directional filter
A Novel Statistical Thresholding in Edge Detection Using Laplacian Pyramid and Directional Filter Banks
... Initially, the flower image shown in Fig 4 is considered for experimentation. The proposed algorithm is tested by taking a ‘Meyer’ Laplacian Pyramidal wavelet and the ‘meyerh2’, ‘5/3’, ‘9/7’ directional ...
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Edge Detection using Directional Filter Bank
... [12-15]. Directional oriented representations of images are great interest for many ...years. Directional information is important in many image applications like image enhancement, denoising, edge ...
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A Post Processing Algorithm for Spatial Domain Detection & Removal of Blocking Artifacts
... This paper mainly focused on blocking artifacts detection and reduction using Quality factor based adaptive thresholding in JPEG compressed images and local properties of images for edge preservation and artifact ...
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Proficient Image Compression for Retinal Fundus Images
... A filter bank structure that can deal effectively with piecewise smooth images with smooth contours, was proposed by Minh N Do and Martin ...a directional multiresolution analysis framework composed of ...
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Multichannel Texture Segmentation Using Bamberger Pyramids
... the filter bank structure. Alternatively, a multiresolution directional decomposition can be constructed using a polar-separable ...radial filter with a directional filter (or vice ...
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Empirical Evaluation of Wavelet & Contourlet Transform for Medical Image Denoising Using Shrinkage Thresholding Techniques
... The contourlet transform can effectively overcome the disadvantages of wavelet; contourlet transform is a multi- scale and multi-direction framework of discrete image. In this transform, the multiscale analysis and the ...
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Directional 3D Peer Group Filter for Color Image with Random Impulse Noise
... vector directional filter (BVDF) and Karakos and Trahanias [3] presented a directional-distance filter ...via directional processing in order to maintain image ...
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Architectural Distortion Detection in Mammogram using Contourlet Transform and Texture Features
... morphological filter and this filtered output is given to the Contourlet Transform (comprised of Laplacian Pyramidal Filter and Steerable Filter) to enhance ...Steerable filter is applied at ...
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Online Full Text
... Fig. 2 shows the process of the development of the multiresolution multidirectional transforms in the image processing. It is clear that wavelet is one of the most used because its stability of processing images. The ...
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Multi-Channel Image Noise Filter based on PCNN
... median filter [23] or its multi-channel extensions, ...median filter [19] and the basic vector directional filter [21], are unable to adapt their behavior to varying noise and signal ...
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Transversal directional filters for channel combining
... on directional filters has been presented along with a synthesis ...single filter characteristic, the designed combiner has no interaction between the two ...the filter, device with non-uniform Q ...
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Improved Accuracy Distribution Localization in Wireless Sensor Networks
... An omni-directional antenna is a class of antenna that radiates energy radio waves uniformly in all directions are used to create hot spots by transmitting a signal over a wide area in all directions or receiving ...
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Improved Directional Perturbation Algorithm for Collaborative Beamforming
... The directional perturbation solution is one of effective ways, in which a directional perturbation factor is used to accelerate convergence so that the received signal strength (RSS) can reach a certain ...
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Demosaicking with two-dimensional continuous 3 × 3 order hidden Markov model
... Digital imaging devices find a broad range of applica- tions, particularly in digital cameras, surveillance de- vices, and mobile phones [1–5]. Every pixel must consist of three independent primary color components: red, ...
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Transversal directional filters for channel combining
... couplings. For this lossless design, we used PEC for conductors. The S parameters of each section were then put in ADS and connected by transmission lines. The result of this combined EM and circuit simulation is given ...
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A Novel Approach for Speckle Reduction and Enhancement of Ultrasound Images
... Multistage Filter has a PSNR ...Multistage Filter provides better smoothing (as PSNR value is high), less distortion (as IQI near to unity), lower Speckle content (ENL value is high) and good contrast (as ...
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Directional pattern synthesis in circular arrays of directional antennas
... It was shown by Longstaff, Chow and Davies (1) that the far field directional pattern of a continuous circular array in the horizontal plane can be analysed in terms of spatial harmonics[r] ...
230
Borehole radar trial in Borehole 7A, Sellafield, Cumbria, UK. Topical Report, Nuclear Science and Technology, 1995. EUR 15974 EN
... Figure 6-33 Radar map from Run 6 and 9, 60 MHz omni-directional survey 700.00 800.00 mbRT after the application of a moving average filter to the data after trace equalisation and static[r] ...
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Evaluation of sensor, environment and operational factors impacting the use of multiple sensor constellations for long term resource monitoring
... Abbreviations ANOVA ANalysis Of VAriance ASD Analytical Spectral Devices BRDF Bi-directional Reflectance Distribution Function BRF Bi-directional Reflectance Factor BTDF Bi-directional T[r] ...
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Directional versus Omni Directional Antennas for UWB Imaging
... be directional and small in size. This paper presents a modified directional patch antenna design and fabrication which was used in real breast cancer detection experiments using breast ...
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