Nowadays, using transfer information includes images has increased due to increasing use of computer demands. Chaos-based image encryption method is one of the most efficient methods which is used to hide visual information during transmission. This paper presents a new image encryption method based on Logistic and Tent chaotic maps and permutation-diffusion architecture, in which, chaotic maps...

Background: Nowadays, image de-noising plays a very important role in medical analysis applications and pre-processing step. Many filters were designed for image processing, assuming a specific noise distribution, so the images which are acquired by different medical imaging modalities must be out of the noise. Objectives: This study has focused on the sequence filters which are selected ...

A noise is introduced in the transmission medium due to a noisy channel, errors during the measurement process and during quantization of the data. For digital storage each element in the imaging chain such as lenses, film, digitizer, etc. contributes to the degradation. Image noise removal is often used in the field of photography or publishing where an image was somehow degraded but needs to ...

Target classification techniques using spectral imagery and light detection and ranging (LiDAR) are widely used in many disciplines. However, none of the existing methods can directly capture spectral and 3D spatial information simultaneously. Multispectral LiDAR was proposed to solve this problem as its data combines spectral and 3D spatial information. Point-based classification experiments h...

Copyright information embedded in a digital data may disappear or become undetectable due to additive noise accidentally or deliberately introduced to a watermarked image. Several watermarking schemes have been proposed to overcome such attacks but remain inefficient due to its limited redundancy. In this paper, a new watermarking scheme that is robust against Salt and Pepper attack using Sudok...

Visual information transmitted in the form of digital images is becoming a major method of communication in the modern age, but the image obtained after transmission is often corrupted with noise. The received image needs processing before it can be used in applications. Image noise removal involves the manipulation of the image data to produce a visually high quality image. This paper reviews ...

Digital image processing can use an image as an input, analyze it and gives an output as in meaningful away. Image segmentation is an important method through which we can analyze the image. It is the process of partitioning a digital image into multiple segments. The important step of image processing is Edge Detection. Edge detection is a well-developed field on its own within image processin...

This paper proposes a new median filter using prior information to capture natural pixels for restoration. In addition to being very efficient in logic execution, the proposed filter restores corrupted images with 1–99% levels of salt-and-pepper impulse noise to satisfactory ones. Without any iteration for noise detection, it intuitively and simply recognizes impulse noises, while keeping the o...