IVUE explained

Live Picture multi-view
Extension:	.ivue
Type Code:	'IVUE'
Genre:	Raster graphics^[1]
Extended To:	FlashPix

The IVUE file format is an image format used by Live Picture, a discontinued image application. It chunks an image into tiles and stores multiple quarter-downscaled versions of one image. It is supported by Adobe Photoshop 3.0 through 7.0.^[2] The image format is extended to FlashPix.

The format is discussed in European patent EP0691011A1, or US Patent US5790708A. In addition to viewing, it is intended to allow users to edit on a lower-resolution version (to save data), while applying the edit operations to the full-resolution version.^[3]

Notes and References

1. PC Mag. PC Magazine: The Independent Guide to IBM-Standard Personal Computing. 13 September 1994. Vol. 13, N° 15. 0888-8507.
2. Book: Evening, Martin. Adobe Photoshop 7.0 for Photographers: A Professional Image Editor's Guide to the Creative Use of Photoshop for the Macintosh and PC. Taylor & Francis. 2 May 2013. 9781136092626.
3. Web site: Method and system for image processing . Google Patent . en . 25 March 1994.