A Review: Shadow Detection And Shadow Removal from Images.
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2013, Vol 4, Issue 5
Abstract
Shadows appear in remote sensing images due to elevated objects. Shadows cause hindrance to correct feature extraction of image features like buildings ,towers etc. in urban areas it may also cause false color tone and shape distortion of objects, which degrades the quality of images. Hence, it is important to segment shadow regions and restore their information for image interpretation. This paper presents an efficient and simple approach for shadow detection and removal based on HSV color model in complex urban color remote sensing images for solving problems caused by shadows. In the proposed method shadows are detected using normalized difference index and subsequent thresholding based on Otsu’s method. Once the shadows are detected they are classified and a non shadow area around each shadow termed as buffer area is estimated using morphological operators. The mean and variance of these buffer areas are used to compensate the shadowregions.
Authors and Affiliations
Shibam Das1 , Ambika Aery
Keywords
Related Articles
- EP ID EP135793
- DOI -
- Views 121
- Downloads 0
Size and Topological Optimization of Cantilever Beam
Optimization is the process of selecting the best possible results among many possible results under given circumstances. Mathematically it is finding the global maxima or minima of a function. This paper concerns...
Mechanical Agitation of Bed In A Motor Driven Two-Phase Fluidized Bed Particle Seeder
Solid-gas Fluidization generally pertains to particle-laden flows wherein seed particles of desired size are dispersed in a fluid volume inside a fluidized bed seeder. The present work includes numerical investigation...
Performance Improvement of OFDM System Using Iterative Signal Clipping With Various Window Techniques for PAPR Reduction
OFDM signals demonstrates high fluctuations termed as Peak to Average Power Ratio (PAPR).The problem of OFDM is the frequent occurrence of high Peaks in the time domain signal which in turn reduces the efficiency o...
Implementation of Adaptive Viterbi Decoder
Viterbi algorithm is employed in wireless communication to decode the convolutional codes; those codes are used in every robust digital communication systems. Such decoders are complex & dissipiate large am...
A Typical Assessment Of Photovoltaic Array: Modelling, Simulation and Application Aspects
The paper provides a deep insight into PV array behaviour. The paper provides the information regarding modelling techniques and its simulations. It also presents different installation aspects and power handling...