In this research work adopted the frequency domain watermarking scheme which is embedded using discrete wavelet transform (DWT) and singular value decomposition (SVD). By singular values factoring it represent smaller set of values and it can preserve constructive feature of an original image. After that, apply discrete wavelet transform in decomposed in low frequency sub-band on both images to...

This paper provides comparison between two image compression technique such as DCT and DWT. Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT) are the most commonly used transformation. DCT has high energy compaction property and requires less computational resources. On the other hand, DWT is multi-resolution transformation. PSNR and Compression ratio are one of the parameter...

The aim of this paper to characterize a larger set of wavelet functions for implementation in a still image compression system using SPIHT algorithm. This paper discusses important features of wavelet functions and filters used in sub band coding to convert image into wavelet coefficients in MATLAB. Image quality is measured objectively using peak signal to noise ratio (PSNR) and its variation ...

To maximize end user satisfaction, Wireless multimedia application needs the communication networks to allocate resources dynamically. Cross layer framework design offers a solution to this problem. In this paper, a cross layer framework design strategy optimizes the application, physical and MAC layers jointly for video streaming. An efficient FEC mechanism to combat channel errors is chosen b...

Recently, the standardization of backward compatible JPEG image coding for high dynamic range image has been undertaken to establish an international standard called JPEG XT. Currently, three profiles called Profiles A, B, and C have been proposed for JPEG XT. Whereas all these profiles perform their image coding in the spatial domain, this paper proposes a new coding approach by manipulating D...

On hand watermark methods employ selective Neural Network techniques for watermark embedding efficiently. Similarity Based Superior Self Organizing Maps (SBS_SOM) a neural network algorithm for watermark generation. Host image is learned by the SBS_SOM neurons and the very fine RGB feature values are mined as digital watermark. Discrete Wavelet Transform (DWT) is used for watermark entrench. Si...

This paper presents a motion-compensated wavelet video coder applicable to VBR transmission where constant distortion coding at minimal rate is desired. The R-D optimization is achieved by jointly optimizing the coding parameters in both the variable block size motion estimation and the region-based embedded wavelet coding of the residual. Experiments are performed by matching PSNR prooles from...

Nighttime image context enhancement is one of the crucial areas in image processing as many objects can’t be seen due to poor illumination of the video. The purpose of image or video enhancement is to improve the visual appearance of the video. In this paper, a new algorithm is proposed in which the illuminant area of the nighttime image is enhanced to highlight the foreground and then it is fu...

We propose a method for medical image denoising using calculus of variations and local variance estimation by shaped windows. This method reduces any additive noise and preserves small patterns and edges of images. A pyramid structure-texture decomposition of images is used to separate noise and texture components based on local variance measures. The experimental results show that the proposed...

This paper evaluates the final reconstruction quality of 3D objects from different reconstruction methods by comparing rendered views of a 3D model to the original views, initially taken from 2D cameras. The paper uses pixel-by-pixel error measures, like pixelwise reconstruction error for non-textured objects and PSNR values for colored or textured objects. Concurrently, the limitations of such...