Sample data provided here are 1) those of HRIT and LRIT images both of which are to be disseminated from MTSAT-1R, and 2) those of HiRID images which are compatible with S-VISSR image of GMS-5.
The observation data obtained with the MTSAT series are made into
A "compressed image data" are made from the above
1) compressed "raw data" portion and
2) its file header. JPEG algorithm (lossless or lossy compression) is used for above compression of raw data.
For explanation of file headers of the sample image data, please refer to HRIT_LRIT_Header_Information.PDF or HRIT_LRIT_Header_Information.xls.
After receiving the image data, i.e. "packet sized data", first,
you need to decode it to obtain "compressed image data."
Then, you need to decompress the imagery portion of the above "compressed image data" with JPEG algorithm to obtain "non-compressed image data."
These sample data can be used for verifying functions, such as decompression of "compressed image data", of concerned software/hardware of a receiving equipment. All sample data are made from infrared image observed with GMS-5. Please note that "compressed image data" made by lossy compression cannot be decompressed to original data completely.