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Lossy compression is a way of compressing a files size by deleting data.
Thus, Lossy compression degrades the image. Furthermore, the loss
happens each time you save the file, so the loss is cumulative.
For an image, such as a photo, the data lost by JPEG's lossy compression
is not noticeable. For an image, such as a screen capture, which
features sharp transitions and relatively few colors, etc., I think
Lossy compression is noticeable.
Non-lossy compression is used in things like PNG, where the compression
algorithm does not discard data from the file.
>1) Lack of understanding what LOSSY
> compression is. 2) Despite LOSSY compression, it works.
For those of us still on the learning curve about all these graphics
concerns, especially w/ FM, would you be willing to explain/offer a
brief
tuturial about LOSSY compression?
And if you think it would clutter the list, you can just reply to me
offlist.
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