| 摘要 |
An object of the invention is to provide a method and an apparatus for producing land-surface image data, which can correct, with relatively high accuracy, cloud image data included in satellite image data into land-surface image data that would emerge in the absence of a cloud. Geostationary satellite image data 1 of a predetermined time at a production standard date is obtained, and a determination whether each pixel is a pixel reflecting a land surface 4 or a pixel reflecting a cloud 5 is made to set partial image data 6 and a missing region 7. Then, processing is repeated by sequentially adding another imaging date and time according to a predetermined priority until the missing region 7 is filled up with the pixel determined to be the pixel reflecting the land surface 4, thereby producing interpolated image data 9 to produce the land-surface image data. The pixel is determined to be the pixel reflecting the land surface 4 from a pixel value in the another imaging date and time that is determined to be data having a close temporal relevance in a relationship between a solar position and the predetermined time of the production standard date. |
