Journal of VLSI Signal Processing Systems
Matrix factorizations for reversible integer implementation of orthonormal M-band wavelet transforms
Signal Processing - Special section: Advances in signal processing-assisted cross-layer designs
IEEE Transactions on Pattern Analysis and Machine Intelligence
Optimisation techniques for the system on chip implementation of JPEG encoder
ISCGAV'05 Proceedings of the 5th WSEAS International Conference on Signal Processing, Computational Geometry & Artificial Vision
Low-complexity and energy efficient image compression scheme for wireless sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Iris recognition using discrete sine transform and neural network
Proceedings of the International Conference and Workshop on Emerging Trends in Technology
Encrypted domain DCT based on homomorphic cryptosystems
EURASIP Journal on Information Security - Special issue on enhancing privacy protection in multimedia systems
Video transcoding to support random access in scalable video coding
WSEAS Transactions on Signal Processing
Semantic multi-grain mixture topic model for text analysis
Expert Systems with Applications: An International Journal
Event-driven video adaptation: A powerful tool for industrial video supervision
Multimedia Tools and Applications
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A method is proposed to factor the type-II discrete cosine transform (DCT-II) into lifting steps and additions. After approximating the lifting matrices, we get a new type-II integer discrete cosine transform (IntDCT-II) that is float-point multiplication free. Based on the relationships among the various types of DCTs, we can generally factor any DCTs into lifting steps and additions and then get four types of integer DCTs, which need no float-point multiplications. By combining the polynomial transform and the one-dimensional (1-D) integer cosine transform, a two-dimensional (2-D) integer discrete cosine transform is proposed. The proposed transform needs only integer operations and shifts. Furthermore, it is nonseparable and requires a far fewer number of operations than that used by the corresponding row-column 2-D integer discrete cosine transform