Title
Lossy Depth Image Compression using Greedy Rate-Distortion Slope Optimization
Abstract
We introduce a method to create lossy versions of one image, either by successively merging the constant regions of the original image, or by iteratively splitting the regions from a created lossy image using horizontal or vertical line segments. Merging and split decisions are greedily taken, according to the best slope towards next point in the rate-distortion curve. For each created lossy image, the region contours and the optimal depth values can be entropy coded in three ways: with a new algorithm, or with two existing lossless coding algorithms. The obtained results compare favorably with the existing lossy methods.
Year
DOI
Venue
2013
10.1109/LSP.2013.2280495
Signal Processing Letters, IEEE
Keywords
Field
DocType
data compression,entropy codes,image coding,entropy code,greedy rate-distortion slope optimization,horizontal line segment,image constant region merging,image lossy version,iterative region splitting,lossless coding algorithm,lossy depth image compression,optimal depth values,rate-distortion curve,region contours,vertical line segment,Depth image,image coding,lossy depth compression,region merging,region splitting,sequence of lossy images
Line segment,Computer vision,Mathematical optimization,Lossy compression,Color Cell Compression,Artificial intelligence,Data compression,Fractal transform,Image compression,Mathematics,Lossless compression,Context-adaptive binary arithmetic coding
Journal
Volume
Issue
ISSN
20
11
1070-9908
Citations 
PageRank 
References 
9
0.55
10
Authors
2
Name
Order
Citations
PageRank
I. Schiopu1378.04
Ioan Tabus227638.23