This is just a code in a funny contest at: https://www.facebook.com/groups/335069743983293/permalink/340879163402351/

Challenge

Write a program that covert a .jpg color picture to a .jpeg greyscale picture.

1. Without external libraries by Golang.
2. Using maximum 5 go routines.
3. Have use command line paramters.

My solution

Using avarage formula to convert RGB to grey-scale.

grey = (r + g + b) / 3

How to run

The main function recives 2 input:

1. param1: Path to the input file.
2. param2: Path to the ouput file.

Eg:

./main ./color.jpg ./dest.jpg