15 Digital image processing

B.A Geography
Remote Sensing
15 Digital image processing
Objectives
Visual interpretation of remote sensing images is one of the most powerful ways to retrieve information. Depending on the quality of image and human expertise in image interpretation, many of the attributes are readily identified by human eyes. However, at times it is required to highlight (enhance) certain features of interest in images to make the image better interpretable. This is achieved by techniques known as image enhancement and transformation techniques required to increase the quality of remote sensing data.for this purpose we have digital image processing which improve the quality of the image. In this chapter we will discuss about
1. Image processing stages
2. Preprocessing
3. Image enhancement
4. Image classification
• Supervised
• Unsupervised
5. Image transformation
6. Advantages of image processing
7. Components of image processing system
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