Title :
Discrete Anamorphic Transform for Image Compression
Author :
Asghari, Mohammad H. ; Jalali, Bahram
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
To deal with the exponential increase of digital data, new compression technologies are needed for more efficient representation of information. We introduce a physics-based transform that enables image compression by increasing the spatial coherency. We also present the Stretched Modulation Distribution, a new density function that provides the recipe for the proposed image compression. Experimental results show pre-compression using our method can improve the performance of JPEG 2000 format.
Keywords :
data compression; discrete transforms; image coding; JPEG 2000 format; density function; digital data; discrete anamorphic transform; image compression; physics-based transform; stretched modulation distribution; Bandwidth; Brightness; Image coding; Kernel; PSNR; Transform coding; Transforms; Anamorphic transform; diffractive data compression; dispersive data compression; image compression; physics based data compression; space-bandwidth engineering; warped stretch transform;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2014.2319586
