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Abstract

THE MAIN CHARACTERISTICS OF A GOOD SPATIAL SAMPLE, RANDOM AND INDEPENDENT SAMPLING NO SPATIAL AUTOCORRELATION, SUFFICIENT SIZE, ARE REVIEWED. SURFACES CAN BE MEASURED ON IMAGES EITHER BY SYSTEMATIC MEASUREMENT OR BY SAMPLING. DIFFERENT TECHNIQUES CAN BE USED, SUCH AS MEASUREMENTS ALONG TRANSECTS, COUNT OF SAMPLING POINTS EITHER RANDOMLY OR SYSTEMATICALLY DISTRIBUTED OR ON THE BASIS OF A PREVIOUS STRATIFICATION. A METHOD IS GIVEN TO OBTAIN A SPECIFIED CONFIDENCE INTERVAL. ERROR AND PRECISION PROBLEMS ARE REVIEWED. FINALLY THE PRACTICAL PROCEDURE OF POINT SAMPLING IS DESCRIBED FOR SATELLITE IMAGES OR AERIAL PHOTOGRAPHY.

Additional information

Authors: BARTHOLOME E JRC-ISPRA, JRC-ISPRA
Bibliographic Reference: PAPER PRESENTED: AMELIORATION DES PROCEDURES D'ENQUETES AGRICOLES PAR LA TELEDETECTION, NAIMEY, NIGERIA, JUNE 15-19, 1987
Availability: Can be ordered online
Record Number: 1989126201100 / Last updated on: 1989-04-01
Category: PUBLICATION
Available languages: fr