image information

hi i wish to upload some picture i take. what is saved in the image information properties file. like in windows you can see date taken and stuff.

Take a look at this, it's what information that your image will have once it is uuploaded, as for whether it keeps the Image type, I ahve nooo idea

http://img27.imageshack.us/i/imagedetails.jpg/

I don't know definitively what happens here. If you can somehow get Chosen Few's attention to this (perhaps by cross-posting to the Texturing Tips subform, ), you'd get somebody who actually knows what he's talking about. My *hunch* is that none of the metadata in any of the supported file formats is preserved at upload, with whatever metadata JPEG2000 supports being filled by information about the upload process itself (e.g., the "acquired date" of the asset).* As Agatha's picture shows, there is a Description field for image assets that is filled-in for Snapshots, but I've not seen that automatically populated for uploaded textures.

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* [Edit: Now that I think about it, that's almost certainly wrong; that "Acquired" field is surely just a property of the asset, not embedded in the image format itself.]

Any and all metadata associated with the original image file, including any EXIF data, is stripped from the image upon upload, at least as far as the viewer is concerned, as a consequence of conversion to JPEG2000. If I were to take a photo with embedded metadata, upload it to SL as a full-perm texture, give it to you, and you downloaded it to your local drive, all the metadata would be gone.

Well does anyone know of software that can read metadata from jpeg 2000 images? Would the metadata look like XML in a hex editor? If jpeg 2000's metadata looks like xml, then I haven't found any yet

It appears that a whole range of metadata formats have been used for embedding in JPEG2000, according to http://www.jpeg.org/jpeg2000/metadata.html (including, amazingly enough, Dublin Core). I'd still bet that none is populated at upload, and unless it was preserved at download, we'd never know anyway.

The "Acquired" field is a property of the inventory item actually, not of the asset.

J2C embedded information and extraction:

http://wiki.secondlife.com/wiki/Texture_meta-data

The agent id, time stamp, and average color/alpha values would probably be the most useful information from what is available.

If you want to preserve any additional information within a texture, it needs to be done through strong watermarking.

Oh this is a very good question, I didnt think of this info. Thank You.