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JPEG-2000: Can I dynamically resize an image without resampling?

One of the nice things about JPEG 2000 is that it's easy to smooth the image - just download fewer bytes.

Is there a similar way to scale the image so that I can send the thumbnail using the bytes in the full size file, without resampling?

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No, to resize, you still have to read the original size, resize the swatch to the new size, and then re-compress.



You can write your file so that it has 2 sizes of layers, with very little relative increment and extraction of those layers.

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