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Image interpolation with Javascript

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Hi everyone,

I have a picture that I draw pixel by pixel on the canvas. Size of the image: 512 * 256. When I make this picture 1536 * 768, the image looks very bad.
I think I can use interpolation to fix this. But I couldn't find a good javascript library. It didn't work in the libraries I found.

Is there anyone who can help me with this?

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It might help us to reply if we knew why you are drawing it "pixel by pixel". Why not canvas.context.drawimage ()?

Enlarging an image by a factor of 3 is unlikely to produce a sharp result though. Better to start with the larger version and then reduce if or when necessary.

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