HMK - Höjddata, 2012 års arbetsdokument - Lantmäteriet
HMK - Höjddata, 2012 års arbetsdokument - Lantmäteriet
HMK - Höjddata, 2012 års arbetsdokument - Lantmäteriet
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Innehållsförteckning<br />
1 <strong>Höjddata</strong> ............................................................. 5<br />
1.1 Om höjddata ........................................................................... 5<br />
1.2 Vektordata ............................................................................... 5<br />
1.2.1 Punktmoln ............................................................................... 5<br />
1.2.2 Punkthöjder ............................................................................ 6<br />
1.2.3 Brytlinjer .................................................................................. 7<br />
1.2.4 Höjdkurvor ............................................................................. 8<br />
1.3 TIN ......................................................................................... 10<br />
1.4 Raster ..................................................................................... 11<br />
1.4.1 Upplösning och interpolering ............................................ 13<br />
1.4.2 Att tänka på kring rasterdata ............................................. 14<br />
2 Höjdmodeller ..................................................... 15<br />
2.1 Markmodell .......................................................................... 15<br />
2.2 Ytmodell ................................................................................ 16<br />
2.3 Andra höjdmodeller ............................................................ 16<br />
2.3.1 Modell för ortorektifiering .................................................. 16<br />
2.3.2 Objekthöjdsmodell ............................................................... 17<br />
2.3.3 Differensmodell .................................................................... 17<br />
3 Insamlingstekniker ........................................... 19<br />
3.1 Luftburen laserskanning ..................................................... 19<br />
3.2 Luftburen fotografering ...................................................... 19<br />
3.3 Fordonsburen insamling ..................................................... 19<br />
3.4 Geodetisk mätning ............................................................... 19<br />
3.5 Luftburen radar .................................................................... 20<br />
3.6 Digitalisering ........................................................................ 20<br />
4 Ajourhållning ..................................................... 21<br />
5 Kvalitetskontroll ................................................ 22<br />
6 Produkter .......................................................... 23<br />
6.1 Terränganalys ....................................................................... 23<br />
6.2 Övriga produkter ................................................................. 23<br />
7 Visualisering...................................................... 25<br />
8 Lagring .............................................................. 26<br />
Arbetsdokument, december <strong>2012</strong> 2 (29)