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Level of detail bias (LOD)

English translation: Smoothing or sharpening tool for gaming software

15:12 Jun 4, 2000
English language (monolingual) [PRO]
Tech/Engineering
English term or phrase: Level of detail bias (LOD)
Video card and texture mapping.
Arts & Lettres
Selected answer:Smoothing or sharpening tool for gaming software
Explanation:
Used primarily in scrollin gthrough games. Some of the words explaining LOD Bias are found below:

LOD bias affects the point at which mipmapping levels change. Increasing values for LOD bias makes the overall images blurrier or smoother. Decreasing values make the overall images sharper. Some textures look better if they are very sharp, other look better blurred.

LOD Bias essentially compensates for textures that would otherwise be under or over sampled. Mipmapped textures can be made sharper with a negative bias or blurrier with a positive bias. Unfortunately, by increasing the LOD (with a negative value), aliasing artifacts and texture shimmering in the distances is exacerbated such that it is virtually unbearable at the most detailed settings. The effect is not illustrated too well with screenshots, but it is very obvious as you are moving through the game.

Hope this was of assistance!
Selected response from:

Michael Estes
Grading comment
Graded automatically based on peer agreement.
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
5 +2Smoothing or sharpening tool for gaming software
Michael Estes


  

Answers


532 days   confidence: Answerer confidence 5/5 peer agreement (net): +2
Smoothing or sharpening tool for gaming software


Explanation:
Used primarily in scrollin gthrough games. Some of the words explaining LOD Bias are found below:

LOD bias affects the point at which mipmapping levels change. Increasing values for LOD bias makes the overall images blurrier or smoother. Decreasing values make the overall images sharper. Some textures look better if they are very sharp, other look better blurred.

LOD Bias essentially compensates for textures that would otherwise be under or over sampled. Mipmapped textures can be made sharper with a negative bias or blurrier with a positive bias. Unfortunately, by increasing the LOD (with a negative value), aliasing artifacts and texture shimmering in the distances is exacerbated such that it is virtually unbearable at the most detailed settings. The effect is not illustrated too well with screenshots, but it is very obvious as you are moving through the game.

Hope this was of assistance!


    Reference: http://www.anandtech.com/showdoc.html?i=1276&p=22
    Reference: http://www.voodooextreme.com/3dpulpit/Articles/3Dbuzzwords.h...
Michael Estes
PRO pts in pair: 96
Grading comment
Graded automatically based on peer agreement.

Peer comments on this answer (and responses from the answerer)
agree  Kirill Semenov
1043 days
agree  Robert Donahue (X)
1324 days
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