Works (24)

Updated: April 4th, 2024 23:06

2015 conference paper

Learning rule for associative memory in recurrent neural networks

2015 international joint conference on neural networks (ijcnn).

By: T. Jacob n & W. Snyder n

TL;DR: A new learning rule for intralayer connections in neural networks is presented, based on Hebbian learning principles and derived from information theoretic considerations, which is shown to have associative memory like properties. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2014 conference paper

A human factors study of graphical passwords using biometrics

Pattern recognition, gcpr 2014, 8753, 464–475.

By: B. Riggan, W. Snyder, X. Wang & J. Feng

Source: NC State University Libraries
Added: August 6, 2018

2013 conference paper

Panorama creation using a team of robots

2013 IEEE Workshop on Robot Vision (WORV), 108–113.

By: Y. Huang n & W. Snyder n

TL;DR: The image processing required to take a number of views and construct a single panorama which provides a sense of a 3-D environment to the operator who finds it easy to comprehend the environment and to control the team using something as simple as a joystick. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2011 journal article

Maximum likelihood autocalibration

IMAGE AND VISION COMPUTING, 29(10), 653–665.

By: S. Heinrich n, W. Snyder n & J. Frahm*

author keywords: Autocalibration; Self-calibration; Maximum likelihood; Absolute dual quadric; Structure from motion
TL;DR: This paper proposes a maximum likelihood objective and shows that it can be implemented robustly and efficiently and often provides substantially greater accuracy, especially when there are fewer views or greater noise. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2010 article

Concurrent visual multiple lane detection for autonomous vehicles

2010 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA), pp. 2416–2422.

By: R. Gupta*, W. Snyder* & W. Pitts

TL;DR: This paper not only adapts predictive control in the image plane, but also detects multiple lanes in the scene concurrently in the form of multiple peaks in the accumulator, which is robust to shadows and invariant to color, texture, and width of the road. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

Global registration of overlapping images using accumulative image features

Pattern Recognition Letters, 31(2), 112–118.

By: K. Krish n, S. Heinrich n, W. Snyder n, H. Cakir n & S. Khorram n

author keywords: Image registration; Feature matching; Accumulator-based methods; Feature correspondence; Evidence accumulation
TL;DR: A new feature-based image registration technique which registers images by finding rotation- and scale-invariant features and matching them using a novel feature matching algorithm based on an evidence accumulation process reminiscent of the generalized Hough transform is introduced. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref
Added: August 6, 2018

2006 journal article

Binary tree-based generic demosaicking algorithm for multispectral filter arrays

IEEE TRANSACTIONS ON IMAGE PROCESSING, 15(11), 3550–3558.

By: L. Miao*, H. Qi*, R. Ramanath* & W. Snyder n

author keywords: binary tree; color filter array (CFA); demosaicking; edge-sensing interpolation; mosaicking; multispectral filter array (MSFA); spectral correlation
MeSH headings : Algorithms; Color; Colorimetry / methods; Filtration / methods; Image Enhancement / methods; Image Interpretation, Computer-Assisted / methods; Information Storage and Retrieval / methods
TL;DR: Experimental results support that MSFA technique can be applied to multispectral imaging with unique advantages, and a binary tree based generic demosaicking method is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2004 journal article

A comparative analysis of structural risk minimization by support vector machines and nearest neighbor rule

PATTERN RECOGNITION LETTERS, 25(1), 63–71.

By: B. Karacali*, R. Ramanath n & W. Snyder n

author keywords: nearest neighbor; structural risk minimization; support vector machines; kernel operator; prototype selection
TL;DR: Experimental results indicate that the NNSRM formulation is not only computationally less expensive, but also much more robust to varying data representations than SVMs. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Infrared imaging learns from camera industry

Laser Focus World, 40(7), 78-.

By: H. Qi & W. Snyder

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Noise reduction in surface reconstruction from a given gradient field

INTERNATIONAL JOURNAL OF COMPUTER VISION, 60(1), 25–44.

By: B. Karacali* & W. Snyder*

author keywords: surface reconstruction; gradient field; noise reduction; thresholding; projection; gradient space; orthonormal representation; multiscale analysis
TL;DR: A gradient space technique for noise reduction in surfaces reconstructed from a noisy gradient field and the experiments suggest that the additive model remains viable after the nonlinear photometric stereo operation to provide accurate noise removal. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Spectral spaces and color spaces

COLOR RESEARCH AND APPLICATION, 29(1), 29–37.

By: R. Ramanath n, R. Kuehni n, W. Snyder n & D. Hinks n

author keywords: color spaces; metamerism; Munsell system; spectral spaces; spectrophotometry
TL;DR: This article compares color spaces, perceptual or based on dimensionality reduction using color matching functions and additional operations (uniform color space), to spectral spaces derived with a variety ofdimensionality reduction techniques. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Adaptive demosaicking

JOURNAL OF ELECTRONIC IMAGING, 12(4), 633–642.

By: R. Ramanath n & W. Snyder

TL;DR: This work proposes an adaptive demosaicking technique in the framework of bilateral filtering that provides a means to denoise, sharpen, and demosaic the image simultaneously and is run on synthetic images and real-world images for comparative purposes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Reconstructing discontinuous surfaces from a given gradient field using partial integrability

COMPUTER VISION AND IMAGE UNDERSTANDING, 92(1), 78–111.

By: B. Karacali* & W. Snyder n

author keywords: surface reconstruction; integrability; gradient fields; gradient space; vector space methods; projection; feasible subspace
TL;DR: This paper formalizes a vector space projection technique to reconstruct a surface with a uniformly integrable gradient field that corresponds to the minimum norm solution in the gradient space over discrete imaging settings and generalizes it to reconstruct Minimum norm solution surfaces with partially integrability gradient fields. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2002 article

Demosaicking as a bilateral filtering process

IMAGE PROCESSING: ALGORITHMS AND SYSTEMS, Vol. 4667, pp. 236–244.

By: R. Ramanath n & W. Snyder n

author keywords: bilateral filtering; color filter array; demosaicing; demosaicking; digital still camera; interpolation
TL;DR: This paper approaches the process of demosaicking as a bilateral filtering process which is a combination of spatial domain filtering and filtering based on similarity measures, and implemented a variety of kernel combinations while performing demosaicked. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Demosaicking methods for Bayer color arrays

JOURNAL OF ELECTRONIC IMAGING, 11(3), 306–315.

By: R. Ramanath n, W. Snyder n, G. Bilbro n & W. Sander*

TL;DR: This paper introduces and compares a few commonly used demosaicking methods using error metrics like mean squared error in the RGB color space and perceivederror in the CIELAB color space. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2002 chapter

Image comparison measure for digital still color cameras

In 2002 International Conference on Image Processing: proceedings: ICIP: 22-25 September, 2002, Rochester Riverside Convention Center, Rochester, New York, USA: Vol. 1 (Vol. 1, pp. 629–632). Piscataway, NJ: IEEE.

By: A. Ramanath, B. Snyder & C. Hinks

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Efficient approach to segment man-made targets from unmanned aerial vehicle imagery

Optical Engineering (Redondo Beach, Calif.), 39(5), 1267–1274.

By: H. Qi, W. Snyder & D. Marchette

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Increasing the effective resolution of thermal infrared images - An algorithm based on mean-field annealing that also removes noise and preserves image

IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE, 19(3), 63–70.

By: W. Snyder n, H. Qi*, R. Elliott, J. Head & C. Wang

MeSH headings : Algorithms; Computer Simulation; Diagnostic Imaging / methods; Diagnostic Imaging / statistics & numerical data; Female; Humans; Image Processing, Computer-Assisted / methods; Image Processing, Computer-Assisted / statistics & numerical data; Infrared Rays; Models, Biological; Thermography
TL;DR: A maximum a posteriori probability (MAP) image restoration philosophy is proposed to solve the problem of resolution in thermal infrared imaging. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 patent

Systems and methods for using diffraction patterns to determine radiation intensity values for areas between and along adjacent sensors of compound sensor arrays

Washington, DC: U.S. Patent and Trademark Office.

By: G. Bilbro, W. Snyder & A. Zilic

Source: NC State University Libraries
Added: August 6, 2018

1999 patent

Compound image sensor array having staggered array of tapered optical fiber bundles

Washington, DC: U.S. Patent and Trademark Office.

By: G. Bilbro, W. Snyder & A. Zilic

Source: NC State University Libraries
Added: August 6, 2018

1999 article

Content-based image retrieval in picture archiving and communications systems

Qi, H. R., & Snyder, W. E. (1999, May). JOURNAL OF DIGITAL IMAGING, Vol. 12, pp. 81–83.

By: H. Qi n & W. Snyder n

MeSH headings : Consultants; Databases as Topic; Diagnosis, Computer-Assisted; Diagnostic Imaging; Humans; Information Storage and Retrieval; Mammography; Man-Machine Systems; Pattern Recognition, Automated; Radiology Information Systems; Reference Values; User-Computer Interface
TL;DR: Content-based image retrieval can perform like a consultant in emergencies when radiologists are not available, and it is shown that content-based retrieval is a more natural approach to man-machine communication. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Discontinuity-preserving vector smoothing of multivariate MR images using vector mean field annealing

JOURNAL OF MATHEMATICAL IMAGING AND VISION, 9(3), 199–212.

By: Y. Han n, W. Snyder n & G. Bilbro n

author keywords: magnetic resonance images (MRI); shading artifacts; piecewise constant image restoration; Bayesian image restoration; mean field annealing (MFA); multivariate images; vector-valued images; magnitude; ratio; angle
TL;DR: Mean Field Annealing (MFA) is used to find restorations that are superior to those obtained by previous multivariate approaches when shading artifacts near the MRI antenna are significant. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Left-ventricle boundary detection from nuclear medicine images

JOURNAL OF DIGITAL IMAGING, 11(1), 10–20.

By: X. Dai n, W. Snyder n, G. Bilbro n, R. Williams n & R. Cowan n

author keywords: cardiac nuclear medicine; ejection fraction; image segmentation; left ventricle; boundary detection; automated
MeSH headings : Heart Ventricles / diagnostic imaging; Humans; Image Processing, Computer-Assisted; Radionuclide Imaging; Stroke Volume; Ventricular Function, Left
TL;DR: A new algorithm for segmentation of nuclear medicine images to detect the left-ventricle (LV) boundary that seems to perform quite well in comparison to other automated methods that have been tested because of its ability to handle the problems of both low signal-to-noise ratios (SNR) as well as low image contrast. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Performance evaluation of filtered backprojection reconstruction and iterative reconstruction methods for PET images

COMPUTERS IN BIOLOGY AND MEDICINE, 28(1), 13–25.

By: C. Wang, W. Snyder*, G. Bilbro* & P. Santago

author keywords: image reconstruction; performance evaluation; PET imaging; bias and variance; mean square error
MeSH headings : Algorithms; Artifacts; Bias; Humans; Image Enhancement / instrumentation; Image Processing, Computer-Assisted / instrumentation; Phantoms, Imaging; Tomography, Emission-Computed / instrumentation
TL;DR: The experiment showed that the MAP algorithm generated superior image quality in terms of the bias, the variance, and the average mean squared error (MSE) measures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

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