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

• http://www.mrc.uidaho.edu/mrc/people/jff/digital/MIPSir.html
• http://www.dsi.unive.it/~gasparetto/materials/MIPS_Instruction_Set.pdf
• https://opencores.org/projects/plasma/opcodes