TY - GEN
T1 - Image data compression and its effects on stereo height extraction processing
AU - Parkes, Stephen Maxwell
AU - Zemerly, Mohamed Jamal Ahmed
AU - Muller, Jan Peter
PY - 1991
Y1 - 1991
N2 - The effect of data compression on high-resolution optical images and on the digital elevation model (DEM) product that can be extracted from stereoscopic image pairs is examined. A stereoscopic pair of SPOT images was compressed and decompressed by three different data compression methods. The degradation in image quality was measured. The reconstructed image pairs were then processed by a stereo height extraction system and the corresponding DEMs produced. The DEMs from the original image pair and from the compressed/decompressed image pairs were all compared to a reference DEM, and the level of degradation in the DEM was assessed. The results were encouraging, with very little DEM degradation being induced for a 4:1 compression ratio.
AB - The effect of data compression on high-resolution optical images and on the digital elevation model (DEM) product that can be extracted from stereoscopic image pairs is examined. A stereoscopic pair of SPOT images was compressed and decompressed by three different data compression methods. The degradation in image quality was measured. The reconstructed image pairs were then processed by a stereo height extraction system and the corresponding DEMs produced. The DEMs from the original image pair and from the compressed/decompressed image pairs were all compared to a reference DEM, and the level of degradation in the DEM was assessed. The results were encouraging, with very little DEM degradation being induced for a 4:1 compression ratio.
UR - http://www.scopus.com/inward/record.url?scp=0026406556&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0026406556
SN - 0879426756
T3 - Digest - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 1449
EP - 1452
BT - Digest - International Geoscience and Remote Sensing Symposium (IGARSS)
A2 - Anon, null
T2 - 1991 International Geoscience and Remote Sensing Symposium - IGARSS'91
Y2 - 3 June 1991 through 6 June 1991
ER -