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Sudoku Solver

Sudoku Solver. By: Adam Hebert. Discussed Topics. Why Sudoku? Attempts at an App MATLAB Implementation - Use of webcam - Algorithm Problems with method Demonstration Questions. Why Sudoku?. Not Skilled Fun project Practical if on Android Original Idea.

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Sudoku Solver

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  1. Sudoku Solver By: Adam Hebert

  2. Discussed Topics • Why Sudoku? • Attempts at an App • MATLAB Implementation - Use of webcam - Algorithm • Problems with method • Demonstration • Questions

  3. Why Sudoku? • Not Skilled • Fun project • Practical if on Android • Original Idea

  4. Attempts at an App • ADDI - Can type in MATLAB code - Upload .m files to phone - Open .m files using program - Only runs basic commands • MLConnect - Creates server on PC using MATLAB - Allows you to connect to server on android device - Must be on local network - Not Practical

  5. MATLAB Implementation • Failed to create Android App - Unable to convert MATLAB into useable C/Java code - Lack of time - Did use MATLAB complier - Had issues with resulting code

  6. Use of webcam • Takes input frames from cam - videoinput('winvideo',1,'YUY2_640x480'); • Makes input video black and white • Reduces noise • Checks each row and column for a number that matches the template • Creates a red circle around objects that match template • Takes those inputs and stores into 2d matrix

  7. Algorithm • Checks the row/column/block to see if there is only 1 possible number • If so, it uses that number, then updates the other blocks • If there is greater than 1 possible number, it checks each to see which is correct • Essentially makes an educated guess as to which is correct • Checks results • Uses a 3d matrix • Outputs the result in a Sudoku template

  8. Problems with method • Tried newspaper cutout • Has trouble detecting puzzle on dark backgrounds • Border needs to be thick • Template restraints • Edges needs to be straight

  9. Demonstration!

  10. Questions?

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