1 / 32

PHOTO MOSAIC

PHOTO MOSAIC. 組員： B98902041 李庚道 B98902047 徐 哲 B98902107 古長霖. WHAT IS PHOTO MOSAIC ?. 圖片來源 : http://www.ou-online.com/blog/?p=366. HOW WE DO IT – Generate the features . STEP 1 Find a sufficient amount of photos in .raw format. HOW WE DO IT – Generate the features .

chipo
Télécharger la présentation

PHOTO MOSAIC

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PHOTO MOSAIC 組員： B98902041 李庚道 B98902047 徐 哲 B98902107 古長霖

  2. WHATISPHOTOMOSAIC? 圖片來源:http://www.ou-online.com/blog/?p=366

  3. HOW WEDO IT – Generate the features • STEP 1 Find a sufficient amount of photos in .raw format

  4. HOW WEDO IT – Generate the features • STEP 2 Compress each image into the size of 8x8, 16x16 and 32x32 pixels. We called those compressed images tiles.

  5. HOW WEDO IT – Generate the features • STEP 3 Divide the 8x8(or 16x16, 32x32) tileinto 5 regions(R1~R5)

  6. HOW WEDO IT – Generate the features • STEP 4 Generate the features(R,G,B,Y,I,Q) of each region(There are 30 features in each tile), and write the features in a .txt file

  7. HOW WEDO IT – Generate the features • Introduction of YIQ color space YIQ is the color space used by NTSC color TV system. Y: Brightness I: In-phase (Change from orange to blue) Q: Quadrature-phase (Change from purple to green)

  8. HOW WEDO IT – Preprocess for the input image • STEP 1 Compress the input image into the image which both its length and width can be divided by 32

  9. HOW WEDO IT – Preprocess for the input image • STEP 2 Divide the modified image into several 8x8 (16x16, 32x32) images.

  10. HOW WEDO IT – Feature comparison • STEP 1 Calculate the distance between each 8x8 (16x16, 32x32) segment of the input image and the tiles.(We used two kinds of formula)

  11. HOW WEDO IT – Feature comparison • STEP 2 Find the tile in our database which has the shortest distance with the 8x8(16x16, 32x32) segment of the input image and replace it with the tile.

  12. Result • Input Image

  13. Result • Input Image after size modification

  14. Result • Mosaic using 32x32 tile

  15. Result • Mosaic using 16x16 tile

  16. Result • Mosaic using 8x8 tile

  17. Result • 32x32 tile • Original image • 16x16 tile • 8x8 tile

  18. Result • 32x32 tile • 16x16 tile • 8x8 tile • Original image

  19. Discussion – Different distance formula • Formula 1: • Original image • Formula 2:

  20. Discussion – Different distance formula • Distance1 • Distance2 • Mosaic with 1200 32x32 tiles in the database

  21. Discussion – Different distance formula • Distance1 • Distance2 • Mosaic with 1200 16x16 tiles in the database

  22. Discussion – Different distance formula • Distance1 • Distance2 • Mosaic with 1200 8x8 tiles in the database

  23. Discussion – Different distance formula • Distance1 • Distance2 • Mosaic with 4886 32x32 tiles in the database

  24. Discussion – Different distance formula • Distance1 • Distance2 • Mosaic with 4886 16x16 tiles in the database

  25. Discussion – Different distance formula • Distance1 • Distance2 • Mosaic with 4886 8x8 tiles in the database

  26. Discussion – Different database • Original image

  27. Discussion – Different database • Mosaic with 500 16x16 tiles in the database

  28. Discussion – Different database • Mosaic with 1200 16x16 tiles in the database

  29. Discussion – Different database • Mosaic with 4886 16x16 tiles in the database

  30. Discussion – Different database • Mosaic with 500 8x8 tiles in the database

  31. Discussion – Different database • Mosaic with 1200 8x8 tiles in the database

  32. Discussion – Different database • Mosaic with 4886 8x8 tiles in the database

More Related