Human Vision, Color spaces, Transform
VISION-01; VISION-02
Eyes are such a basic word for us, However it is more profound than just saying it. Eyes are evolved long time ago and today's world a great deal of creatures have complex eyes. Understanding the functioning of eyes contributed a lot to humanbeing and computer vision one of them.
Why do things have eyes:
To see other things!
Visual stimulus is an important signal
Started as photoreceptive protein (eyespots)
How do humans eyes work:
Complex!
Light passes through
Cornea, humours, lens refract light to focus
Hit the retina
Absorbed by photosensitive cells
Info transmitted through optic nerve, processed by visual cortex
RGB is a cube
HSV is cylinder
HUE, SATURATION, VALUE
Different model based on perception of light
Hue: what color
Saturation: how much color
Value: how bright
Allows easy image transforms
Shift the hue
Increase saturation
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