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"This book provides basic theories and implementations using SCILAB open-source software for digital images. The book simplifies image processing theories and well as implementation of image processing algorithms, making it accessible to those with basic knowledge of image processing. This book includes many SCILAB programs at the end of each theory, which help in understanding concepts. The book includes more than sixty SCILAB programs of the image processing theory. In the appendix, readers will find a deeper glimpse into the research areas in the image processing."

"This book providing clear and concise explanations of the basic concepts of computer graphics, and enabling the reader to immediately implement these concepts in Java 2D and/or 3D with only elementary knowledge of the programming language. Features, provides an ideal, self-contained introduction to computer graphics, with theory and practice presented in integrated combination, presents a practical guide to basic computer graphics programming using Java 2D and 3D, includes new and expanded content on the integration of text in 3D, particle systems, billboard behaviours, dynamic surfaces, the concept of level of detail, and the use of functions of two variables for surface modelling, contains many pedagogical tools, including numerous easy-to-understand example programs and end-of-chapter exercises, supplies useful supplementary material, including additional exercises, solutions, and program examples, at an associated website."

"This textbook provides engineering students with instruction on processing signals encountered in speech, music, and wireless communications using software or hardware by employing basic mathematical methods. The book starts with an overview of signal processing, introducing readers to the field. It goes on to give instruction in converting continuous time signals into digital signals and discusses various methods to process the digital signals, such as filtering. The author uses MATLAB throughout as a user-friendly software tool to perform various digital signal processing algorithms and to simulate real-time systems. Readers learn how to convert analog signals into digital signals; how to process these signals using software or hardware; and how to write algorithms to perform useful operations on the acquired signals such as filtering, detecting digitally modulated signals, correcting channel distortions, etc. Students are also shown how to convert MATLAB codes into firmware codes. Further, students will be able to apply the basic digital signal processing techniques in their workplace. The book is based on the author's popular online course at University of California, San Diego."

"Saat ini kemajuan teknologi berkembang sangat pesat. Salah satunya yaitu teknologi informasi dan komunikasi. Pengiriman dan penerimaan informasi menjadi sangat mudah, namun hal tersebut tidak serta merta berjalan aman. Berkembangnya teknologi informasi dan komunikasi pun diiringi oleh kejahatan seperti penyadapan informasi. Untuk itu dibutuhkan algoritma untuk mengamankan informasi, salah satu caranya yaitu dengan menerapkan ilmu kriptografi. Metode yang digunakan yaitu metode enkripsi. Menggunakan konsep teori chaos, dengan fungsi tangent logistic map. Pengujian terhadap algoritma enkripsi menggunakan tangent logistic map ini menghasilkan ruang kunci sebesar 10⁴⁵ dan sensitivitas kunci mencapai 10⁻¹⁶ sehingga sulit dipecahkan oleh brute force attack. Disamping itu, distribusi dari nilai-nilai pixel citra hasil enkripsi terbukti uniform serta berdasarkan uji NIST (National Institute of Standard and Technology) keystream yang dihasilkan pun terbukti acak dengan 𝑃.𝑣𝑎𝑙𝑢𝑒= 0.97≥1% sehingga sulit dipecahkan oleh known plaintext attack.

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Nowadays, advance in technology is growing very rapidly, as well as information technology and communication. Sending and receiving information become very easy but it is not necessarily secure because it is also accompanied by crime, such as cracking the data/ information. Therefore we need an algorithm to secure the data/ information, one way is applying cryptography theory, with an encryption method and the concept of chaos theory using tangent logistic map. Some of the results of tests performed on this encryption algorithm using tangent logistic map are key space is about 1045 ; the sensitivity level is about 10−16, so that this algorithm has a high resistance to bruteforce attack. Besides that, the histogram is almost flat and based on the results of NIST (National Institute of Standard and Technology) tests, this algorithm produces random number, shown by 𝑃.𝑣𝑎𝑙𝑢𝑒=0.97≥0.0, so that this algorithm has also a high resistance to known plaintext attack."