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Domnic, S.
- A New Variable-Length Integer Code for Integer Representation and Its Application to Text Compression
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Authors
Affiliations
1 Department of Computer Science, Bharathiyar University, Coimbatore - 641046, Tamil Nadu, IN
2 Department of Computer Applications, PSNA College of Engineering and Technology, Dindigul – 624622, Tamil Nadu, IN
3 Department of Computer Applications, National Institute of Technology, Tiruchirappalli – 620015, Tamil Nadu, IN
1 Department of Computer Science, Bharathiyar University, Coimbatore - 641046, Tamil Nadu, IN
2 Department of Computer Applications, PSNA College of Engineering and Technology, Dindigul – 624622, Tamil Nadu, IN
3 Department of Computer Applications, National Institute of Technology, Tiruchirappalli – 620015, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 24 (2015), Pagination:Abstract
Data Compression plays an important role in reducing data storage space in computer memory and in achieving minimum data transmission time in communication networks. There are two types of data compression: lossless and lossy. In lossless data compression, decompression reproduces data that is exactly match the original data and in lossy data compression, the decompression reproduces data which is an approximation of the original data. Variable length integer codes such as Elias Gamma Code, Elias Delta Code, Golomb Code, have been used for data compression (i.e. integer compression, text compression, etc). In this paper, a new variable length integer code is proposed based on radix conversion and it is used with Burrows Wheeler Transform for text data compression. The performance of the proposed code is compared with Elias Gamma Code, Elias Delta Code and Golomb Code. For evaluation, Calgary corpus is used in the experiments, which contains both text file and binary files. Experimental results show that the Fibonacci code gives better compression rate on an average than all other coders and Elias Gamma code gives better compression rate for text files. The other coders perform well for binary files compared to Elias gamma code.Keywords
Burrows-Wheeler Compressione, Elias Delta Code, Elias Gamma Code, Golomb Code, Variable-Length Integer Code.- Shot Boundary Detection Using Hilbert Transform Based Features
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Authors
Affiliations
1 School of Information Technology and Engineering, Vellore Institute of Technology, IN
2 Department of Computer Applications, National Institute of Technology-Tiruchirappalli, IN
1 School of Information Technology and Engineering, Vellore Institute of Technology, IN
2 Department of Computer Applications, National Institute of Technology-Tiruchirappalli, IN
Source
ICTACT Journal on Image and Video Processing, Vol 5, No 4 (2015), Pagination: 1001-1009Abstract
The first and foremost step in the shot boundary detection is the extraction of features from the video sequences. To obtain better performance in shot boundary detection, a new method is proposed in this paper, where texture and local binary information extracted from the hilbert transformed frames are processed and represented as features. The similarity between the frames is constructed as continuity signal. The boundaries between the shots are identified by applying the shot transition identification procedure on the continuity signals. The proposed method is evaluated over the TRECVID 2007 SBD dataset and the performance is compared to the top performers of TRECVID 2007 SBD task.Keywords
Shot Boundary Detection, Hilbert Transform, Local Binary Information, Texture Feature, Shot Change Transition Identification.- Locally Global Codebook for Image Retrieval and Clustering Using Vector Quantization
Abstract Views :156 |
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Authors
Affiliations
1 Department of Computer Applications, National Institute of Technology, Tiruchirappalli, IN
1 Department of Computer Applications, National Institute of Technology, Tiruchirappalli, IN