In this paper, a robust statistics based filter to remove salt and pepper noise in digital images is presented. The function of the algorithm is to detect the corrupted pixels first since the impulse noise only affect certain pixels in the image and the remaining pixels are uncorrupted. The corrupted pixels are replaced by an estimated value using the proposed robust statistics based filter. Th...

A new and efficient algorithm for high-density salt and pepper noise removal in videos is proposed. The proposed algorithm uses a modified decision based unsymmetric trimmed median filter to remove the high density salt and pepper noise. This filter restores the gray scale, and color images that are highly corrupted by salt and pepper noise. The existing methods are Standard median filter (MF),...

--This paper presents a filter for restoration of Dental images that are highly corrupted by salt and pepper noise and speckle noise, Poisson noise. After detecting and correcting the noisy pixel, the proposed filter is able to suppress noise level. In this paper for each noise proposed different type of filter and compare these three types of filter with their PSNR value and MSE value and SNR ...

These transitions are strongly disliked under both slight and considerable view changes, and our experimental findings suggests that cuts are not appropriate for our system. This is expected as cuts provide no additional cues to aid the orientation of the viewer. From the 30◦ rule, we might expect cuts to be preferred more in considerable view changes than slight view changes. However, for thes...

Various common error sources affect the quality of a map, e.g., salt and pepper noise and other forms of noise that are more or less uniformly distributed over the map. But there also exist errors that only occur very rarely in the mapping process but that have severe effects on the final result. They influence not only the local accuracy but also the whole spatial layout of the map. Examples o...

Cellular Automata (CA) have been considered one of the most 10 pronounced parallel computational tools in the recent era of na11 ture and bio-inspired computing. Taking advantage of their local 12 connectivity, the simplicity of their design and their inherent par13 allelism, CA can be effectively applied to many image process14 ing tasks. In this paper, a CA approach for efficient salt-n-peppe...

With the rapid growth of the Internet and the development of digital multimedia technologies, illegal copying, tampering, modifying and copyright protection have become very important issues. Hence, there is strong need of developing the techniques to face all these problems [1, 7]. Digital watermarking emerged as a solution for protecting the multimedia data. In this paper, we propose a method...

In this paper a wavelet-based logo watermarking scheme is presented. The logo watermark is embedded into all sub-blocks of the LLn sub-band of the transformed host image, using quantization technique. Extracted logos from all sub-blocks are merged to make the extracted watermark from distorted watermarked image. Knowing the quantization step-size, dimensions of logo and the level of wavelet tra...

This paper provides a new model based on the hybridization of wavelet and relaxed median filter for denoising of noisy medical images. The present study focuses on proposing a technique to reduce speckle and salt & pepper noise from CT (Computed Tomography) scan devices. In diagnosis of diseases, devices are frequently used by healthcare professionals. The main problem during diagnosis is the d...