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Filter (less) Instructions

tl;dr

Implement a program that applies filters to BMPs, per the below.

$ ./filter -r image.bmp reflected.bmp

Specification

Implement the functions in helpers.c such that a user can apply grayscale sepia, reflection, or blur filters to their images.

• The function grayscale should take an image and turn it into a black-and-white version of the same image.
• The function sepia should take an image and turn it into a sepia version of the same image.
• The reflect function should take an image and reflect it horizontally.
• Finally, the blur function should take an image and turn it into a box-blurred version of the same image.

You should not modify any of the function signatures, nor should you modify any other files other than helpers.c.

Usage

Your program should behave per the examples below.

$ ./filter -g infile.bmp outfile.bmp

$ ./filter -s infile.bmp outfile.bmp

$ ./filter -r infile.bmp outfile.bmp

$ ./filter -b infile.bmp outfile.bmp

Full instructions available here