Image enhancement is a challenging issue in many applications. In the last two decades, there are various filters developed. This paper proposes a novel method which removes Gaussian noise from the gray scale images. The proposed technique is compared with Enhanced Fuzzy Peer Group Filter (EFPGF) for various noise levels. Experimental results proved that the proposed filter achieves better Peak...

The enhancement of QoS has emerged as a major research area in Real Time Multimedia Transmission in Hybrid Wireless networks. The network made up of Infrastructure and Adhoc Wireless Networks is sometimes referred to as Hybrid wireless network. We propose a scheme named PIW (PSNR Improvement in Wireless) to improve PSNR by using RTP/RTCP . RTCP provides control information that is used, by adju...

The performance of the Ad-Hoc networks is highly impacted with the Signal to Noise Ratio. The PSNR (Peak Signal to Noise Ratio) is an important parameter for the evaluation of multimedia traffic in Ad-Hoc Networks. With the increase of bandwidth of the channels, it becomes necessary to take care of other network parameters like PSNR and ASNR( Average Signal to Noise Ratio) .Enhanced bandwidth w...

Medical images like ultrasound images are generally corrupted by speckle noise during their acquisition and transmission. The impact of speckle noise reduces the diagnostic value of the medical image modality. Thus, a speckle noise reduction technique is necessary for the suppression of noise and to retain the fine details from the corrupted image. In this article, a new speckle noise reduction...

The basic requisites for any steganography algorithm include imperceptibility, embedding capacity and robustness to communication attacks. To measure the quality of gray-scale or color image, the metric such as PSNR is widely used by researchers in steganography. However, for digital color image, there are many other options such as WPSNR, PSNRE, PSNRY, PSNR-HSR, CQM etc. In this paper, we have...

In this paper we have discussed compression and analysis of image using high resolution grid and SPIHT encoding technique. Firstly the original image is converted in to low resolution (less size) image, then quantization and SPIHT encoding, techniques are applied to compress the image. To restore the original image, the compressed image is decompressed (dequantized & decoded) and interpolation ...

Nowadays, we all have seen that use of internet has become very important to all the generations. So, large amount of data has been shared through internet. So, important information that has been travelling through internet can be copied by an unauthorized user. To avoid this type of problem Digital Watermarking Technique has been used. In this paper watermarked image has been developed using ...

Digital Watermarking offers techniques to hide watermarks into digital content to protect it from illegal copy or reproduction. Existing techniques based on spatial and frequency domain suffer from the problems of low Peak Signal to Noise Ratio (PSNR) of watermark and image quality degradation in varying degree. In earlier papers, the author proposed only the watermark was embedded and extracte...