Image data require huge amounts of disk space and large bandwidths for transmission. Hence, imagecompression is necessary to reduce the amount of data required to represent a digital image. Thereforean efficient technique for image compression is highly pushed to demand. Although, lots of compressiontechniques are available, but the technique which is faster, memory efficient and simple, surely...

Micro-bunching instabilities limit the longitudinal compression of bunches in an electron storage ring. They create substructures on the bunch profile of some hundred micrometer size leading to coherently emitted synchrotron radiation in the THz range. To detect the changing THz spectrum, single-shot bunch-by-bunch and turn-by-turn measurements are necessary. We present recent experiments at AN...

There are several advantages to combine, at one end the image coding and watermark insertion operations and, at the other end, the image decoding and watermark extraction. In this paper, we describe a spread-spectrum-based watermarking technique in the framework of the JPEG 2000 still image compression. We also show that, by re-using the JPEG 2000 wavelet domain for watermark embedding, the pro...

Pancreatitis could be acute or chronic with both the forms causing spectrum of complications. Walled off necrosis or pseudocysts complicating pancreatitis can form at variable number of locations. Pseudocyst occurring at perinephric space is a rare complication. It can cause variety of symptoms like hematuria and renal compression. Authors present two such cases of pancreaticorenal fistula comp...

Topics of interest include, but are not limited to: Error Control Coding Coding Theory and Practice Coded Modulation Data Compression and Source Coding Communication Systems Optical Communications Detection and Estimation Mobile Communications Spread Spectrum Systems Pattern Recognition and Learning Signal Processing Speech/Image Coding Rate-Distortion Theory Shannon Theory Stochastic Processes...

Subacromial impingement syndrome (SIS) represents a spectrum of pathology ranging from subacromial bursitis to rotator cuff tendinopathy and full-thickness rotator cuff tears. The relationship between subacromial impingement and rotator cuff disease in the etiology of rotator cuff injury is a matter of debate. Both extrinsic compression and intrinsic degeneration may play a role. Management inc...

In this paper an audio watermarking technique is presented, using log-spectrum, dirty paper codes and LDPC for watermark embedding. This technique may be used as a digital communication channel, transmitting data at about 40 b/s. It may be also applied for hiding a digital signature, e.g., for copyright protection purposes. Robustness of the watermarks against audio signal compression, resampli...

We introduce a spectrometer design that uses Brillouin lasing to perform broadband spectral compression. This approach enables the entire C-band (optical frequencies covering 4 THz, or 25 nm) be compressed into 230 MHz wide RF spectrum—allowing THz optical spectrum monitored continuously using standard analog-to-digital converter. technique is based on linear dependence of frequency shift wavel...

prior animal models have shown that rats sustaining 3-second immediate spinal cord compression had significantly better functional recovery and smaller lesion volumes than rats subjected to compression times of 1 hour, 6 hours, 3 weeks, and 10 weeks after spinal cord injury. we compare locomotor rating scales and spinal cord histopathology after 3 seconds and 10 minute compression times. . ten ...

INTRODUCTION The quality of data obtained from image analysis can be directly affected by several preanalytical (e.g., staining, image acquisition), analytical (e.g., algorithm, region of interest [ROI]), and postanalytical (e.g., computer processing) variables. Whole-slide scanners generate digital images that may vary depending on the type of scanner and device settings. Our goal was to evalu...