Introduction to Data Compression
نویسنده
چکیده
3 Probability Coding 10 3.1 Prefix Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1.1 Relationship to Entropy . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.2 Huffman Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2.1 Combining Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2.2 Minimum Variance Huffman Codes . . . . . . . . . . . . . . . . . . . . . 15 3.3 Arithmetic Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.3.1 Integer Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
منابع مشابه
Determining the Proper compression Algorithm for Biomedical Signals and Design of an Optimum Graphic System to Display Them (TECHNICAL NOTES)
In this paper the need for employing a data reduction algorithm in using digital graphic systems to display biomedical signals is firstly addressed and then, some such algorithms are compared from different points of view (such as complexity, real time feasibility, etc.). Subsequently, it is concluded that Turning Point algorithm can be a suitable one for real time implementation on a microproc...
متن کاملThe effect of Combined Decongestive Therapy and pneumatic compression pump on body image in women with breast cancer related lymphedema
Introduction: Patients with breast cancer who have two positive axillary lymph nodes, along with mastectomy, they undergo axillary node dissection. Lymphedema after axillary surgery is a feared complication. This women experience pain and body image impairments. Any intervention to reduce lymphedema, affects the body image of these patients. Method: This study is a randomized, single-blind clin...
متن کاملبررسی اثر نوروپروتکتیوی عصاره الکلی برگ گیاه شاهدانه(کانابیس ساتیوا) بر دژنراسیون آلفا موتونورونهای نخاع پس از آسیب عصب سیاتیک در رت
Introduction: Injuries of the peripheral nerve system affect the neurons cell body leading to axon injury. Cannabis sativa plant has anti oxidant and anti apoptotic effects. Therefore the aim of present study was to study the neuroprotective effect of alcoholic extract of cannabis sativa leaves on neuronal density of alpha motoneurons in spinal cord after sciatic nerve injury in rats. Methods:...
متن کاملThe Effects of Rib Cage Compression before endotracheal suctioning
Abstract Introduction: Accumulation of secretions in airways is a serious complication in intubated and mechanically ventilated patients. Tracheal suctioning which is done with the aim of secretion removal can be used in conjunction with physiotherapy for effective airway clearance and improving gas exchange. Objective: The aim of study was to determine the effects of rib cage compression befor...
متن کاملImplementation 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 کاملMEDICAL 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