What is object based image analysis? Discuss the major steps involved in the object based image analysis.
Object-Based Image Analysis (OBIA) is a sophisticated approach in remote sensing and Geographic Information Systems (GIS) that segments and classifies satellite and aerial imagery based on distinct objects rather than individual pixels. This method contrasts with traditional pixel-based approaches, where classification is done at the pixel level. OBIA aims to capture the spatial, contextual, and spectral information of objects, providing a more accurate and meaningful analysis of the landscape.
Major Steps in Object-Based Image Analysis
1. Image Preprocessing
- Radiometric and Geometric Correction: Before conducting object-based analysis, the imagery is often subjected to radiometric correction to correct sensor anomalies and atmospheric _________ _______ __________ ______ _________ ___ _________ __________ _____ ________ ____.
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