Task #2: Histogram Equalization on RGB and HSI

1. Read the football.jpg image
2. Histogram Equalize each component of RGB image then display the equalized image.
3. Histogram Equalize the intensity component only of HSI image then display the equalized image in RGB model.
4. Histogram Equalize the intensity component only of HSI image and then increase the saturation component by amount of 0.2, after that, Display the equalized image in RGB model.

Hint: you need to use functions rgb2hsv and hsv2rgb to convert between rgb and hsi models.