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dither indicates if the image should be dithered - if it is true then dithering will be used which will result in a more speckled image but with better color approximation.
dither indicates if the image should be dithered - if it is true then dithering will be used which will result in a more speckled image but with better color approximation.
Senast uppdaterad: 2011-10-24
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참고: there is a problem due to palette image limitations (255+1 colors). resampling or filtering an image commonly needs more colors than 255, a kind of approximation is used to calculate the new resampled pixel and its color. with a palette image we try to allocate a new color, if that failed, we choose the closest (in theory) computed color. this is not always the closest visual color. that may produce a weird result, like blank (or visually blank) images. to skip this problem, please use a truecolor image as a destination image, such as one created by imagecreatetruecolor().
with a palette image we try to allocate a new color, if that failed, we choose the closest (in theory) computed color.
Senast uppdaterad: 2011-10-24
Användningsfrekvens: 1
Kvalitet:
