Difference between revisions of "User:Jholsenback"
Jump to navigation
Jump to search
Jholsenback (talk | contribs) m (cleanup) |
Jholsenback (talk | contribs) m (testing gamma handling excerpt) |
||
Line 4: | Line 4: | ||
===Scratch Pad=== | ===Scratch Pad=== | ||
− | + | <p>The non-linear relationship between <em>color values</em> and actual light intensity is usually approximated by (or calibrated to match) a power-law function (aka <em>gamma function</em>, hence the technical term <em>gamma</em>), i.e.:</p> | |
− | + | <p>[[Image:RefImgGammaFormula.png|gamma formula]]</p> | |
− | |||
− | |||
− | |||
− | + | <p>where [[Image:RefImgXsymbol.png|x symbol]] is the internal representation normalized to the range [0...1], [[Image:RefImgOutputLightIntensity.png|output light intensity]] is the actual output light intensity, and [[Image:RefImgGammaSymbol.png|gamma symbol]] is a value typically somewhere between 2.0 to 2.4, though in the professional image processing world a value of 1.8 is also common.</p> | |
====Keyword Addition Example==== | ====Keyword Addition Example==== |
Revision as of 19:10, 11 December 2010
Organization
Basically, I've been using this area as a scratch pad of sorts. As I complete things, and clean-up I'll probably just add a link here for reference.
Scratch Pad
The non-linear relationship between color values and actual light intensity is usually approximated by (or calibrated to match) a power-law function (aka gamma function, hence the technical term gamma), i.e.:
where is the internal representation normalized to the range [0...1], is the actual output light intensity, and is a value typically somewhere between 2.0 to 2.4, though in the professional image processing world a value of 1.8 is also common.
Keyword Addition Example
This outlines the steps to add a new keyword to the documentation. In this case deprecated
- first determine where the descriptive passage goes then add it
- update the syntax diagram in the appropriate places
- update the syntax diagram in the Quick Reference
- update the Identifiers and Keywords lis)
- document any other place(s) that it's used
- add a table of contents entry