We have picked out six that have never been on display. You can see where they were found on the HS2 route map below - then scroll further down to see the objects and read about their history.
Uniform regions (solid backgrounds, smooth gradients) get stored as large blocks. Detailed regions (edges, textures) get subdivided into smaller blocks. You end up with a compressed representation that preserves detail where it exists and simplifies where it can.
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turbulent economic times, the branch became responsible for tracking the balance
"Secure digital transformation is only successful if information security is considered from the beginning in the development of mobile products," BSI president Claudia Plattner is quoted as saying in Apple's press release. "Expanding on BSI's rigorous audit of iOS and iPadOS platform and device security for use in classified German information environments, we are pleased to confirm the compliance under NATO nations' assurance requirements."