Spatial Resolution

Spatial resolution is the projection of a detector element or a slit onto the ground. In other words, scanner's spatial resolution is the ground segment sensed at any instant. It is also called ground resolution element (GRE).

The spatial resolution at which data are acquired has two effects - the ability to identify various features and quantify their extent. The former one relates to the classification accuracy and the later to the ability to accurately make mensuration. Images where only large features are visible are said to have coarse or low resolution. In fine resolution images, small objects can be detected.

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