Re: Explanation of Component Video

On May 7, 11:39 pm, "William Garber" <willy4...@xxxxxxxxxxxxxxxx>
wrote:
For those of you, as I, who were having trouble
with this, here is a site that really does it a
good turn. Have a read.

http://www.projectorcentral.com/component.htm

I got to this point:

"Starting at the beginning: RGB

Believe it or not, your eyes can see only three colors-red, green, and
blue. All of the other colors and shades of the spectrum you perceive
are the result of your brain interpreting the mix of red, green, and
blue signals coming from your eyes. Pigments of your imagination, you
might call them. (Sorry.)"

Hmm, enjoy reading this too:

<http://www.diycalculator.com/popup-m-cvision.shtml#A7>
<http://en.wikipedia.org/wiki/Cone_cells>
<http://en.wikipedia.org/wiki/Rod_cell>

(there are other (cool) articles about other topics in there:
<http://www.diycalculator.com/cool.shtml>)

Our eyes (human retinas) have 100 million almost exclusively blue-
sensitive photosensors (the rod cells) that allow us to see in low-
light conditions,

And about 4.5 million color photosensors (the cone cells), with which
we perceive the color.

These *don't sense "in" RGB*, but yellowish-green, bluish-green and
blue-violetish... !
That (partially) explains why we are not equally sensitive to R,G and
B..
Our eyes are (4.5..6)/3=1.5..2 "megapixel cameras" (each eye).. (too
bad ?)

(back to reading the rest of the article.. :-)

Regards,
--Jorge.

.

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