picture Blocks

In the aerial image measurement, a picture block is a covering sequence of aerial or satellite images, which are assembled into an approximately rectangular bandage. The individual images are generated by means of a so-called image flight meandering or strip-shaped or by means of suitable image strips of satellite tracks. Image grouping for a block adjustment. Three series of aerial images with approximately 60% longitudinal and 25% transverse coverage are computationally assembled into a picture block by way of control points.

Image blocks are an extension of the stereo image pairs, as they were recorded earlier. The corresponding evaluation technique is called Bundleblockausgleichung. In this case, identical image points in neighboring images are selected (manually or automatically) and the nuclear beams directed towards them by the camera are cut to the surface on the surface of the earth. With a certain number of passpoints at the block edges, the images can be processed into digital terrain models or topographical maps.

:

wiki