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Abstrak :
Perkembangan teknologi Voice Over Internet Protocol (VoIP) bermula dari kebutuhan layanan komunikasi suara dan komunikasi data yang merupakan dasar sistem komunikasi yang digunakan manusia. VoIP merupakan teknologi komunikasi suara yang memungkinkan pengguna untuk dapat saling berbicara menggunakan jaringan internet (D) yang telah memasyarakat dengan biaya murah. Namun aplikasi VoIP ini terhambat oleh terbatasnya bandwidth di warnet. Teknik pengkodean suara digunakan untuk menyampaikan informasi melalui saluran telekomunikasi dengan bandwidth yang terbatas tetapi tidak mengorbankan kualitas suara yang dihasilkan. Ada 5 jenis audio codec yang diuji kualitas suara keluarannya dengan metode subjektif dalam penlitian ini, yaitu G.723.1 (6400 bit/s), G.723.1 (5333 bit/s), CCITT u-Law, CCITT A-Law dan ADPCM. Analisa hasil pengujian menunjukkan bahwa audio codec G.723.1 (5333 bit/s) adalah yang terbaik untuk aplikasi VoIP di warnet, dengan nilai DRT sebesar 55,42 dan nilai MOS sebesar 4,05 yang menunjukkan kualitas suara keluaran yang cukup bagus dan jelas didengar oleh telinga manusia. Nilai-nilai ini dihasilkan berdasarkan uji dengar yang dilakukan dengan melibatkan beberapa orang responden yang memberikan rating terhadap suara yang didengarnya.

Abstrak :
ABSTRAK Pemampatan gambar bergerak merupakan proses mereduksi jumlah bit dengan menghilangkan redundansi spasial dan redundansi temporal yang terdapat pada gambar bergerak. Dengan menghilangkan redundansi ini diperoleh rasio pemampatan yang sangat berarti tanpa mengurangi kualitas gambar rekonstruksi. Salah satu metode untuk menghilangkan redundansi spasial adalah menggunakan Wavelet Transform sedangkan untuk menghilangkan redundansi temporal digunakan Block Matching Algorithm Motion Compensation (BMA-MC). Pada Tesis ini dilakukan simulasi dan analisa unjuk kerja sistem pemampatan gambar bergerak menggunakan metode kuantisasi vektor dan yang dipadukan dengan WT BMA-MC. Penerapan metode kuantisasi vektor pada WT BMA dapat meningkatkan unjuk kerja sistem pemampatan gambar bergerak untuk gambar dengan aktivitas pergerakan rendah sedangkan untuk gambar dengan aktivitas pergerakan cukup tinggi tidak memberikan perbedaan yang berarti dari metode kuantisasi skalar.

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ABSTRACT Video signals compression is a process to reduce bit information by eliminating spatial redundancies and temporal redundancies. One of the methods to eliminate spatial redundancies is Wavelet Transform, while Block Matching Algorithm Motion Compensation (BMA-MC) can eliminate temporal redundancies. Removing both redundancies could reach compression ratio significantly without decreasing quality of reconstructed image. The simulation results showed that the proposed system by using wavelet transform and BMA-MC with vector quantization performance was better than by using Wavelet transform and BMA-MC with scalar quantization for image with low moving activity but image with high moving activity gave insignificant different result.

Abstrak :
This book presents various video processing methodologies that are useful for distance education. The various methods described in the book focus on a key-frame based approach which is used to time shrink, repackage and retarget instructional videos. All the methods need a preprocessing step of shot detection and recognition, which is separately given as a chapter. The book also presents a legibility retentive retargeting of this instructional media on mobile devices with limited display size. All these technologies contribute to the enhancement of the outreach of distance education programs.

Abstrak :
This book investigates advanced techniques in user identification and security, including retinal, facial, and finger print scans as well as signature and voice authentication models"-- Provided by publisher.

Abstrak :
The book presents a detailed methodology for parallelization of this type of applications. It begins with a description of the algorithm, an analysis of the data dependencies and an evaluation of the different parallelization strategies. Then the design and implementation of a novel parallelization approach is presented that is scalable to many core architectures. Experimental results on different parallel architectures are discussed in detail. Finally, an outlook is given on parallelization opportunities in the upcoming HEVC standard.

Abstrak :
This volume presents contributions establishing the feasibility of human language-like communication with robots. The book explores the use of language games for structuring situated dialogues in which contextualized language communication and language acquisition can take place. Within the text are integrated experiments demonstrating the extensive research which targets artificial language evolution. Language grounding in robots uses the design layers necessary to create a fully operational communicating robot as a framework for the text, focusing on the following areas, embodiment, behavior, perception and action, conceptualization, language processing, whole systems experiments.

Abstrak :
ITU and ISO/IEC standards are now widely accepted in the picture/video coding field. This book gives an authoritative explanation of picture and video coding algorithms, working from basic principles through to the advanced video compression systems now being developed. One of its main objectives is to describe the reasons behind the introduction of a standard codec for a specific application and its chosen parameter. This book will enable readers to appreciate the fundamentals needed to design a video codec for any given application and should prove to be a valuable resource for engineers working in this field.