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FPGA Softcore Processor Image Watermark to VGA

An image watermarking tool designed to be run on a Nexys FPGA board while utilizing a softcore 32-bit MIPS processor. It outputs the watermarked image to VGA.

Links

Report: https://docs.google.com/document/d/1GC-dp1_2LBRvRK9D-Qm_UGnKsI6Cl1z8ytL7r9njO7Y/edit?usp=sharing

Slides: https://docs.google.com/presentation/d/1RRghf2R7uE7MKgTz-8tXAMK0WJGQOxzPDTWaPTrblRY/edit?usp=sharing

How To Run

  1. Run Vivado 2018.3 (or greater)
  2. Open project -> ImageWatermark/FPGA/watermark/vivado/MIPS.xpr
  3. Select -> Open Hardware Manager
  4. Select -> Connect
  5. Select -> Program Device

Controls

  • Connect FPGA's VGA port to a monitor
  • Switch J15 controls which image is selected
  • Switch L16 controls which watermark is selected

New Images

  1. Open ImageWatermark/Images/image_convert.m in MATLAB
  2. Change the file input name and the destination name
  3. Open project -> ImageWatermark/FPGA/watermark/vivado/MIPS.xpr
  4. Add your MATLAB generated *.mem file to the project
  5. Other *.mem files are located -> ImageWatermark/FPGA/vga

New Programs

  1. To create custom programs, design MIPS assembly to run in SPIM or QtSPIM
  2. Test code is located -> ImageWatermark/FPGA/processor/setup
  3. Convert your program to hexadecimal (http://www.kurtm.net/mipsasm/index.cgi)
  4. Paste the hexadecimal code between a 'begin' and 'end' statement (see text files under /setup)
  5. Run the following command: "python convert_inst.py <YOUR_FILE_NAME.txt>"
  6. Paste the generated Verilog code -> ImageWatermark/FPGA/processor/inst_memory.v

Contributors

  • Jacob London
  • Paul Barrameda
  • Dylan Reyes
  • Tiffany Dewitt
  • Devin Kawamoto-Kindred
  • Dr. Mohamed Aly

Resources