Title :
Foveated image formation through compressive sensing
Author :
Larcom, Ronald ; Coffman, Thayne R.
Author_Institution :
21st Century Technol., Austin, TX, USA
Abstract :
We describe two methods by which foveated (variable resolution) images can be created using the techniques of compressive sensing (CS). Foveated sampling (FS) combines a linear shift-variant foveation filter with the CS measurement operator. Foveated sampling and reconstruction (FSR) combines the foveation filter with the CS measurement operator and also with the sparse signal estimation algorithm used to reconstruct images. Both methods are shown to provide accurate reconstruction of foveated images at much higher compression levels than uniform resolution CS.
Keywords :
CMOS image sensors; Image coding; Image reconstruction; Image sampling; Interpolation; Kernel; Least squares methods; Signal processing; Signal sampling; Spline; Stagewise Orthogonal Matching Pursuit; compressed sensing; foveation; human visual system; image formation;
Conference_Titel :
Image Analysis & Interpretation (SSIAI), 2010 IEEE Southwest Symposium on
Conference_Location :
Austin, TX, USA
Print_ISBN :
978-1-4244-7801-9
DOI :
10.1109/SSIAI.2010.5483896