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Digital Image Processing

Digital Image Processing. Resizing Image. Resizing Images. Zooming : Creating new pixel locations Assigning gray-level values to these locations. Solution: Interpolation.

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Digital Image Processing

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  1. DigitalImage Processing Resizing Image

  2. Resizing Images Zooming : Creating new pixel locations Assigning gray-level values to these locations Solution: Interpolation

  3. Yang CS, Kao SP, Lee FB, Hung PS. 2004. Twelve Different Interpolation Methods: a Case Study of Surfer 8.0. International Society for Photogrammetry and Remote Sensing; 778–783.

  4. 1. The Inverse Distance to a Power Method 2. The Kriging Method 3. The Minimum Curvature Method 4. The Modified Shepard's Method 5. The Natural Neighbor Method 6. The Nearest Neighbor Method

  5. x7. The Polynomial Regression Method x8. The Radial Basis Function Interpolation Method x9. The Triangulation with Linear Interpolation Method 10. The Moving Average Method 11. The Data Metrics Method 12. The Local Polynomial Method

  6. 3 main type of 2D Interpolations : Nearest neighbor interpolation Bilinear interpolation Bicubic interpolation

  7. Nearest Neighbor Bilinear Bicubic 128 1024 64 1024

  8. We have looked at: What is zooming/upsampling? What is interpolation? What are different types of interpolations? Next time we will talk about aliasingand start to talk about image enhancement Summary

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