TITLE:
Full Image Inference Conditionally upon Available Pieces Transmitted into Limited Resources Context
AUTHORS:
Rodrigue Saoungoumi-Sourpele, Jean Michel Nlong, David Jaurès Fotsa-Mbogne, Jean-Robert Kala Kamdjoug, Laurent Bitjoka
KEYWORDS:
Progressive Image Transmission, Bitplane Coding, Kalman Filtering, Fast Reconstruction
JOURNAL NAME:
Journal of Signal and Information Processing,
Vol.12 No.3,
July
6,
2021
ABSTRACT: In a context marked by the proliferation of
smartphones and multimedia applications, the processing and transmission of
images have become a real problem. Image compression is the
first approach to address this problem, it nevertheless suffers from its
inability to adapt to the dynamics of limited environments, consisting mainly
of mobile equipment and wireless networks. In this work, we propose a
stochastic model to gradually estimate an image upon information on its pixels that are transmitted progressively. We
consider this transmission as a dynamical process, where the sender pushes the data in decreasing significance order. In order to adapt to network
conditions and performances, instead of truncating the pixels, we suggest a new
method called Fast Reconstruction Method by Kalman Filtering (FRM-KF)
consisting of recursive inference of the not yet received layers belonging to a
sequence of bitplanes. After empirical analysis, we estimate parameters of our model which is a linear
discrete Kalman Filter. We assume the initial law of information to be the
uniform distribution on the set [0, 255] corresponding to the range of gray
levels. The performances of FRM-KF method have been evaluated in terms of the ratios in the quality of data image/size
sent and in the quality of image/time required for treatment. A high quality was reached faster with
relatively small data (less than 10% of image data is needed to obtain up to
the sixth-quality image). The time for treatment also decreases faster with number of received layers. However, we found
that the time of image treatment might be large starting from a image resolution of 1024 * 1024. Hence, we
recommend FRM-KF method for resolutions
less or equal to 512 * 512. A statistical comparative analysis reveals that
FRM-KF is competitive and suitable to be implemented on limited resource environments.