METHOD FOR PREDICTING WET AND DRY CONDITION OF SOIL AND DEVICE FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for predicting wet and dry condition of soil and a device for the same which are capable of excellently obtaining an image of a field without being affected by cloud and the like, and accurately creating a wet and dry condition map of the soil without requiring an analysis of a humus content of the soil.;SOLUTION: A method for predicting wet and dry condition of soil comprises: taking visible images of a field immediately after a rainfall and in a dry period 42 and 44 by a helicopter 40 for aerial photographing; taking samples of soil 50 from several locations in the field and analyzing a volume moisture content 52 and vapor phase ratio 54 thereof; calculating a difference in light amount corrected color separation value data obtained by correcting light amount of color separation value data 72 for red, green and blue in the images at the locations where soil samples are taken; creating maps 76 and 78 between difference data 74 of the two images and the volume moisture content 52 as well as the vapor phase ratio 54 to obtain a regression formula; and obtaining a wet and dry condition map 82 of the entire field using the regression formula.;COPYRIGHT: (C)2012,JPO&INPIT