Question about UFO format - lossy/lossless?

[DavidGreensmith]

I've done some searches through the ULEAD documentation, these boards and Google trying to figure out whether UFO is lossy (e.g. JPG) or lossless (e.g. PNG, BMP).

The only explanations I can find say that the base objects are stored separately, but not whether raster data are compressed and if so whether they are compressed using lossy or lossless algorithms.

The reason I ask is that I want to ensure that the degradation I experience on the image is minimised. When using Paintshop Pro, I would save as a bitmap whilst editing and then finalise as JPG. I've been saving my PI projects as UFOs, but want to know whether I'm losing information (as you would with successive JPG saves).

Does anyone here know?

Thanks,

David

[Bobm03]

~~~ I've been saving my PI projects as UFOs, but want to know whether I'm losing information (as you would with successive JPG saves).

Does anyone here know?

Thanks,

David

When you save your UFO file, open the Options dialog, you have three compression choices: None, RLE (a form of lossless compression) and JPG. Use JPG only if you want to make a smaller file. Note that in the "Advanced" button, there is a choice for saving either the vector data or the image data as you wish.

So, select "None" and you're not going to loose any information.

[heinz-oz]

I second that

[DavidGreensmith]

Thanks for the information. RLE seems to be set by default, which is fine with me because it's lossless.

David.