In the mid-1980's, wavelet theory was developed in applied mathematics [1, 2, 3]. Soon, subband coding [4], which has been a very active research area for image and video compression, was identi ed as wavelet's discrete cousin. Furthermore, a fundamental insight into the structure of subband lters was developed from wavelet theory that led to a more productive approach to designing the lters [1...

A fault-tolerant embedded SPMD architecture to support a pyramidal Quad-Tree motion/disparity estimation algorithm for stereoscopic image processing is proposed in this paper. The fault tolerance is obtained by using spares only for the image quality bottleneck modules (which are 6 on 90 modules) and by data derouting. Given the structure of the architecture that permits error confinement, the ...

In this paper, the morphology of chemically etched silicon with various concentration  is reported. The surface of Silicon (100) has pyramidal structures which can be used for anti-reflection applications in solar cells. Pyramidal structures can capture incident sun light therefore can enhance the efficiency of silicon solar cells. The structure of silicon pyramid was studied using scanni...

The bony orbit surrounding the eye is pyramidal with a rectangular base. The orbital volume (OV) of an adult is approximately 30 mm3 [1]. However, measurement of OV can be inconsistent due to the complicated anatomical structure of the bony orbit including the irregular inner border, holes and fissures. Computed tomography (CT) provides excellent image quality of bony landmarks making it a popu...

We present a new scalable compression technique dealing simultaneously with both lossy and lossless image coding. An original DPCM scheme with refined context is introduced through a pyramidal decomposition adapted to the LAR (Locally Adaptive Resolution) method, which becomes by this way fully progressive. An implicit context modeling of the prediction errors, due to the low resolution image r...

A nonexpansive pyramidal decomposition is proposed for low-complexity image coding. The image is decomposed through a nonlinear filterbank into low- and highpass signals and the recursion of the filterbank over the lowpass signal generates a pyramid resembling that of the octave wavelet transform. The structure itself guarantees perfect reconstruction and we have chosen nonlinear filters for pe...