Title :
A study of a three-dimensional histogram using the NOAA AVHRR images
Author :
Kudoh, Jun-ichi ; Noguchi, Shoichi
Author_Institution :
Res. Center for Appl. Inf. Sci., Tohoku Univ., Japan
fDate :
9/1/1991 12:00:00 AM
Abstract :
The development of the NOAA satellite Advanced Very High Resolution Radiometer (AVHRR) three-dimensional analysis system, in which the problem of drawing a three-dimensional histogram on a two-dimensional CRT was encountered, is discussed. In this case there are two factors: one is the coordinate position given by the brightness level of the three image channels of NOAA AVHRR, the other is the frequency of the points within the images. To decide the semi-optimum value for displaying the processed three-dimensional histogram, the authors tried to relate the frequency and the total number of pixels. It was found that the standard deviation is reasonable. In the analysis using this method, the differences between major components of the images are displayed in the three-dimensional histogram, allowing the identification of features like sea, land, and clouds by a clustering process
Keywords :
computerised picture processing; geophysics computing; remote sensing; Advanced Very High Resolution Radiometer; NOAA AVHRR images; brightness level; clouds; clustering process; coordinate position; feature identification; frequency of the points; histogram display; land; pixels; remote sensing; sea; three-dimensional analysis system; three-dimensional histogram; two-dimensional CRT; Brightness; Cathode ray tubes; Clouds; Frequency; Histograms; Image analysis; Image processing; Multispectral imaging; Pixel; Radiometry; Satellite broadcasting; Three dimensional displays;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
