streak
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− | {{DavinciWiki_Glossary|Streak is an image artifact from other row and | + | {{DavinciWiki_Glossary| |
+ | Streak is an image artifact from the failure of other row- and column-correlated noise clean up algorithms, such as [[thm.deplaid]] and [[destripe]], caused by boundries of hot and cold areas in [[radiance]] space. These algorithms utilize a black-mask technique that has the possibility of failure in certain images with extreme temperature differences. | ||
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+ | It shows up predominantly in [[decorrelation stretch]] images as row- and column-correlated brightness variations of multiple pixel widths in emissivity images. Streak differs from [[plaid]] in that it is <i>not</i> a spectral variation, rather it is a <i>brightness</i> variation and is therefore an increased or decreased signal across all bands. | ||
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+ | It generally occurs because the temperature masks used in these algorithms do not function perfectly. | ||
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+ | [[image:destreak1.png]]}} | ||
[[category:Glossary]] | [[category:Glossary]] |
Latest revision as of 20:33, 21 April 2006
Description Streak is an image artifact from the failure of other row- and column-correlated noise clean up algorithms, such as thm.deplaid and destripe, caused by boundries of hot and cold areas in radiance space. These algorithms utilize a black-mask technique that has the possibility of failure in certain images with extreme temperature differences. It shows up predominantly in decorrelation stretch images as row- and column-correlated brightness variations of multiple pixel widths in emissivity images. Streak differs from plaid in that it is not a spectral variation, rather it is a brightness variation and is therefore an increased or decreased signal across all bands. It generally occurs because the temperature masks used in these algorithms do not function perfectly. |
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