In many applications of dynamic MR imaging, only a portion of the field-of-view (FOV) exhibits considerable variations in time. In such cases, a prior knowledge of the static part of the image allows a partial-FOV reconstruction of the dynamic section using only a fraction of the raw data. This method of reconstruction generally results in higher temporal resolution, because the scan time for p...

This paper presents a memory efficient, high throughput parallel lifting based running three dimensional discrete wavelet transform (3-D DWT) architecture. 3-D DWT is constructed by combining the two spatial and four temporal processors. Spatial processor (SP) apply the two dimensional DWT on a frame, using lifting based 9/7 filter bank through the row rocessor (RP) in row direction and then ap...

Neurons throughout the mammalian central auditory pathway respond selectively to stimulus frequency and amplitude, and some are also selective for stimulus duration. First found in the auditory midbrain or inferior colliculus (IC), these duration-tuned neurons (DTNs) provide a potential neural mechanism for encoding temporal features of sound. In this study, we investigated how having an additi...

This paper analyzes the application of methods developed in automatic speech recognition (ASR) to better understand neural activity measured with electrocorticography (ECoG) during the presentation of speech. ECoG data is collected from temporal cortex in two subjects listening to a matrix sentence test. We investigate the relation of ECoG signals and acoustic speech that has been processed wit...

Glaucoma reportedly affects motion perception. As an initial step in characterizing glaucoma-induced changes in the motion system, we determined the range of temporal frequencies that the motion system could process. A noise-masking paradigm was used to measure contrast energy thresholds of 26 glaucoma patients at various stages of the disease and 16 age-similar subjects with normal vision. Usi...

In many types of 3D cameras, The Time-of-Flight (TOF) cameras have the advantages of simplicity for use and lower price for general public. The TOF cameras can obtain depth maps at video speed. However, the TOF cameras suffer from low resolution and high random noise. In this paper, we propose methods to reduce the random noise in depth maps captured by the TOF cameras. For each point in the no...

A 100 100 pixel analog very large scale integration retina is proposed to extract the magnitude and direction of spatial gradients contained in sensed images. The retina implements in a massively parallel fashion, at pixel level, an algorithm based on the concept of steerable filters to compute the gradients. An output rate of up to 1000 frames per second is achieved in a standard CMOS 0.5 m pr...

Augmented Reality uses see-through head-mounted displays to superimpose synthetically generated information on a three-dimensional scene. Information is rendered in alignment with physical objects to enhance the user’s ability to perceive and interact with the world. A significant technical challenge related to Augmented Reality is determining the transformation that will correctly align the sy...

The potential of time reversal processing for room acoustics has been extensively investigated in the companion of this paper [J. Acoust. Soc. Am. 113(3), 1533-1543 (2003)]. In particular, a simple implementation of a loudspeaker time reversal antenna able to take advantage of the multiple reflections in reverberating rooms demonstrates its potential for audible range acoustics while improving ...

This paper proposes a detector for spatio-temporal interest points. Interest point detection is a common technique in computer vision to extract salient regions and represent them by a single point for further processing. But while many algorithms exist for static images, there is hardly any method to obtain interest points from image sequences for the representation of salient motion. Here we ...