Article | 08-April-2018
In the text, A method of image watermarking based on DCT (Discrete Cosine Transform) domain algorithm is proposed and verified in experiment by Matlab. The experimental result shows that the current method can achieve embedding with sound robustness and invisibility. From the experimental results, the quality of the watermarked image is almost no decline relative to the original.
Wu He-Jing
International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 2, 38–45
Research paper | 20-February-2013
The objective of this paper is to study the image communication behavior of a wireless video sensor, and analyze its performance under resource constrained wireless multimedia sensor networks. Energy consumption and rate distortion model of DCT-based coded image compression and transmission is developed. Based on energy consumption and rate distortion model proposed, resource allocation is optimized with limited energy and bandwidth. Number of DCT coefficient and step size of quantization table
Xiong Zheyuan,
Fan Xiaping,
Liu Shaoqiang,
Li Yongzhou,
Zhang Huan
International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 1, 120–135
research-article | 30-November-2019
, companding, and signal distortion are not directly appropriate for FBMC due to the increased overlapping factor of the time-domain symbols. Both clipping and companding have low complexity, and these are less complex procedures for PAPR reduction. In this paper, two PAPR reduction schemes are suggested, i.e. clipping and companding, combined with precoding (DST and DCT) schemes. The organization of the manuscript is as follows: a literature review with respect to the proposed methodology is presented in
Satwinder Kaur,
Lavish Kansal,
Gurjot Singh Gaba,
Fahad Alraddady,
Sandeep Kumar Arora
International Journal on Smart Sensing and Intelligent Systems, Volume 13 , ISSUE 1, 1–10
Article | 01-March-2015
and invisibility of watermarking algorithm, this paper analyzes the embedding position and strategy of transform domain algorithms, the DC coefficient in the carrier image is divided into blocks of DCT spectrum and spectrum on the combination of DWT coefficient method and the advantage of embedded dual watermarking, and use the NEC characteristic of the algorithm is improved adaptive based on the embedded mode. The gray image watermark bit plane decomposition compression high four bit plane
Zhu Yuefeng,
Lin Li
International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 1, 199–219
Research Article | 01-June-2017
B. Sridhar
International Journal on Smart Sensing and Intelligent Systems, Volume 10 , ISSUE 2, 387–406