land use may be regarded as one of the most important factors affecting theenvironment with respect to human activities. so far, destroying the rangelands andchanging them into the waste lands and poor rangelands has been proposed as the mostsignificant variations of land use done by human beings. this paper has been conducted toevaluate the variations of vegetation percentage and land uses in ...

In this paper we evaluate the performance of scene detection techniques, starting from the classic precision/recall approach, moving to the better designed coverage/overflow measures, and finally proposing an improved metric, in order to solve frequently observed cases in which the numeric interpretation is different from the expected results. Numerical evaluation is performed on two recent pro...

We present a physically-based clutter model for low frequency synthetic aperture radar that includes both distributed scatterers and large-amplitude discrete clutter. The model is used to generate a synthetic forest clutter scene comprised of two components, a background component and a heavy-tailed discrete component. Model parameters are based on characteristics of the scene, such as the rada...

Natural scene images are generally captured with portable devices such as mobile phone cameras. Scene images contains text information as part of captured scene. Scene image text poses difficultly in processing as compared to document text due to complexity of scene and open environment conditions. Scene images usually suffer from skew deformation due to inherent nature of portable capturing de...

Change detection is essential for visual perception and performance in our environment. However, observers often miss changes that should be easily noticed. A failure in any of the processes involved in conscious detection (encoding the pre-change display, maintenance of that information within working memory, and comparison of the pre and post change displays) can lead to change blindness. Giv...

We present an approach for identifying and segmenting independently moving objects from dense scene flow information, using a moving stereo camera system. The detection and segmentation is challenging due to camera movement and non-rigid object motion. The disparity, change in disparity, and the optical flow are estimated in the image domain and the three-dimensional motion is inferred from the...

a study of substantial anthropogenic related pollution in the coastal samut prakarn province (thailand) was carried out focusing on the bang pu nature reserve (remnant mangrove wetland) using a remote sensing (geospatial) technique. statistical regression models were developed between biochemical parameters of sample point and related reflectance data obtained from satellite imagery (landsat tm...

Appendices 89 A 89 B 93 C 95 D 97 Bibliography 101 Introduction A topic of great interest in the Remote Sensing, Signal Processing, and Synthetic Aperture Radar (SAR) communities is change detection. This is the ability to identify temporal changes within a given scene starting from a pair of co-registered SAR images representing an area of interest [1–3]. Incoherent and coherent change detecti...

The technique of coherent change detection in repeat-pass Synthetic Aperture Radar imagery has the potential to detect very subtle scene changes such as changes in man-made targets or potential human activities. In this paper, we propose a simple method for detecting temporal changes in a scene possibly caused by human activities, such as building up areas of hard surface on a terrain that was ...

In this paper, we address the problem of performance evaluation (PE) of video scene detection algorithms. An objective and comprehensive protocol for performance evaluation and comparison of different scene detection algorithms is proposed. Unlike traditional precision-recall measures, the proposed PE measures treat false alarms unequally, and take the extent of incorrectness of the wrongly det...