Matching of Airphotos with TM Images and Precision Testing of Crop Area Estimation by Means of TM Using Airphotos
航空影像与TM影像的配准及用航空影像对TM进行作物估产方法的精度检验

This paper presents a new approach called spacial frequency spectrum- correlation for the matching of remotely sensed images of different dissolution byevaluating the correlativity of low pass filtered spectrum of higher dissolution imageand that of lower dissolution image. When the coefficient is the maximum value,it is considered the best position for matching.In this paper the precision of esti-mated winter wheat area of TM image by several different classification methodsis tested bv 1:10000 B/W airphoto,the result implies that the disintegration of mi-xed pixel is of the highest estimation precision.