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Masking-based Reinforced Edges for Blur Images
We present an unsharp masking technique which applies two parameters α and β. We assume an original image is considered to be blurred due to low pass ...

Reinforced Edges by Masking -
Reinforced Edges by Masking. Seongsu ... Masking methods are widely used to make an image clear. ... (1) Obtain blurred image by low pass filter. ... Y. Wang, Q. Chen, and B. Zhang, “Image enhancement based on equal area dualistic sub.

Antialiasing Recovery - Hugues Hoppe
... mapping, gamma correction, histogram equalization, bilateral filters, unsharp masking, and .... based search for jagged edge patterns in the raster image. These areas are ..... noise in uniform image regions without blurring strong bound - aries. ... misidentified as features and can even be reinforced with tech- niques like ...

Full Text
Jan 29, 2013 ... running watermark extraction algorithms in DCT based method. These filters are based .... of a blurred image. ... image [1]. Unsharp masking produces an edge image ..... watermarked and watermarked part by reinforcement.

LCIS: A Boundary Hierarchy For Detail-Preserving Contrast Reduction
curvature image simplifier (LCIS), a partial differential equation inspired by .... At its largest scale, the linear filter hierarchy is a blurred wash from black to white .... edge-preserving and its smoothing abilities are self-reinforcing, ..... det1 det2 base wcolor. Figure 8: Detail-preserving contrast reduction method using an.

Image Enhancement Using the Median and the - Semantic Scholar
Enhancement and noise cleaning algorithms based on local medians and interquartile ... pattern recognition decisions by reinforcing the ability of the human eye to detect .... If t is well chosen, it may not blur edges as much as Nl. Algorithm ..... R. T. Gray, D. C. McCaughy, and B. R. Hunt, Median masking technique for the ...

Enhancement of X-ray Fluoroscopy Image Sequences using - DiVA
Mar 7, 2006 ... An algorithm based on recursive filtering, for temporal noise suppression ... The result is a noise reduced image sequence that shows no blurring effects upon motion. ...... The contrast reinforcement is too drastic and the image gets to dark. ... The present edge enhancement is done with unsharp masking.

Masking and color inheritance along the apparent motion path
Jul 30, 2012 ... Apparent motion masking depended on color similarity between target and inducers. .... to test image-level interactions (Hidaka et al., 2011;.

Image-based Descriptors for Snail Classification by Species
Nov 11, 2014 ... Image-based Descriptors for Snail Classification by Species ... of the workload, these workers had to be hired each year, and reinforced for peaks in .... The image acquisition is performed at a fast shutter speed to minimize motion blur due to the moving conveyor. ... Perimeter=sum(sum(edge(Mask,'log',0))) ...

Adaptation to interocular differences in blur - University of Nevada
May 31, 2013 ... Adaptation to a blurred image causes a physically focused image to .... custom algorithms based on convolving the images with point spread ...

N. Costen, D. Parker and I. Craw 'Spatial content and spatial
with quantised images is reinforced by internal masking from pixelisation. .... quantised and Fourier-filtered images the explanations appear to be based on uncon— strained ... both Fourier low—pass filtering and Gaussian blurring were performed. ...... structured noise caused by the noticeable edges of the blocked pixels.

typically preferentially elicits responses from stimuli they see - NCBI
Feb 24, 1992 ... was presented only after moving images learned the discrimination very ... eralization tests showed that the discrimination performance was based on visual features of .... Masking noise was provided by a .... contingency between pecks and reinforcement ..... sharp edges between objects or pigeon's shape.

Sep 15, 1998 ... [571. ABSTRACT. X-ray masking apparatus includes a frame having a sup- ... material, removing a portion of the front layer of reinforcing material opposite the .... patterned absorber on the membrane in which the edge reinforcement has a .... contribute to blurring of the image of a dust particle. Another ...

Download as a PDF - CiteSeerX
The ant-based approach is compared to a more traditional Hough-based solution .... 5 illustrates the natural metaphor underlying AntPX: the edge image under analysis ... The second preprocessing step consists in the generation of a mask that .... upcoming ants, in a sort of distributed reinforcement learning process [17] in ...

1) Title of the paper - IRCCyN
Jul 5, 2005 ... A robust image watermarking technique based on quantization noise .... sensitivity is weak on the image edges, smooth areas are very sensitive to vari- ... sented better detection results than the proposed HVS based mask. ..... hill' respectively attacked by a 3×3 blurring, a 2 degrees rotation, a q=40% JPEG.

An Introduction to Super-Resolution Text - Faculté Polytechnique de
for a case study, we describe a novel camera-based text resolution en- hancement ... from one (or more) low-resolution (LR), possibly noisy and blurred, image(s) of ..... Chiang and Boult [16] fuse only the edges of each warped text frame into a .... extended IBP reconstruction was used, reinforced by the evaluation of the dif-.

Photometric Image Processing for High Dynamic Range Displays
to this new class of devices for reproducing photometrically accurate images. ..... Ray Tube (CRT), Liquid Crystal Display (LCD), and projector-based displays. ..... Scene contrast boundaries above this threshold appear blurry ... of the boundary, obscuring the visibility of the edge and details within a few degrees of ...

From low level perception to high level perception, a coherent - Irisa
visual ability to extract significant images relations from lower level primitive image features ... and edge-linking. .... Masking is the strongest between stimuli located in the same perceptual channel or in ... coordinates) undergo a reinforcement based on the color subbands of the first crown. .... C blurred by a gaussian filter.

PDF(2323K) - Wiley Online Library
[3] Through‐the‐wall radar images the targets behind the wall by transmitting ... beam former, subspace based method and linear inverse scattering algorithm.

Perceptual Image and Video Quality - Department of Computer
as part of certain block-based compression operations such as JPEG, MPEG, and ... transitions in a signal such as high contrast edges, commonly introduced ... Blurring is the loss of sharpness and spatial detail in images and could be .... the behavior observed in human visual system, thus reinforcing the “efficient coding”.

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