Yeah, I could extract those textures. The resolution of them doesn't seem great though. They average at around 500x700. I don't think Namco has been doing a good job archiving old stuff. Some of these pictures have very obvious JPEG compression. So I guess they couldn't find better than low-res JPEGs for some of the artwork within their own archives.
Actually, since it was pretty straightforward to extract and upload, here's all the artwork from the museum mode:
https://mega.nz/#!hRsG1YqJ!5FiLJYk4ruGuN9flVfr_Y7yRhAcGdaeK-7p6julwU1k