OSU Vision Lab

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Image Coding and Analysis Lab
Data compression, image analysis, human visual system models, and natural scenes

007 Engineering South
School of Electrical and Computer Engineering
Oklahoma State University
Stillwater, OK 74078 USA
Phone: (405) 744-7314

Projects

Image Quality Assessment

o	MAD: The Most Apparent Distortion: A Dual-Strategy for Image Quality Assessment
o	VSNR: A Wavelet-Based Visual Signal-to-Noise Ratio
o	Visual Quality of Images Containing Multiple Distortion Types

Selected Publications

E. C. Larson and D. M. Chandler, "The Most Apparent Distortion: A Dual Strategy for Full Reference Image Quality," Proc. SPIE Image Quality and System Performance, January 2009.
D. M. Chandler and S. S. Hemami, "VSNR: A Wavelet-Based Visual Signal-to-Noise Ratio for Natural Images," IEEE Transactions on Image Processing, 16, 2007.
D. M. Chandler, K. H. Lim, S. S. Hemami, "Effects of Spatial Correlations and Global Precedence on the Visual Fidelity of Distorted Images," Proc. Human Vision and Electronic Imaging 2006, San Jose, CA, January 2006.

Region-of-Interest Estimation and Main Subject Detection

o	Adaptive Feature Selection for Multilevel ROI Estimation and Main-Subject Detection
o	Relations Between ROIs and Image Quality
o	Relations Between Object Properties and Perceived Importance

Selected Publications

S. Pinneli and D. M. Chandler, "Predicting the Perceived Interest of Objects in Images," Proc. Intl. Conf. on Image Processing (ICIP), October 2008.
E. C. Larson and D. M. Chandler, "Unveiling Relationships Between Regions of Interest and Image Fidelity Metrics," Proc. SPIE Visual Communications and Image Processing 2008, San Jose, CA, January 2008.
V. Kadiyala, S. Pinneli, E. C. Larson, and D. M. Chandler, "Quantifying the Perceived Interest of Objects in Images: Effects of Size, Location, Blur, and Contrast," Proc. Human Vision and Electronic Imaging 2008, San Jose, CA, January 2008.

Image Coding and Processing

o	DCQ: Dynamic Contrast-Based Quantization
o	Visually Lossless Compression of Medical Images
o	Spatially-Adaptive Compression Based on Visual Masking

Selected Publications

D. M. Chandler, S. S. Hemami, "Contrast-based Quantization for Lossy Wavelet Image Compression," IEEE Transactions on Image Processing, 14, 2005.
D. M. Chandler, N. L. Dykes, and S. S. Hemami, "Visually Lossless Compression of Digitized Radiographs based on Contrast Sensitivity and Visual Masking," Proc. Medical Imaging 2005, San Diego, CA, 2005.
M. G. Gaubatz, D. M. Chandler, and S. S. Hemami, "Spatially-Selective Quantization and Coding for Wavelet-Based Image Compression," Proc. IEEE Int. Conf. on Acoustics, Speech, and Signal Processing, Philadelphia, PA, March 2005.

Visual Coding, Psychophysics, and Natural Scene Statistics

o	Entropy and Mutual Information in the Power and Phase in Natural Scenes
o	Estimates of the Information Content in Natural Scenes
o	Visual Masking and Summation in Natural Images
o	Response Normalization in Visual Neurons

Selected Publications

D. M. Chandler and D. J. Field, "Estimates of the Information Content and Dimensionality of Natural Scenes from Proximity Distributions," Journal of the Optical Society of America A, 24, 2007.
D. M. Chandler, S. S. Hemami, "Effects of Natural Images on the Detectability of Simple and Compound Wavelet Subband Quantization Distortions," Journal of the Optical Society of America A, 20, 2003.
D. M. Chandler and D. J. Field, "How Much Information is Carried by the Power and Phase Spectra of Natural Scenes?" Optical Society of America Fall Vision Meeting 2007, Berkeley, CA, 2007.
D. J. Graham, D. M. Chandler, and D. J. Field, "Can the theory of whitening explain the center-surround properties of retinal ganglion cell receptive fields?" Vision Research, 46, 2006. [PDF]