3 accepted papers
To efficiently compress raw camera images captured using a color filter array (CFA-sampled raw images), wavelet-based spectral-spatial transforms (WSSTs) that change a CFA-sampled raw image from an RGB color space into a decorrelated color space have been presented. This study introduces weighted WS…
We propose a perceptual encryption within JPEG compression (EWJ). Although some of the conventional EWJs have the `tun-ability,' which is a property of how many perceptual degradation levels can be provided with the single encryption technique, it is insufficient because either strong level of secur…
Directional block transforms (DBTs), such as discrete Fourier transforms, are basically less efficient for sparse image representation than directional overlapped transforms, such as curvelet and contourlet, but have advantages in practical computation, such as less computational cost, less amount o…