Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Fast Fourier Transform


A Proposal Technique of High Impedance Fault Detection Using Adaptive Neuro- Fuzzy Logic Control

Mohammed YahyaSuliman

Engineering and Technology Journal, 2016, Volume 34, Issue 11, Pages 2086-2095

High impedance fault HIF produced when an energized conductor falls and contact with an objects have high impedancelike: tree limb, concrete walls, or falls down to the ground. The importance of these undetectable faults isrepresent a safety hazard, also a risk of arcing that causes ignition of fires. This type of fault is cannotbe detected by overcurrent protections. The techniques of detecting HIFs are depending on harmonicanalysis of the line current.In this paper, aproposed techniqueuseddepending on themeasure of the 3rd harmonic.Takagi-Sugeno fuzzy controller is proposed and the rules are trained off-line. The practical results show the ability of the controller to detect and distinguish the HIF with high accuracy.The magnitude and angle of 3rd harmonic were 1% of fundamental and 800respectively. The experiment results obtained using the NI 6250 data acquisition board and Matlab real time toolbox.

Remove Logos from Video Using Linear and Fast Fourier Interpolation Methods

Abdulameer A. Kareem; Sura Hameed Mahdi

Engineering and Technology Journal, 2016, Volume 34, Issue 6, Pages 852-859

The object removal from video is sometimes necessary in some application. The process of removing object includes remove text, logo, watermark or a particular object. These objects may be static or dynamic in the video. The removed object are detected by binary mask and try to fill the background of removed object that in a non-noticeable visually. A completion is the process of rebuilding lost or degraded parts from frames of the video. In this paper an efficient technique are proposed to fill the missing parts of the frames within the video. This work include two algorithms: The first algorithm is Vertical, Horizontal and 4Neighbors algorithm (VH4NA) that contain three stages for filling process (vertical, horizontal and 4neighbors interpolation). The second algorithm is Fast Fourier interpolation algorithm (FFIA) depends on the Fast Fourier Transform for filling lost areas. The results showed that the proposed algorithms to fill the missing or damage parts of the video frames are in a visually pleasing way. The First algorithm is used to fill the missing parts with simple background, while the second algorithm used to fill the missing parts with complex background. The time consumed for the implementation of the first algorithm is less than time for implementation of the second”