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Update README.md

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jst 2014-07-19 14:00:14 +02:00
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@ -87,6 +87,13 @@ func main() {
} }
``` ```
Caveats
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* Optimized access routines are used for `image.RGBA`, `image.RGBA64`, `image.YCbCr`, `image.Gray`, and `image.Gray16` types. All other image types are accessed in a generic way that will result in slow processing speed.
* JPEG images are stored in `image.YCbCr`. This image format stores data in a way that will decrease processing speed. A resize may be up to 2 times slower than with `image.RGBA`.
Downsizing Samples Downsizing Samples
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