javascript - Resize image using Canvas awkward behavior -

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i want displayed, big image , resize drawing on canvas.

i found following fiddle:

http://jsfiddle.net/abdiassoftware/v8app/

exisitng

this seems work great since want use resize images , store them later on. however, when try use uploaded images awkward behavior:

result img: enter image description here

thanks

link image: frankh.ursa.uberspace.de/img/34.png


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