On 5 Apr 2010, at 18:39, Jim wrote:
Hi there, First a bit of background: I'm building an app that maintains a number of images. Once the images are uploaded I use the images service to scale the images down so I can present my users with a thumbnail later. The problem is that the image quality after scaling is quite bad since the edges of artifacts in the images are not at all anti aliased. This is a problem because I didn't put a lot of effort into creating nice looking images just for them to look bad in their scaled down version. Sure I could upload thumbnails as well, but I'll have a fairly large volume of images so this isn't an ideal situation. I can't see a way to apply anti-aliasing or manipulate the image quality anywhere in the Images API and since the java 2d API isn't on the App Engine white-list I couldn't figure out a way to do this. So, I ask you, Dear App Engine community: Has anyone figured out how to do this (other than uploading a separate thumbnail). Does anyone know if the App Engine Java API will ever offer this sort of functionality?
Most image editing software reduces photos by first doing a bur and then a scale. I wonder if you could somehow simulate a blur by composing the same image on itself several times a few pixels off with varying transparency before reducing? Might use a lot of CPU though.
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