Page 484 - Green - Maritime Archaeology: A Technical Handbook. 2nd ed

Index
463
overview, 167–168 rectification, 177 tilt correction, 176
phototriangulation
PhotoModeler cameras, 190–193 PhotoModeler overview, 186–190
site recording, 164 small-site survey
with grid frames, 166–167
overview, 165–166 stereophotogrammetry
accuracy, 197–198, 200 overview, 193–195 results, 195–197 Rhinoceros, 201–202
stereophotography
optical alignment, 185–186 overview, 182, 184–185
Photographic angle measurement alternative techniques, 38 double theodolite, 40
methods, 38
resectioning with overlay, 39f schematic diagram, 38f
theodolite and distance measuring
system, 41 theodolite-based system, 40
Photography
aerial, in site research, 19 artifact, see Artifact photography field, see Field photography general field, overview, 225–226 stereophotography
accuracy, 197–198, 200 optical alignment, 185–186 overview, 182, 184–185 Rhinoceros, 201–202
technical field, see Technical field photography
underwater, see General underwater photography
PhotoModeler
amphora survey, 208–209 amphora tags, 188f
data results, 154
land, 153
land photo tower, 146f
and other techniques, 145–146 overview, 155–156
photo tower perspective view,
156f
in phototriangulation cameras, 190–193 overview, 186–190
rigid frame measurement, 199t stereophotographic accuracy, 197–198, 200 stereophotography data processing,
196–197 underwater, 153
underwater photo tower, 147f Photomosaics
computer-based applications, 181–182 control, 169
grid frame control, 171–172
grid line control, 169–171
laying up, 177–180f network control, 172, 176 overview, 167–168 Pattaya wreck site, 168f rectification, 177
tilt correction, 176
Photo resectioning, with overlay, 39f Photo tower
bipod example, 175f
camera lens calibration, 174f
HMS Pandora wreck site, 173f
James Matthews wreck site, 183f PhotoModeler land photo, 146f PhotoModeler perspective view, 156f PhotoModeler underwater, 147f
Santo Antonio de Tanna wreck site, 183f underwater camera bar, 224f
Photo transits, in operation, 26f Phototriangulation
PhotoModeler cameras, 190–193
PhotoModeler overview, 186–190 Pixilation, example, 205f
Plastic explosives, in excavation, 267 PLSM Aqua Metre, overview, 132 Pooling effect, in general underwater
photography, 230
Port Royal, historical material, 351 Position dilution of precision, 46 Position error, Site Surveyor, 123–124 Position fixing
double theodolite system, 40
electronic systems, 41
general considerations, 24
Global Positioning System, 43–50 photographic angle measurement, 38–40 radar, 42–43
sextant survey, 34–37