Even though substantial progress has been made in super resolution research, many issues regarding robust sub-pixel estimation and fast implementation of feature preserving restoration still exist. To obtain more reliable sub-pixel information, we proposed to correct mis-aligned sub-pixels by motion vector (MV) processing based on hierarchical block partition and weighted vector median filterin...

Nomenclature SF a , SFx a , SF y a , SFz a = specific force acceleration vector (sensed by accelerometers) and components in frame B B = sensor (body) coordinate frame aligned with strapdown inertial sensor axes 1 m B  = frame B orientation at computer cycle 1 m  () Bt = frame B orientation at time t k r c = combination, k elements selected from a set of r elements without regard to the order...

In this paper, we propose a fast multi-resolution block matching algorithm with three resolution levels (upper, middle, and lower levels) for multiple-frame motion estimation (MFME). The main concept of the algorithm is to perform a fast search while maintaining a PSNR performance similar to a full search block matching algorithm (FSBMA). The algorithm combines motion vector prediction using th...

In this paper, we present a family of compression methods based on differential vector quantization (DVQ) for encoding Mel frequency cepstral coefficients (MFCC) in distributed speech recognition (DSR) applications. The proposed techniques benefit from the existence of temporal correlation across consecutive MFCC frames as well as the presence of intra-frame redundancy. We present DVQ schemes b...

Storaging or transmission of speech signals at very low bit rate is a hot area in the field of speech processing. We used stochastic inter-frame interpolators and vector quantization (VQ) as a new method for developing a high quality 1200 BPS speech vocoder. The objective and subjecgtive test results show that performance of the new vocoder is compairable with 4800 BPS standard vocoders (as CELP).

We analyze the effects of spacetime topology and angular velocity rotating frame on dynamics a relativistic vector boson oscillator (VBO). To determine these energy VBO we solve corresponding equation in 2+1 dimensional cosmic string-induced background. obtain an exact spectrum, which depends deficit parameter show that each level cannot be same couples with spin VBO. Furthermore, have obtained...