Hawai‘i Island Satellite / Aerial Imagery

Overview

How much memory is needed to cover the island (130 km * 150 km) with texture images?

Resolution Texture Size Memory Needed Notes
16 bit 24 bit 32 bit
~4m 32k x 32k 2 GB 3 GB 4 GB need some tiling/paging to support this
10m 13000 x 15000 371 Mb 558 Mb 744 Mb bought bad SPOT data at this resolution
20m 6500 x 7500 93 Mb 140 Mb 186 Mb  
25m 5200 x 6000 59.5 Mb 89.25 Mb 119 Mb bought good LS7 data at this resolution
~32m 4096 x 4096 32 Mb 48 Mb 64 Mb limit with a 64Mb graphics card

Satellite:

Aerial:

Air Survey Hawaii

Image Quality:

This is SPOT data, 20m color merged with 10m panchromatic,
resampled at ~15m/pixel:
This is NASA high-altitude aerial photography of the same
area at ~15m/pixel: