Wurlitzer Posted February 26, 2007 Share Posted February 26, 2007 Hi all, This question may be a bit of a long shot, but does anybody know how to normalize (contrast-stretch) a picture in php? Contrast stretching is what Photoshop calls "Auto Contrast". For example, here is a way to sharpen a picture: vikjavev.no/computing/ump.php Thanks! Link to comment https://forums.phpfreaks.com/topic/40095-contrast-stretching/ Share on other sites More sharing options...
fert Posted February 26, 2007 Share Posted February 26, 2007 If you can do it it'll be here: http://us3.php.net/manual/en/ref.image.php Link to comment https://forums.phpfreaks.com/topic/40095-contrast-stretching/#findComment-193997 Share on other sites More sharing options...
Wurlitzer Posted February 27, 2007 Author Share Posted February 27, 2007 Hi, Thanks for the reply. A bit of googling led me to phpThumb, a neat set of scripts that performs various image manipulations, including contrast-stretching. Link to comment https://forums.phpfreaks.com/topic/40095-contrast-stretching/#findComment-195075 Share on other sites More sharing options...
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