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Paint-By-Numbers Puzzle Solver Using Java and Advanced Imaging Techniques

Explore the fascinating world of Paint-By-Numbers puzzles with a comprehensive approach to solving them. This project, developed in Spring 2006 as part of CS491B, introduces algorithms like FastLineSolver and CompleteLineSolver to tackle these engaging challenges. Utilizing Java 2 SE 5.0 and Javagram JAI, it employs advanced imaging to support multiple file formats. The solution includes a recursive guessing technique to navigate conflicts and uncertainties, ensuring an efficient puzzle-solving experience. Join in and learn how to make the computer think and solve puzzles systematically!

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Paint-By-Numbers Puzzle Solver Using Java and Advanced Imaging Techniques

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Presentation Transcript

  1. Paint-By-Numbers Puzzle Chanwit Suebsureekul CS491B Spring 2006

  2. Introduction • The black cells are hiding • Find them! • Use numbers as clues

  3. The Rule • Each number represents the number of contiguous black cells, called a block • There must be “at least” one space between blocks • The blocks are in the same sequenceas the numbers

  4. Motivation • Mario’s Picross • Can we make the computer think

  5. Objective • Puzzle Solver • Game • Puzzle Editor • Edit by numbers • Edit by painting

  6. Technology • J2SE 5.0 • Java Advanced Imaging (JAI) • Javagram

  7. JAI • Advance Image Processing Original 64x64 Resized 20x20 Grayscale Monochrome • Support standard image file formats • BMP, GIF, JPEG, PNG, TIFF, etc.

  8. Javagram • Created by Steven Simpson • Solve a puzzle one line at a time • LineSolver class • FastLineSolver • CompleteLineSolver

  9. FastLineSolver • Use the “Pushing Technique” • Push to the left • Push to the right • Look for the overlap

  10. FastLineSolver Example Push Push

  11. CompleteLineSolver • Try all possibilities • Look for the overlap

  12. CompleteLineSolver Example

  13. FastLineSolverVSCompleteLineSolver • FastLineSolver is much faster • CompleteLineSolver guarantees the best result

  14. Example FastLineSolver CompleteLineSolver

  15. Javagram Deficiency (1) • A conflict

  16. Javagram Deficiency (2) • Multiple solutions

  17. Javagram Deficiency (3) • Not enough clue

  18. Recursive Guessing Main Program Puzzle Javagram Recursive Guessing Solution

  19. Guessing Technique • Pick a random unsolved cell • Make a guess • Continue solving puzzle • If conflict, rollback and change the guessed cell (wrong guess) • If not conflict, find the solution (right guess) • Still have to rollback and try another path

  20. Why Recursive?

  21. Demo

  22. Summary • Paint by Numbers puzzle • JAI • Javagram • FastLineSolver • CompleteLineSolver • Recursive Guessing Technique

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