Re: Percent of what? A proposal

phil-news-nospam@xxxxxxxx wrote:

|> "Vague"? OK, maybe I meant that %'s meaning is too dependent on the
|> context in which it is used, | | They have to be dependent on the context in which they're used. They | are fractions of something. What they are fractions of dependents on | what they are and on where they are in relation to something else.

And you have to know that in order to do the calculation correctly.

So you're saying it would be better to have 18 new values ALL of which can only be used in certain contexts. Surely you'd have to be aware of where it's appropriate to use each of the new values too. Which means you have exactly the same problem but now you can choose from one of eighteen different solutions.

|> Gamma correction: do some research if you don't know what it's about.
|> Check out http://www.geocities.com/therealbirdin/Standards/#sRGB where
|> I think I did a semi-decent job of explaining why it's important.
| | Why are people giving me pointers to gamma correction? I never asked. | The % value isn't to do with gamma it's simply to do with a percentage | of an 8 bit number.

Which is a totally assinine way to calculate intensity values.

Why, semantically it's perfectly correct. It's like saying that a 50% of a box of width:300px; is 150px. You don't need to be concerned about the area. You don't need to be concerned about the position of the moon. Everyone understands that 50% of the width value means the width value divided by 2.

You would
know that if you understood gamma correction and how calculations that do
not take it into consideration affect chromaticity.

You would know if you understood the spec what it's actually a percentage of. Every time you mention gamma it's still not about gamma. You could just reply to EVERY post with the words "GAMMA GAMMA GAMMA" and it still wouldn't be about gamma. It's not about gamma. How don't you understand that.

This is why I asked my question of you in the first case. I want to see
if you genuinely understand color, and how gamma correction affects it.
I'll try the question in a different way: If your intention is to get a
gray value which is exactly half the intensity of the color #ffffff, what
will be the code you would expect to see as a result?

I wouldn't be. I never even think of the colour intensity. If I want a gray value I'll go into paint, double-click gray, move the lum pointer up and down until I get a colour I like, translate the rgb values into hex and there it is.


--
Brian O'Connor (ironcorona)
.

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