sheldon-pang / bmp-image-processor

C program that loads an BMP image file, applies filtering, and save back to disk, with multi-thread processing support.

BMP-Image-Processor

/**

• A program that read an BMP image file, applying filter, and save to disk.
• Filter implemented in this version:
• 1. Grayscale Filter
• 2. Color Shift Filter
• 3. Scaling Filter
• @author Sheldon Pang
• @version 1.1
• Update info:
• In version 1.1: fixed image offset issue.
• Now will skip bytes based on the image offset value, and update the output file's offset value accordingly. */

Note: command to compile in gcc 'gcc PangImageProcessor.c Image.c BMPHandler.c -o ImageProcessor'

usage:

          ./ImageProcessor -f filename [-h] [-r -g -b val] [-w] [-s val] [-o filename]
               -f  filename:    must have a input file name  to run!
               -r  value:       use value to increase or decrease the color red
               -g  value:       use value to increase or decrease the color green
               -b  value:       use value to increase or decrease the color blue
               -w:              convert RGB to grayscale equivalent
               -s  float:       use value to resize the image
               -o  filename:    optional to customize output filename
               -h:              print out this help message