July 1, 2013 to March 31, 2014 - "18th International Post Graduate course in RS and GIS" at Indian institute of remote sensing,  conducted by Centre for space science and technology education in Asia and the Pacific. (www.cssteap.org)

     This course was very helpful. By attending to the course I improved my knowledge and learned a lot in area of remote sensing, photogrammetry, geoinformatic, image analysis and GNSS technologies. Duration of the course was 10 months and this period was divided to the three modules, which are shown below.

         Module 1 (4 months) : Covered Basics of Photogrammetry and Remote Sensing

         Module 2 (3 months) : Covered advances of Geodetic surveying, Photogrammetry, Remote Sensing and Satellite image Analysis 

         Module 3 (3 months) : This module exclusively was given for project work.

 

After finishing two previous modules I have decide to implement my given knowledge in area of digital photogrammetry and chose theme "Effect of orthorectification on image fusion techniques for KOMPSAT-3 image" as my project work.

 

        My research objectives were:

1. To study the effect of ortho image rectification (with or without GCPs) in image fusion.

2. To evaluate 11 image fusion techniques such as; Gram- Schmidt, Ehlers, PCA, Modified IHS resolution merge, Wavelet Principal Component, Wavelet Intensity Hue Saturation, Wavelet Single Band, Brovey transform, Multiplicative, High Pass Filter and ESRI for KOMPSAT-3 data.

3. To compare the image fusion outputs using quantitative method.

4. To integrate the spatial information from the high resolution data with multispectral data for application in cadastral mapping.

      As a result of my research have been found that accuracy of image fusion in pixel-level most depend from pre-processing work which are geometric correction and radiometric correction . 

      It has been observed that HPF, Ehlers and Modified IHS fusion techniques have been preserving most spectral information comparing with other fusion techniques, while monitoring ERGAS index as well as visual analysis. 

      It has been also observed that HPF and Ehlers fusion techniques are preserving most spatial information comparing with other fusion techniques, while monitoring correlation coefficient index.

      It has been also observed that when rectified pan image was fused with orthorectified MS image, ERGAS index for spectral information and Correlation Coefficient for spatial information of fused image have shown more deviation.

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For more information about my diploma thesis click to this Link: 

 

 

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