Filters








161 Hits in 11.8 sec

Feature-Preserving Image Restoration from Adaptive Triangular Meshes [chapter]

Ke Liu, Ming Xu, Zeyun Yu
2015 Lecture Notes in Computer Science  
The triangulation of images has become an active research area in recent years for its compressive representation and ease of image processing and visualization.  ...  The existing methods such as linear interpolation, least-square interpolation, or interpolation based on radial basis functions (RBFs) work to some extent, but often yield blurred features (edges, corners  ...  A halftoning-based sampling strategy is adopted to provide feature-sensitive and adaptive point distributions in the image domain.  ... 
doi:10.1007/978-3-319-16631-5_3 fatcat:blvwb3i56vfnnmn3w6yle23oqm

Adaptive Mesh Representation and Restoration of Biomedical Images [article]

Ke Liu, Ming Xu, Zeyun Yu
2014 arXiv   pre-print
The triangulation of images has become an active research area in recent years for its compressive representation and ease of image processing and visualization.  ...  The existing methods such as linear interpolation, least-square interpolation, or interpolation based on radial basis functions (RBFs) work to some extent, but often yield blurred features (edges, corners  ...  A halftoning-based sampling strategy is adopted to provide feature-sensitive and adaptive point distributions in the image domain.  ... 
arXiv:1406.7062v1 fatcat:hjvn6a22kzgl5pd4p2ksywidum

Nonlinear resampling for edge preserving moire´ suppression

Dimitri Van De Ville
2000 Journal of Electronic Imaging (JEI)  
A novel technique is presented to adaptively resample an image on the screen lattice using a local estimate of the risk of aliasing.  ...  Printing applications using classical halftoning need to resample the original image to a screen lattice. This resampling can cause undesirable moiré artifacts in the screened image.  ...  Fig. 1 1 Example of simulated gravure printing halftone. ͑9͒Figure 3 3 For the type of gravure printing we consider, the values of a and b are 0.2 and 0.12 mm.  ... 
doi:10.1117/1.1289535 fatcat:c6kntlto7fcm7j7fwpjkcz754q

A fast approach for accurate content-adaptive mesh generation

Yongyi Yang, M.N. Wernick, J.G. Brankov
2003 IEEE Transactions on Image Processing  
A key issue in mesh modeling is how to generate a mesh structure that well represents an image by adapting to its content.  ...  The proposed algorithm is noniterative, fast, and easy to implement.  ...  ., for providing the program code for Garcia's method.  ... 
doi:10.1109/tip.2003.812757 pmid:18237961 fatcat:3ri6fn4wpvb5ljpjfnwuihaei4

Power-scalable multi-layer halftone video display for electronic paper

Chao-Yung Hsu, Chun-Shien Lu, Soo-Chang Pei
2008 2008 IEEE International Conference on Multimedia and Expo  
Video halftoning is a key technology for use in the new display device, electronic paper (e-paper).  ...  In this paper, we propose a power-scalable multi-layer halftone video display scheme, which is composed of layer coding, non-uniform sampling, and icker rate reduction.  ...  complex image perceptual hashing [8] or computationally uncomplex interpolation/extrapolation is adopted to choose a similar video frame from a previously decoded halftone video to accomplish insertion  ... 
doi:10.1109/icme.2008.4607717 dblp:conf/icmcs/HsuLP08 fatcat:ordjyj26wvcqfogawpve7wkhmy

Least-squares model-based halftoning

Thrasyvoulos N. Pappas, David L. Neuhoff, Bernice E. Rogowitz
1992 Human Vision, Visual Processing, and Digital Display III  
A least-squares model-based (LSMB) approach to digital halftoning is proposed. It exploits both a printer model and a model for visual perception.  ...  It attempts to produce an optimal halftoned reproduction, by minimizing the squared error between the response of the cascade of the printer and visual models to the binary image and the response of the  ...  Bilinear and spline interpolation can produce an image of any size.  ... 
doi:10.1117/12.135965 fatcat:knpqspesgjgk3n3jtobdd2p3aq

Least-squares model-based halftoning

T.N. Pappas, D.L. Neuhoff
1999 IEEE Transactions on Image Processing  
A least-squares model-based (LSMB) approach to digital halftoning is proposed. It exploits both a printer model and a model for visual perception.  ...  It attempts to produce an optimal halftoned reproduction, by minimizing the squared error between the response of the cascade of the printer and visual models to the binary image and the response of the  ...  Bilinear and spline interpolation can produce an image of any size.  ... 
doi:10.1109/83.777090 pmid:18267524 fatcat:esdq6ernlfgqhmdxf5efsamdam

Subject index

1999 IEEE Transactions on Image Processing  
., + , T-IP Sep 99 1282-1292 image restoration, Bayesian and regularization methods for hyperparameter estim. Molina, R., + , T-IP Feb 99 231-246 inverse halftoning using wavelets.  ...  Xin Wang, T-IP Jul 99 993-996 halftoning error diffusion filter, phase response. Kumar, A., + , T-IP Sep 99 1282-1292 image interpolation using neural networks.  ... 
doi:10.1109/tip.1999.806633 fatcat:wl55kzilqzd33dlz6kmq3cljdy

Using vector quantization for image processing

P.C. Cosman, K.L. Oehler, E.A. Riskin, R.M. Gray
1993 Proceedings of the IEEE  
Recent work has used vector quantization both to simplify image processing tasks-such as enhancement, classification, halftoning, and edge detectio-nd to reduce the computational complexiry by performing  ...  Compression has traditionally been done with little regard for image processing operations that may precede or follow the compression step.  ...  Ning, and J. Goldschneider for their helpful cooperation and contributions to this work.  ... 
doi:10.1109/5.237540 fatcat:kxchk2ghinf6tluqcdqiq5xokq

The mathematics of halftoning

R. L. Adler, B. P. Kitchens, M. Martens, C. P. Tresser, C. W. Wu
2003 IBM Journal of Research and Development  
This paper describes some mathematical aspects of halftoning in digital printing. Halftoning is the technique of rendering a continuous range of colors using only a few discrete ones.  ...  There are two major classes of methods: dithering and error diffusion. Some discussion is presented concerning the method of dithering, but the main emphasis is on error diffusion.  ...  , and then interpolating sets of weights for the remaining gray levels.  ... 
doi:10.1147/rd.471.0005 fatcat:tf4ec62oufhxlagbt2wmvyuitu

DSP utilization in digital color printing

E. Saber, S. Dianat, L.K. Mestha, P.Y. Li
2005 IEEE Signal Processing Magazine  
raster output scanner (ROS) for imaging and printing.  ...  Let f(ū, d, tone) denote the toner area coverage for a halftone image of tone using ū ∈ R m as the settings for its m actuators, with r d distinct disturbances taking on values d ∈ R r d .  ... 
doi:10.1109/msp.2005.1458303 fatcat:foiugnbpova4bgxtmlufb6fjna

Journal of real-time image processing: fourth issue of volume 14

Matthias F. Carlsohn, Nasser Kehtarnavaz
2018 Journal of Real-Time Image Processing  
The experimental results are presented on synthetic data, on real images and on medical images in the context of aorta vessel segmentation in computed tomography (CT) images.  ...  The components of adaptive optics consist of a University of Texas at Dallas, Richardson, TX, USA camera for recording aberrations, a corrective mechanism and a real-time controller for processing images  ... 
doi:10.1007/s11554-018-0771-2 fatcat:5wihdxwxenel7igc6pmswe6k7u

Least-squares spline resampling to a hexagonal lattice

Dimitri Van De Ville, Wilfried Philips, Ignace Lemahieu
2002 Signal processing. Image communication  
This paper first introduces a spline model for different orders, both for orthogonal and hexagonal lattices.  ...  Experimental results for a printing application demonstrate the feasibility of the proposed method and are compared against the standard approach.  ...  Typical interpolation functions are not adapted to the characteristics of the target lattice.  ... 
doi:10.1016/s0923-5965(02)00009-7 fatcat:mckucyvbgzeoxmwn4rnn7agfn4

Two-Stage Interpolation Algorithm Based on Fuzzy Logics and Edges Features for Image Zooming

Hsiang-Chieh Chen, Wen-June Wang
2009 EURASIP Journal on Advances in Signal Processing  
This work presents an innovative two-stage interpolation algorithm for image resolution enhancement and zooming applications.  ...  The desired high-resolution images are obtained via two interpolative stages.  ...  Please refer to http://www.ee.ncu.edu.tw/∼fuzzylab/ExpResults/ (National Central University) for downloading the results and related materials.  ... 
doi:10.1155/2009/372180 fatcat:ch4umcjicnevhkal4hgeyps5em

Color imaging for multimedia

G. Sharma, M.J. Vrhel, H.J. Trussell
1998 Proceedings of the IEEE  
However, the requirements for accurate color reproduction and for the preservation of this information across display and print devices that have very different characteristics and may be geographically  ...  To a significant degree, multimedia applications derive their effectiveness from the use of color graphics, images, and video.  ...  Balasubramanian for his helpful suggestions and pointers and J. Stinehour for making available the data used in Figs. 5 and 6.  ... 
doi:10.1109/5.687831 fatcat:akuuxpn4bvbipaecsuicahc5ji
« Previous Showing results 1 — 15 out of 161 results