Interesting that it’s the 1997 SE artwork but not the Drew Struzan painted version. Those are collaged photos (except they used an alternate shot of Leia from ESB for some reason).
Yeah they sort of did that for most of the movies around that time. They would roughly try to capture the essence of the Struzan artwork by using actual images. Sometimes the head positions would be different, but they tried to get the gist of it.
TPM poster: http://cdn.shopify.com/s/files/1/0630/8509/products/flat2228starw_grande.jpg?v=1469549959
TPM VHS: https://i.pinimg.com/736x/ed/8d/e2/ed8de234bc71ebe921c0d6d8c8d8a475--vhs-movie-vhs-tapes.jpg
ROTS poster: http://www.thecine.es/1784-2133-large_liquid/cuadro-star-wars-episodio-iii-la-venganza-de-los-sith-cartel.jpg
ROTS DVD: https://images-na.ssl-images-amazon.com/images/I/51RHXMVH9YL.jpg
ANH SE poster: https://imgix.ranker.com/user_node_img/50048/1000953176/original/a-new-hope-special-edition-poster-photo-u1?w=650&q=50&fm=jpg&fit=crop&crop=faces
ANH SE VHS from 2000: https://vignette.wikia.nocookie.net/starwars/images/8/88/Ep4.png/revision/latest?cb=20060713202042
TESB SE poster: http://www.screenused.com/images/posters/14275_1.jpg
TESB SE VHS from 2000: http://swonvideo.com/vhs/imageslarge/vtrilogyboxuk2000esbfront.jpg
ROTJ SE poster: http://www.screenused.com/images/posters/14274_1.jpg
ROTJ SE VHS from 2000: http://vhscollector.com/sites/default/files/vhscovers/box_front/star-wars-vi-return-jedi-vhs-1-28433.jpg
AOTC was the only one whose VHS/DVD cover did not even look close to the theatrical poster. Then there was the 2006 GOUT release, where they followed a similar philosophy, except that the image collages were made to look like the original theatrical posters; and their back covers had the actual theatrical posters for comparison.