| | 1 | = Choosing an appropriate pixel size = |
| | 2 | |
| | 3 | == Quick reckoner == |
| | 4 | || '''Altitude (ft)''' || '''Pixel size (m)''' || |
| | 5 | || < 3000 ft || 1m || |
| | 6 | || 3000 - 4000 ft || 2m || |
| | 7 | || 4000 - 6000 ft || 2.5m || |
| | 8 | || 6000 - 8000 ft || 4m || |
| | 9 | || > 8000 ft || 5m || |
| | 10 | |
| | 11 | Note that you should look at the azgcorr output to get a good idea of what your actual pixel sizes are, e.g.: |
| | 12 | {{{ |
| | 13 | ... |
| | 14 | |
| | 15 | Pixel spacing stats... along line... |
| | 16 | centre min: 4.45 max: 5.04 ave: 4.64 |
| | 17 | port min: 0.35 max: 32.31 ave: 6.48 |
| | 18 | starboard min: 0.56 max: 35.08 ave: 6.77 |
| | 19 | across line centre (pix 238): 4.11 |
| | 20 | }}} |
| | 21 | |
| | 22 | |
| | 23 | --------- |
| | 24 | Add notes on: |
| | 25 | * -g interpolation |
| | 26 | * different sensor types and characteristics |
| | 27 | * specim non-square pixels (along track) |