1. Low contrast image
2. High contrast image
3. Night time image
4. Normal image.
The images shown were processed using three different methods shown below:
1. y = 1-x -> where the image will become negative.
2. y = 0.001*x^2-0.023x -> where the image will darken.
3. y = 0.47*x+120 -> where the image will lighten.
-----
The first function shows the negative of the images above. Nothing much is said about it as the colors of the images are only inverted.
-----
The second function makes the images darken. The lights doesn't show much anymore, the shadows highlighted, the images hard to see due to light limitations. It also gives a gloomy feel. The night and high contrast image are not that much affected, as most of its color tend to be on the darker side. But the low contrast and the normal image are much more affected due to the lighting being dimmer.
-----
The third function makes the images lighten. It just filters the images making it look like there is a lighting focused on it, but doesn't change the composition. Every pixel of the images are lighter, but it has much more effect on the darker shades. The night and high contrast image are easier to see, while the low contrast and normal image are hard to look at.
That is all.
