International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 174 - Number 20 |
Year of Publication: 2021 |
Authors: Sanchita Rani Das, Md. Al Mamun, Md. Ali Hossain |
10.5120/ijca2021921102 |
Sanchita Rani Das, Md. Al Mamun, Md. Ali Hossain . Temporal Gradient based Satellite Image Compression. International Journal of Computer Applications. 174, 20 ( Feb 2021), 38-41. DOI=10.5120/ijca2021921102
Now a day’s tremendous amount of earth observing data or images is downloaded in order to accommodate in variety of geographical and environmental applications like change detection, weather forecasting, climate change, disaster management etc. The recent advancement in spatial, spectral and temporal resolution of satellite images has make it possible to use the images in these vital and world-wide challenging applications. Due to limited transmission rate, remote sensed satellite images needs to be compressed before being delivered to the user. While individual images can be processed by considering spatial and spectral redundancies, a communication system for satellite images can also consider the temporal correlation between images of same place for two different time. In this paper a gradient-based temporal compression technique has been proposed to approximate the image using a reference image of previous time, which is already available. The residual image is transmitted where the proposed rate defeats the sate of art compression technology like JPEG.