Data Compression Techniques

نویسندگان

  • Gaurav Sethi
  • Chandrani Chakravorty
چکیده

Data compression has important application in the field of file storage and distributed systems. It helps in reducing redundancy in stored or communicated data. This paper studies various compression techniques and analyzes the approaches used in data compression. Furthermore, information theory concepts that relates to aims and evaluation of data compression methods are briefly discussed. A framework for the evaluation and comparison of various compression algorithms is constructed and applied to the algorithms presented here. This paper reports the theoretical and practical nature of compression algorithms. Moreover, it also discusses the future possibilities of research work in the field of data compression.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Implementation of VlSI Based Image Compression Approach on Reconfigurable Computing System - A Survey

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...

متن کامل

MEDICAL IMAGE COMPRESSION: A REVIEW

Within recent years the use of medical images for diagnosis purposes has become necessity. The limitation in transmission and storage space also growing size of medical images has necessitated the need for efficient method, then image Compression is required as an efficient way to reduces irrelevant and redundancy of the image data in order to be able to store or transmits data. It also reduces...

متن کامل

Comparison of the Effects of Three Different Counting Methods on Cardiopulmonary Resuscitation Quality and Rescuer Fatigue

Background: Chest compression with adequate depth and number is one of the main indicators of high-quality cardiopulmonary resuscitation (CPR). Nevertheless, no proper counting technique is suggested to provide sufficient number of massages. Aim: To compare the effects of three techniques of chest compression counting on the quality of CPR and rescuer fatigue. Method: Inthis clinical trial, 30 ...

متن کامل

Medical Image Compression Based on Region of Interest

Medical images show a great interest since it is needed in various medical applications. In order to decrease the size of medical images which are needed to be transmitted in a faster way; Region of Interest (ROI) and hybrid lossless compression techniques are applied on medical images to be compressed without losing important data. In this paper, a proposed model will be presented and assessed...

متن کامل

A Novel Color Image Compression Method Using Eigenimages

Since the birth of multi–spectral imaging techniques, there has been a tendency to consider and process this new type of data as a set of parallel gray–scale images, instead of an ensemble of an n–D realization. Although, even now, some researchers make the same assumption, it is proved that using vector geometries leads to better results. In this paper, first a method is prop...

متن کامل

تأثیر فشردن قفسه سینه در زمان بازدم قبل از ساکشن داخل تراشه بر تبادل گازهای خون شریانی بیماران تحت تهویه مکانیکی

  Background & Aim : Endotracheal suctioning is one of the most frequently used methods for airway clearance in patients under mechanical ventilation. Chest physiotherapy techniques such as expiratory rib cage compression before endotracheal suctioning can be used as a means to facilitate mobilizing and removing airway secretions and improving alveolar ventilation. This study was carried out to...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2014