Volume 12, Issue 2 (2016) | Journal of Computer Science

Feature Extraction Method for Improving Speech Recognition in Noisy Environments

Youssef Zouhir — 2016-03-25

Journal of Computer Science, Published online: 25 March 2016; doi:10.3844/jcssp.2016.56.61

The paper presents a feature extraction method, named as Normalized Gammachirp Cepstral Coefficients (NGCC) that incorporates the properties of the peripheral auditory system to improve robustness in ...

State-of-the-Art in Techniques of Text Digital Watermarking: Challenges and Limitations

Nasr Addin Ahmed Salem Al-Maweri — 2016-03-19

Journal of Computer Science, Published online: 19 March 2016; doi:10.3844/jcssp.2016.62.80

Data protection from malicious attacks and misuse has become a crucial issue. Various types of data, including images, videos, audio and text documents, have given cause for the development of differe...

Broken Character Image Restoration Using Genetic Snake Algorithm: Deep Concavity Problem

Qusay Omran Mosa — 2016-03-22

Journal of Computer Science, Published online: 22 March 2016; doi:10.3844/jcssp.2016.81.87

Active contours also known as snakes became a familiar and widely used in the field of image segmentation and restoration of historical documents in last few decades. Gradient Vector Flow (GVF) snake ...

Enhancing the Robustness of Visual Degradation Based HAM Reversible Data Hiding

Habiba Sultana — 2016-03-26

Journal of Computer Science, Published online: 26 March 2016; doi:10.3844/jcssp.2016.88.97

Purposely visual degradation of image quality is a newfangled idea in the area of Histogram Association Mapped (HAM) reversible data hiding. Such scheme first divides the color scale, i.e., 0-255, int...

A Key Dependent Encryption Algorithm Based on Multiple Bitwise-Shuffling and XOR Variable-Length Partitions

Abdelfatah Aref Tamimi — 2016-03-26

Journal of Computer Science, Published online: 26 March 2016; doi:10.3844/jcssp.2016.98.105

This new algorithm employs shuffling procedures combined with variable-length key-dependent XOR and S-box substitutions to perform lossless image encryption. This algorithm was implemented and tested ...

Mobile Robot: SLAM Implementation for Unknown Indoor Environment Exploration

Mohamed Emharraf — 2016-03-26

Journal of Computer Science, Published online: 26 March 2016; doi:10.3844/jcssp.2016.106.112

The autonomy is the most crucial criteria in mobile robots. This operation aims to offer the ability of finding the position and build a map of the environment to the robot. Many methods have been pro...