Denoising the Underwater Images by using Adaptive Filters
Journal Title: Advances in Image and Video Processing - Year 2017, Vol 5, Issue 2
Abstract
The Sound Navigation And Ranging and synthetic aperture radar images are perturbed by the multiplicative noise called speckle noise . The presence of speckle noise leads to incorrect analysis and has to be handled carefully. Images have a strong variation from one pixel to another which reduces the efficiency of the algorithms for detection and classification. In this paper, the most well-known filters are analyzed by using underwater images. It is shown that they are based on a test related to the local coefficient of variation of the observed image, which describes the scene heterogeneity. Linear noise removing models can remove noise but are not able to preserve edges of the images in an efficient manner . On the other hand, Non-linear models can handle edges in a much better way than linear models. It is found that the linear filters and nonlinear filters can remove noise from small area objects and homogeneous areas but not in heterogeneous areas. Adaptive filters are used to remove noise not only from homogeneous area but also from heterogeneous areas. This paper presents an optimum filter by using locally estimated parameter values to provide minimum mean square error in order to smoothen the sonar images. It is also shown that the optimum filter is computationally efficient. The performance of this adaptive filter is compared (qualitatively) with other filters and found that the complexity of the frost filter is reduced.
Authors and Affiliations
Azra Jeelani, Veena M B
Keywords
Related Articles
- EP ID EP303214
- DOI 10.14738/aivp.52.2939
- Views 86
- Downloads 0
A Logic Circuit Simulation for Choosing a Group or a Question using Register and Encoder
Besides learning and working individually, normally people also interact in a group. A teacher or manager will divide and put several persons in groups, and mostly the group arrangement will be organized according to som...
Studying the Characteristics of Vertisols to Set Up Field Management Practices at Dinder Area (Sennar State - Sudan)
The development of irrigated agriculture in Dinder area was part of the program to heighten the Rosaries Dam built on the Blue Nile and irrigate more lands on both banks of the river. The Dinder Area on the right bank of...
Participatory Management of Muscles Strengthening of Core Stability and Lower Extremity to Reduce of Premenstrual Syndrome
Competence to reduce of premenstrual syndrome must be have each student, so physically and psychologically able to do activities Tridharma Colleges well. One of the efforts that can reduce of premenstrual syndrome is doi...
RANSAC Algorithm for Matching Inlier Correspondences in Video Stabilization
In order to stabilize a video sequence we need to find a transformation which reduces the distortion between frames. To find this transformation feature points must be identified in consecutive frames. In order to get th...
A Structural Analysis on the Creativity, Self-Leadership, Self-Determination, Career Decision-Making Self-Efficacy, and Career Preparation Behavior of College Students who participated in the Training Courses from Lifelong Educators
We conducted a structural analysis on the creativity, self-leadership, self-determination, career decision-making self-efficacy, and career preparation behavior of college students who participated in the training course...