Multimedia Image Data Analysis Based on KNN Algorithm

Table 2

Characteristic description of CHRIS products.

Space adopted interval (m)	Nadir point 18
Image area (km ∗ km)	14 × 14
Number of images/piece	5 (different angle)
Image size (km)	13 × 13 (768 × 748 pixels)
Each image size (mbit)	131
Pixel format	BSQ
Spectral range (m)	400∼1050
Data unit	microWatts/mm/m 2/str
Number of spectral bands	18 bands with a spatial resolution of 17 m, and 62 bands with a spatial resolution of 34 m
Spectral resolution	1.3 nm@410 nm to 12 nm@1050 nm
Signal-to-noise ratio	200