Title :
Graph-cut-based compression algorithm for compressed-sensed image acquisition
Author :
Alaydin, Julide Gulen ; Gulen, Seden Hazal ; Trocan, Maria ; Toreyin, B. Ugur
Author_Institution :
Cankaya Univ., Ankara, Turkey
Abstract :
The purpose of the paper is to find the best quantizer allocation for compressed-sensed acquired images, by using a graph-cut quantizer allocation method. The compressed sensed acquisition is realized in a block-based manner, using a random projection matrix, and on the obtained block measurements a graph-cut-based quantizer allocation method is applied, in order to further reduce the bitrate associated to the measurements. Finally, the quantized measurements are reconstructed using a Smooth Projected Landweber recovery method. The proposed compression method for compressed sensed acquisition shows better results when compared to JPEG2000.
Keywords :
compressed sensing; quantisation (signal); compressed sensed acquisition; compressed-sensed image acquisition; graph-cut-based compression algorithm; graph-cut-based quantizer allocation method; random projection matrix; smooth projected Landweber recovery method; Compressed sensing; Image coding; Image reconstruction; Minimization; Quantization (signal); Transform coding; Transforms;
Conference_Titel :
Signal Processing and Communications Applications Conference (SIU), 2014 22nd
Conference_Location :
Trabzon
DOI :
10.1109/SIU.2014.6830726