BACKGROUND Not all patients with spinal cord compression due to cervical spondylotic myelopathy (CSM) have clinical symptoms and signs. The aim of this study was to investigate and compare the imaging findings in asymptomatic and symptomatic patients with CSM with mild to moderate cervical spinal cord compression. MATERIAL AND METHODS A retrospective clinical study included 68 patients. Group A...

A hybrid image compression method is proposed in this paper which segments the image into background and foreground and compress them with different quality levels.. The foreground of the image is given more importance than the background. An edge based segmentation method is used to segment the image into foreground area and background area. The proposed method highly preserves quality of the ...

This paper presents the ECG-dedicated algorithm performing the signal sampling at the variable rate. The local value of sampling interval is controlled by the bandwidth function representing the medical data density. The achieved data compression ratio equals 3 and the distortion level is very low. Practical considerations on adaptive antialias filtering and hardware implementation complete the...

diesel fuel has a limited resource and concerns over environmental pollution areleading to the use of ‘bio-origin fuels’ as they are renewable and environmentally benign. jatrophamethyl ester, an esterified biofuel, has an excellent cetane number and a reasonable calorific value.it closely resembles the behaviour of diesel. however, being a fuel of different origin, the standarddesign limits of...

This paper presents FPGA-based implementation and performance analysis of the hardware for lossless compression of a floating-point data stream. The implementation includes the variable-to-fixed length converter (VFCONV) and the fixed-to-variable length converter (FVCONV) that have not been designed and evaluated so far. The prototype system on ALTERA Stratix IV FPGA demonstrates that the compr...

This paper presents LZAC, a new universal lossless data compression algorithm derived from the popular and widely used LZ77 family. The objective of LZAC is to improve the compression ratios of the LZ77 family while still retaining the family’s key characteristics: simple, universal, fast in decoding, and economical in memory consumption. LZAC presents two new ideas: composite fixed-variable-le...