Sar Images
نویسندگان
چکیده
The aim of this paper is to study the use of cross-correlation for radargrammetric applications. Two other criteria derived from Mean Square Error analysis are proposed. These three criteria are studied using two sets of tests on real data (high resolution, one-look image of a semi-urban area). The £rst test is based on the analysis of the heights of a set of buildings (the heights being obtained using the thresholded disparities computed by one of the criteria). Then the performances are analyzed for each building using the available ground truth. The second test is based on the matching of a set of points. These points are manually associated and the displacement is compared to the one given by the matching criterion. Eventually, the ROC curves are computed to compare the 3 criteria in different situations.
منابع مشابه
Extended ratio edge detector for despeckled SAR image evaluation
Synthetic aperture radar (SAR) images due to the usage of coherent imaging systems are affected by speckle. So lots of despeckling filters have been introduced up to now to suppress the speckle. Hence, objective and subjective evaluation of the denoised SAR images becomes a necessity. Thereby lots of objective evaluating estimators are introduced to evaluate the performance of despeckling filte...
متن کاملEvaluation of Sentinel-1 Interferometric SAR Coherence efficiency for Land Cover Mapping
In this study, the capabilities of Interferometric Synthetic Aperture Radar (InSAR) time series data and machine learning have been evaluated for land cover mapping in Iran. In this way, a time series of Sentinel-1 SAR data (including 16 SLC images with approximately 24 days time interval) from 2018 to 2020 were used for a region of Ahvaz County located in Khuzestan province. Using InSAR proces...
متن کاملThe Extended Sub-look Analysis In Polarimetric SAR Data For Ship Detection
The monitoring of maritime areas with remote sensing is essential for security reasons and also for the conservation of environment. The synthetic aperture radar (SAR) can play an important role in this matter by considering the possibility of acquiring high-resolution images at nighttime and under cloud cover. Recently, the new approaches based on the sub-look analysis for preserving the infor...
متن کاملExtending SAR Image Despckling methods for ViSAR Denoising
Synthetic Aperture Radar (SAR) is widely used in different weather conditions for various applications such as mapping, remote sensing, urban, civil and military monitoring. Recently, a new radar sensor called Video SAR (ViSAR) has been developed to capture sequential frames from moving objects for environmental monitoring applications. Same as SAR images, the major problem of ViSAR is the pres...
متن کاملFeature Enhancement and ATR Performance Using Nonquadratic Optimization-Based SAR Imaging
We present an evaluation of the impact of a recently proposed synthetic aperture radar (SAR) imaging technique on feature enhancement and automatic target recognition (ATR) performance. This image formation technique is based on nonquadratic optimization, and the images it produces appear to exhibit enhanced features. We quantify such feature enhancement through a number of criteria. The findin...
متن کاملAnalysis of the Impact of Non-Quadratic Optimization-based SAR Imaging on Feature Enhancement and ATR Performance
We present an evaluation of the impact of a recently proposed synthetic aperture radar (SAR) imaging technique on feature enhancement and automatic target recognition (ATR) performance. This image formation technique is based on non-quadratic optimization, and the images it produces appear to exhibit enhanced features. In the first part of this paper, we quantify such feature enhancement throug...
متن کامل