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Rajini, V.
- Satellite Image Segmentation Based on YCbCr Color Space
Abstract Views :227 |
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Authors
Affiliations
1 Sathyabama University, Chennai, IN
2 Department of Electrical and Electronics, SSN College of Engineering, Chennai, IN
1 Sathyabama University, Chennai, IN
2 Department of Electrical and Electronics, SSN College of Engineering, Chennai, IN
Source
Indian Journal of Science and Technology, Vol 8, No 1 (2015), Pagination: 35-41Abstract
Segmentation is one of the most important processes in the satellite image processing to retrieve most useful information from the satellite images. This paper proposed an effective fuzzy based method of segmentation of satellite images in YCbCr color space. The YCbCr Color space represents color as intensity and exploits the characteristics of human eye. Our eye is more sensitive to intensity than hue. The intensity component can be stored with greater accuracy as the amount of information to be minimized. The JPEG file format mostly uses this color space to discard the unwanted or unimportant information. In the proposed approach, the satellite image in RGB color space is transform into YCbCr color space and then the transformed satellite image is split into three different components (channels or images) based on luminance and chrominance. Subsequently Fuzzy based segmentation is applied separately for all three components for efficient segmentation. Finally the threshold is applied to extract the foreground (object) from the background. The experimental result reveals that the proposed fuzzy based segmentation method is efficient and accurate for extracting the necessary information from the satellite images.Keywords
Color Space, FCM, Image Segmentation, RGB, Satellite Image, Threshold, YCbCr.- Information Theoretic Criteria for Induction Motor Fault Identification
Abstract Views :182 |
PDF Views:0
Authors
Affiliations
1 EEE, SSNCE, Chennai - 603110, Tamil Nadu, IN
1 EEE, SSNCE, Chennai - 603110, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 30 (2015), Pagination:Abstract
The objective of our work is to identify the inter-turn incipient short fault that occurs in the induction motor at no load condition. The method used in fault identification is Information Theoretic Criteria, which uses Frequency Signal Dimension Order (FSDO) estimator and fault decision module. The FSDO estimator estimates the number of frequencies in stator current signatures using Minimum Description Length (MDL) criterion and Akaike Information Criteria (AIC). Fault decision module uses the number of frequencies as fault index in detecting the fault and identifying the fault severity. The proposed method is able to identify the fault from the data buried in noise. MDL yields consistent estimate, the fault index obtained using MDL criterion is considered for diagnosing the faults. The CDF plot of MDL and AIC helps in proving the fault severity results obtained from fault index value. With very lesser values of sampled data, the proposed method is able to distinguish between healthy and faulty conditions. This novel approach diagnoses the inter-turn incipient fault with very simple calculation and it needs only very few number of measured data for estimating the number of fault frequencies associated with the faulty conditions.Keywords
Akaike Information Criteria (AIC), Cumulative Density Function (CDF), Information Theoretic Criteria (ITC), Inter-turn incipient short circuit fault, Minimum Description Length (MDL) Criteria and Stator Faults- Parametric Method based Inter-Turn Incipient Short Circuit Stator Fault Detection of Induction Motor
Abstract Views :159 |
PDF Views:0
Authors
Affiliations
1 EEE, SSNCE, Old Mahabalipuram Road, Kalavakkam, Chennai - 603110, Tamil Nadu, IN
1 EEE, SSNCE, Old Mahabalipuram Road, Kalavakkam, Chennai - 603110, Tamil Nadu, IN