Quality assessment of data from CHRIS/PROBA

Current poster presents a student assignment for the CHRIS/PROBA image processing by ENVI GIS. Study Area: Thorney Island, Chichester harbour (UK): unique wetland environment, a place for rare bird colonies. Quality of CHRIS images is affected by two types of noises: vertical noise (vertical stripes; can be corrected by comparing values of neighbouring pixels) and horizontal noise (easy to detect and correct using the horizontal profile of each file. Correction of noises can be made through DIELMO 3D Methodology. PROBA (Project for On-Board Autonomy) and CHRIS (Compact High Resolution Imaging Spectrometer) image was taken with characteristics: 18 bands, 07/10/2004, 17m ground resolution. To obtain a good-quality natural-coloured image of wetlands a need: nadir-taken colour CHRIS image with bands combination of corresponding spectral channels was selected and processed. Comparing images taken at +55° dgr (47A2_41) and nadir images (479F_41) right Images taken at the nadir are of good quality, while those at different angles have defects: Images taken at +36° dgr (47A0_41), left and nadir images (479F_41) right. Images taken at +36° and-36° (CHRIS 47A0_41 and CHRIS 47A1_41) both have inverted direction. Several bands were tried, processed and visualized. Spectral bands assessed and visually compared. This is a student poster as a part of MSc studies, University of Southampton.