Image processing in C

Overview of the Program

• apply_NOISE: Applies random noise to the Image, adding a random value to the RGB components of the Image.

• apply_CODE: reveals the source of the image in R,G,B format including the width and height, so you can copy the code on to another program if needed.

Using makefile to compile the code

1. Make sure you're in the directory where the makefile is located.

2. To run the make file, run make in your terminal (Assuming that the makefile and the process are both located at the same directory)

3. Running the above command should create a new executable called process in the directory you're currently at.

4. If you want to know how to compile the program using GCC, follow the below steps.

Compiling the program using GCC

1. Make sure you have (GNU C Compiler) installed on your machine
2. To compile the proces file, use:

   gcc process.c -o process

3. To run process on a given image use:

   ./process input_file output_file noise_strength

   For example:

   ./process coffee.hs16 coffee_processed.hs16 10000

4. Running the above given command will create a file with the given output file name, which will be the processed image.

Giving in multiple files to process

1. To pass in multiple input files to process, follow the below steps:
   • Pass in multiple files to process using the below given syntax:

     ./process input_file1 output_file1 noise_strength1 input_file2 output_file2 noise_strength2 input_file3 output_file3 noise_strength3 ...

   • For example:

     ./process coffee.hs16 coffee_processed.hs16 10000 music.hs16 music_processed.hs16 50000

Note

• To view the hs16 formatted image, use hsconvert
• Use hsconvert like below:
  1. Ensure you have the hsconvert file on the machine
  2. Ensure you have a program or website to view PPM files, it's recommended to install the VSCode extension called "PBM/PPM/PGM Viewer for Visual Studio Code"
  3. After making sure you have both of the above, Run:

     ./hsconvert -f PPM inputfile.hs16 outputfile.ppm

     For example:

     ./hsconvert -f PPM coffee.hs16 coffee.ppm

Additional Notes

• Memory Usage for the program, the program loads in all images into memory before processing.