Apply gradient map to an image file

Requirements:

• cv2, numpy and matplotlib

Params:

• python gradiend_map.py -i filename.jpg Input image file. (jpg or png)
• python gradiend_map.py -o filename.jpg Output file name. (default: image_mapped.jpg)
• python gradiend_map.py -w Hexadecimal color for white end of spectrum. (default: #000000)
• python gradiend_map.py -b Hexadecimal color for black end of spectrum. (default: #ffffff)
• python gradiend_map.py -h to show more info

Usage:

• python gradiend_map.py -i 'image.jpg' Creates a black and white copy of the image named image_mapped.jpg
• python gradiend_map.py -i 'image.jpg' -o 'something.jpg' Creates a black and white copy of the image named something.jpg
• python gradiend_map.py -i 'image.jpg' -w '#ffff00' -b '#ff0000' Creates an image going from yellow to red named image_mapped.jpg