Introduction/purpose: The paper presents interesting research related to the performance analysis of picture-wise just noticeable difference (JND) prediction model and its application in quality assessment images with JPEG compression. Methods: JND was conducted an indirect way by using publicly available results subject-rated image datasets separation into two classes (above below threshold vi...

Transform coding has been the focus of the research for image compression. In previous research, the Amplitude and Group Partitioning (AGP) coding scheme is proved to be a low complexity algorithm with high performance , clearly one of the state-of-art transform coding techniques. However, the previous AGP is used along with the Discrete Cosine Transform (DCT) and the discrete wavelet transform...

In this paper, the newly introduced swarm-based optimisation algorithm called intelligent water drops (IWDs) algorithm is adjusted to optimise a modified Otsu’s criterion for automatic multilevel thresholding. The proposed algorithm simply called IWD-AMLT is tested with several grey-level images and its performance is assessed by the peak signal to noise ratio (PSNR) measure. The thresholded im...

Abstractwith the advent of digital media copyright protection is main concern. To protect copyright of images DWT DCT image watermarking is used. In this CDMA approach of embedding watermark is taken so that maximum number of watermarks can be embedded in original image to increase its authenticity. After embedding PSNR values are calculated at each watermark embedding and a table is constructe...

In this paper, Wavelet Transform, Fractional Fourier Transform (FrFT) and Fractional Cosine Transform (FrCT) are compared using Mean Square Error (MSE) and Peak signal-toNoise Ratio (PSNR) in the field of image compression. Wavelet provides better MSE and PSNR at lower Compression Ratio (CR), whereas FrFT provides good result at higher CR and FrCT provides same results as that of Wavelet at hig...

This paper investigates the suitability of WiMAX/ IEEE-802.16 – based broadband wireless access (BWA) technologies for telemedicine services. Beginning with a brief review of Wireless communication technologies for health and comparison of the basic features of Wi-Fi and WiMAX broadband access technologies, performance of WiMAX physical layer has been evaluated for médical image transmission in...

A novel genetic-concept-based algorithm is proposed for fragile audio watermarking to reduce the distortion of least significant bits substitution and consequently improve the peak signal-to-noise ratio (PSNR) and increase the payload of results. The result of testing shows that in comparison with ordinary substitution techniques and other presented techniques, the payload is considerably incre...

Deep Convolutional Neural Networks (CNN) have won a significant place in the computer vision recently, which repeatedly convolving an image to extract the knowledge behind it. However, with the depth of convolutional layers getting deeper and deeper in recent years, the computational complexity also increases significantly, which make it difficult to be deployed on embedded systems with limited...

In this paper, the authors propose a new algorithm to hide data inside image using steganography technique. The proposed algorithm uses binary codes and pixels inside an image. The zipped file is used before it is converted to binary codes to maximize the storage of data inside the image. By applying the proposed algorithm, a system called Steganography Imaging System (SIS) is developed. The sy...

One digital watermarking method, based on the spread spectrum technique, is described in this paper. This method uses the frequency hopping spread spectrum in order to determine positions for watermark embedding in an original image, while the direct spread spectrum technique is used to provide robustness to the watermark signal. To embed the watermark signal, the selected bits are used to carr...