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Praca Dyplomowa - Photogrammetry and Remote Sensing - AGH

Praca Dyplomowa - Photogrammetry and Remote Sensing - AGH

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EXPERIMENT<br />

� Tripod<br />

For image recording tripod for the camera was always used, to reduce blur of applied long<br />

exposure time. Shutter time was also set for 0,5sec, to avoid camera movements <strong>and</strong> then blur<br />

while touching the camera.<br />

The best pictures were taken, with additional lights <strong>and</strong> without flash <strong>and</strong> these were chosen<br />

for processing. In PhotoModeler Scanner a few photos with dust were used as well, to<br />

compare the results. Figure 4.1 illustrates one of the photographs taken during image<br />

acquisition. It is possible to see that the photo is quite good; but it was not possible to avoid<br />

reflectiveness of shiny material <strong>and</strong> some pixels are “lost” (too bright, sometimes too dark).<br />

Additional control point around <strong>and</strong> on the sculpture were used for better bundle adjustment<br />

results. There was also scale bar to be able to scale the project. After all, a lot of images have<br />

been recorded <strong>and</strong> some of them may be found in folder: Canon\Photos including photographs<br />

for camera calibration.<br />

Figure 4.1 Photograph from image acquisition<br />

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