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High Resolution 1:10,000 scale Mapping Strategy of Multi ... - NDMA

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Generation<br />

0.5 m<br />

1 m<br />

2.5 m<br />

5m and<br />

Above<br />

LiDAR alone will<br />

generate DEM’s<br />

� Geoeye and<br />

Worldview<br />

(0.5m)<br />

� Geoeye,<br />

Worldview<br />

and Ikonos<br />

(1m and<br />

below)<br />

� Geoeye,<br />

Worldview,<br />

Ikonos and<br />

Cartosat 1<br />

(2.5m and<br />

below)<br />

� (Many<br />

Satellites)<br />

List is attached in<br />

annexure<br />

� (1:30,<strong>000</strong>)<br />

� (1:50,<strong>000</strong><br />

andAbove)<br />

Table 9.1: Comparison between Lidar, <strong>High</strong>-resolution stereo Satellite image<br />

and Aerial photo<br />

COMPARISON OF ACCURACY OF IMAGING<br />

The most significant plus points <strong>of</strong> such datasets includes<br />

� Less numbers <strong>of</strong> images compared with aerial photos (minimizes<br />

triangulation time)<br />

� The flying restriction issues<br />

84

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