A Band Ratio Approach for Classification in Shaded Area
نویسندگان
چکیده
The shadow effect is always a major problem for optical remote sensing images classification. This effect is occurred because of topography terrain or clouds, which may cause the same material classified into two different classes. One feature of shaded area in optical images is that the values of all bands are small and this property can provide useful information to reduce the shadow effect. The band ratio approach should play an important role to eliminate the shadow effect. In this study, we proposed the adjacent band ratio approach to reduce the shaded effect and also employ an unsupervised classification algorithm. The experiment result showed that, the ratio approach certainly has potential to improve the classification performance in shaded region.
منابع مشابه
A Comparative Study of SVM and RF Methods for Classification of Alteration Zones Using Remotely Sensed Data
Identification and mapping of the significant alterations are the main objectives of the exploration geochemical surveys. The field study is time-consuming and costly to produce the classified maps. Therefore, the processing of remotely sensed data, which provide timely and multi-band (multi-layer) data, can be substituted for the field study. In this study, the ASTER imagery is used for altera...
متن کاملClassification of emotional speech using spectral pattern features
Speech Emotion Recognition (SER) is a new and challenging research area with a wide range of applications in man-machine interactions. The aim of a SER system is to recognize human emotion by analyzing the acoustics of speech sound. In this study, we propose Spectral Pattern features (SPs) and Harmonic Energy features (HEs) for emotion recognition. These features extracted from the spectrogram ...
متن کاملCooling Effect of Shaded Open Spaces on Long-term Outdoor Comfort by Evaluation of UTCI Index in two Universities of Tehran.
Environmental matters are more complicated. Sustainability of environment requires an integrated approach to decisions making, planning, and management. Therefore, there is a need for a professional and systematic environmental management approach to reducing the consumption of resources. This approach is generally lacking in most universities, and therefore achievement of sustainability become...
متن کاملStudying Effectiveness of Landsat ETM+ Satellite Images Classification Methods in Identification of desert pavements (Case study: South of Semnan)
Extended abstract 1- Introduction The process of identifying landforms is a subject that has been researched by many researchers. All the definitions of geomorphology emphasize the study and identification of landforms. Understanding landforms and how they are distributed are some sort of essential requirements in applied geomorphology and other environmental sciences (Shayan et al., 2012). O...
متن کاملApplication of grey GIS filtration to identify the potential area for cement plants in South Khorasan Province, Eastern Iran
Cement-based materials are fundamental resources used to in construction. The increase in requests for and consumption of cement products, especially in Iran, indicates that more cement plants should be equipped. This study developed a geographical information system using pairwise comparison based on grey numbers to identify potential sites in which to set up cement plants. A group of five exp...
متن کامل