Dem Evaluation Generated from HRS SPOT5 Data (original) (raw)

The purpose of this project is to test High Resolution Stereoscopic (HRS) data of SPOT5. This project is done in the framework of the “HRS study Team ” international test, supported by ISPRS-CNES. The Digital Elevation Model (DEM) was derived from the HRS data and was evaluated by using a 3D reference data set. The study site for HRS data is located in Manosque, France. It is a countryside landscape, with fields and villages. The height relief is medium and in some areas considerably intensive. The HRS data was acquired on 14th August 2002. A number of different DEM generation experiments were carried out, in order to examine the influence of different processing parameters on the final accuracy of the DEM. Thus: 1) The same date acquisition of the stereo-pair reduces the radiometric variations of images; nevertheless, the fact that the images are captured by two different sensors has led us to apply a histogram matching technique for image pre-processing, in some experiments. 2) Th...

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