Wesley E. Snyder

Works (24)

Updated: April 4th, 2024 23:06

2015 article

Learning rule for associative memory in recurrent neural networks

Jacob, T., & Snyder, W. (2015, July 1).

By: T. Jacob n & W. Snyder n

topics (OpenAlex): Neural Networks and Applications; Neural dynamics and brain function; Cognitive Science and Education Research
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 article

Panorama creation using a team of robots

Huang, N. Y., & Snyder, W. (2013, January 1).

By: N. Huang n & W. Snyder n

topics (OpenAlex): Advanced Vision and Imaging; Robotics and Sensor-Based Localization; Advanced Image and Video Retrieval Techniques
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 article

Maximum likelihood autocalibration

Heinrich, S. B., Snyder, W. E., & Frahm, J.-M. (2011, July 25). Image and Vision Computing.

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

author keywords: Autocalibration; Self-calibration; Maximum likelihood; Absolute dual quadric; Structure from motion
topics (OpenAlex): Advanced Vision and Imaging; Optical measurement and interference techniques; Robotics and Sensor-Based Localization
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)
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Source: Web Of Science
Added: August 6, 2018

2010 article

Concurrent visual multiple lane detection for autonomous vehicles

Gupta, R. A., Snyder, W., & Pitts, W. S. (2010, May 1). 2010 Ieee International Conference on Robotics and Automation (Icra), pp. 2416–2422.

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

topics (OpenAlex): Autonomous Vehicle Technology and Safety; Advanced Vision and Imaging; Video Surveillance and Tracking Methods
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)
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11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2009 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
topics (OpenAlex): Image and Object Detection Techniques; Advanced Image and Video Retrieval Techniques; Image Retrieval and Classification Techniques
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)
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Sources: Web Of Science, Crossref
Added: August 6, 2018

2006 article

Binary Tree-based Generic Demosaicking Algorithm for Multispectral Filter Arrays

Miao, L., Qi, H., Ramanath, R., & Snyder, W. E. (2006, October 18). IEEE Transactions on Image Processing.

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
topics (OpenAlex): Advanced Image Fusion Techniques; Image and Signal Denoising Methods; Remote Sensing and Land Use
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)
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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 article

Noise Reduction in Surface Reconstruction from a Given Gradient Field

Karaçali, B., & Karaçali, B. (2004, May 13). International Journal of Computer Vision.

By: B. Karaçali * & B. Karaçali *

author keywords: surface reconstruction; gradient field; noise reduction; thresholding; projection; gradient space; orthonormal representation; multiscale analysis
topics (OpenAlex): Computer Graphics and Visualization Techniques; Advanced Vision and Imaging; Advanced Image Fusion Techniques
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)
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11. Sustainable Cities and Communities (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2003 article

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

Karaçalı, B., Ramanath, R., & Snyder, W. E. (2003, October 25). Pattern Recognition Letters.

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

author keywords: nearest neighbor; structural risk minimization; support vector machines; kernel operator; prototype selection
topics (OpenAlex): Machine Learning and Data Classification; Face and Expression Recognition; Machine Learning and Algorithms
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)
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Source: Web Of Science
Added: August 6, 2018

2003 article

Adaptive demosaicking

Ramanath, R. (2003, October 1). Journal of Electronic Imaging.

By: R. Ramanath n

topics (OpenAlex): Color Science and Applications; Image and Signal Denoising Methods; Image Enhancement Techniques
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)
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Source: Web Of Science
Added: August 6, 2018

2003 article

Reconstructing discontinuous surfaces from a given gradient field using partial integrability

Karaçalı, B., & Snyder, W. (2003, September 3). Computer Vision and Image Understanding.

By: B. Karaçalı * & W. Snyder n

author keywords: surface reconstruction; integrability; gradient fields; gradient space; vector space methods; projection; feasible subspace
topics (OpenAlex): Computer Graphics and Visualization Techniques; Advanced Numerical Analysis Techniques; 3D Shape Modeling and Analysis
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

2003 article

Spectral spaces and color spaces

Ramanath, R., Kuehni, R. G., Snyder, W. E., & Hinks, D. (2003, December 11). Color Research & Application.

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

author keywords: color spaces; metamerism; Munsell system; spectral spaces; spectrophotometry
topics (OpenAlex): Color Science and Applications; Color perception and design; Visual perception and processing mechanisms
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

2002 article

<title>Demosaicking as a bilateral filtering process</title>

Ramanath, R., & Snyder, W. E. (2002, May 23). Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE.

By: R. Ramanath n & W. Snyder n

author keywords: bilateral filtering; color filter array; demosaicing; demosaicking; digital still camera; interpolation
topics (OpenAlex): Image and Signal Denoising Methods; Advanced Image Fusion Techniques; Remote Sensing and Land Use
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)
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Source: Web Of Science
Added: August 6, 2018

2002 article

Demosaicking methods for Bayer color arrays

Ramanath, R., Snyder, W. E., Bilbro, G. L., & Sander, W. A. (2002, January 1). Journal of Electronic Imaging.

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

topics (OpenAlex): Color Science and Applications; Industrial Vision Systems and Defect Detection; Advanced Vision and Imaging
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)
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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 article

Increasing the effective resolution of thermal infrared images

Snyder, W. E., Qi, H., Elliott, R. L., Head, J. F., & Wang, C. X. (2000, January 1). IEEE Engineering in Medicine and Biology Magazine.

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
topics (OpenAlex): Infrared Thermography in Medicine; Thermography and Photoacoustic Techniques; Photoacoustic and Ultrasonic Imaging
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)
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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., & Snyder, W. E. (1999, May 1). Journal of Digital Imaging.

By: H. Qi* & 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
topics (OpenAlex): Image Retrieval and Classification Techniques; Advanced Image and Video Retrieval Techniques
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)
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Source: Web Of Science
Added: August 6, 2018

1998 article

Discontinuity-Preserving Vector Smoothing of Multivariate MR Images Using Vector Mean Field Annealing

Han, Y.-S. (1998, November 1). Journal of Mathematical Imaging and Vision.

By: Y. Han 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
topics (OpenAlex): Medical Imaging Techniques and Applications; Medical Image Segmentation Techniques; Advanced MRI Techniques and Applications
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)
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11. Sustainable Cities and Communities (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 article

Left-ventricle boundary detection from nuclear medicine images

Dai, X., Snyder, W. E., Bilbro, G. L., Williams, R., & Cowan, R. (1998, February 1). Journal of Digital Imaging.

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
topics (OpenAlex): Medical Image Segmentation Techniques; Radiomics and Machine Learning in Medical Imaging; AI in cancer detection
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)
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Source: Web Of Science
Added: August 6, 2018

1998 article

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

Wang, C. X., Snyder, W. E., Bilbro, G., & Santago, P. (1998, January 1). Computers in Biology and Medicine.

By: C. Wang*, W. Snyder n, G. Bilbro n & 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
topics (OpenAlex): Medical Imaging Techniques and Applications; Advanced X-ray and CT Imaging; Advanced MRI Techniques and Applications
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)
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Source: Web Of Science
Added: August 6, 2018

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