Contrast Perception and Modeling

contrast perception image   

We are studying the perception of contrast (threshold and suprathreshold) by normal and visually impaired observers. We developed a valid metric for contrast in complex images, which is now being widely used in simulation of image appearance and as a tool for image quality metrics. We are also studying the effects of observation conditions such as luminance, motion, and retinal location, as well as the effects of flanking patterns.


Miguel García-Pérez, Ph.D. Visiting Scientist

Russell Woods, Ph.D.

Alex Hwang, Ph.D.

Jae-Hyun Jung, Ph.D.

Past Postdoctoral Fellows

Andrew Haun, Ph.D.

Yitzhak Yitzhaky, Ph.D.

Past Grant Support

NIH, EY05957, "Model-Based Image Enhancement for the Visually Impaired"


Hwang AD and Peli E. Methods and systems for adjusting contrast in devices US Patent 10,755,673 B2 (Aug. 25, 2020) [PDF 1.75 MB]


Hwang AD, Peli E. (2016) Positive and negative polarity contrast sensitivity measuring app. Proc. of IS&T Human Vision and Electronic Imaging XXI, ed. Bernice E. Rogowitz, Thrasyvoulos N. Pappas, Huib de Ridder. 2016.
doi: 10.2352/ISSN.2470-1173.2016.16HVEI-122 [PDF 756KB]

Hwang AD, Peli E. (2016) A New Contrast Metric for Realistic Display-Performance. In: 2016 SID International Symposium. Digest of Technical Papers, 2016, 72-4; 983-986. [PDF 1.83 MB ]

Haun AM, Peli E. (2016) Blur adaptation, phase coherence, and contrast threshold. Submitted, PDF not yet available.

Haun AM, Peli E. (2015) Similar Sensitivity to Ladder Contours in Macular Degeneration Patients and Controls. PLoS ONE 10(7): e0128119. doi:10.1371/journal.pone.0128119 [PDF 612KB]

M.A. Garcia Perez, E. Peli (2014) The bisection point across variants of the task. Attention, Perception & Psychophysics. DOI 10.3758/s13414-014-0672-9 [PDF 1.55MB]

Haun AM, Peli E. (2013) Perceived contrast of complex images. Journal of Vision, 13(13):3, 1–21,, doi:10.1167/13.13.3. [PDF 2.05MB]

Haun AM, Peli E. (2013) Adaption to blurred and sharpened video. Journal of Vision, 3(8):12, 1-14,, doi:10.1167/13.8.12 PDF 959 KB

Sawides L, Dorronsoro C, Haun AM, Peli E, Marcos S. (2013) Using Pattern Classification to Measure Adaptation to the Orientation of High Order Aberrations. PLoS ONE, 2013, PLoS ONE 8(8): e70856. doi:10.1371/journal.pone.0070856, [PDF 3.00 MB] This paper is available online.

To L, Woods RL, Goldstein RB, Peli E. (2013) Psychophysical contrast calibration. Vision Research. 2013; 90(9): 15-24. DOI:10.1016/j.visres.2013.04.011 [ PDF 1.7 MB]

Haun A, Peli E. (2013) Is image quality a function of contrast perception? The Side-by-Side Developments at HVEI (Invited Paper), Proc. of SPIE-IS& Human Vision and Electronic Imaging XVIII, SPIE Vol. 8651 7865 ed. Bernice E. Rogowitz, Thrasyvoulos N. Pappas, Huib de Ridder. 8651-12. In press: [PDF 52 KB ]

Haun A, Peli E. (2012) Complexities of complex contrast. In Proceedings of SPIE-IS&T Electronic Imaging XVII, SPIE. In press, PDF not yet available

Haun AM, Woods RL, Peli E. (2012) Electronic magnification and perceived contrast of video. J. of Society for Information Display. [ PDF 1.0 MB]

Haun A, Peli E. (2011) Measuring the perceived contrast of natural images. SID Symposium Digest of Technical Papers, Session 24: Visual Perception (APV). Los Angeles, CA. May 15-20, 2011. SID 11 Digest pp. 302-304. [PDF 677 KB]

Haun A, Woods RL, Peli E. (2011) Perceived contrast of electronically magnified video. In: SPIE-IS&T Electronic Imaging, SPIE Vol. 7865 "Human Vision and Electronic Imaging XVI" ed. Bernice E. Rogowitz & Thrasyvoulos N. Pappas. 7865ON, 2011, doi10.1117/12.872614. [PDF 124 KB]

García-Pérez MA, Alcalá-Quintana R, Woods RL, Peli E. (2011) Psychometric functions for detection and discrimination with and without flankers. Attention, Perception & Psychophysics 73: 829-853 [PDF 7.99 KB ]

Yitzhaky Y, Peli E. (2005) Vision model based image foveation and motion estimation. Optical Engineering. 44(10), 107004 [PDF 588 KB]

Garcia-Perez MA, Giorgi RG, Woods RL, Peli E. (2005) Thresholds vary between spatial and temporal forced-choice paradigms: The case of lateral interactions in peripheral vision. Spatial Vision. 18(1): 99-127 [PDF 378 KB]

Giorgi RG, Soong GP, Woods RL, Peli E. (2004) Facilitation of contrast detection in near-peripheral vision. Vision Research, 44: 3193 - 3202. [PDF 444KB]

Nugent AK, Keswani RN, Woods RL, Peli E. (2003) Contour integration in peripheral vision reduces gradually with eccentricity. Vision Res 43: 2427-2437. [PDF 472 KB]

Yitzhaky Y, Peli E. (2003) A method for objective edge detection evaluation and detector parameter selection. IEEE Trans on Pattern Analysis and Machine Intelligence. 25: 1027-1033. [PDF 888 KB] [Additional Information PDF 480 KB]

Woods RL, Nugent AK, Peli E. (2002) Lateral interactions: size does matter. Vision Res, 42(6): 733-745. [PDF 948 KB]

Peli E, Geri G. (2001) Discrimination of wide-field images as a test of a peripheral-vision model. J Opt Soc Am A, 18(2): 294-301. [PDF (276 KB)]

Peli E. (2001) Contrast sensitivity function and image discrimination. J Opt Soc Am A, 18(2): 283-293. [PDF 1.0 MB]

Peli E. (2002) Feature detection algorithm based on a visual system model. Proceedings of the IEEE. 90: 78-93. [PDF 480KB]

Garcia-Perez MA, Peli E. (2001) Artifacts of cathode-ray tube displays for vision research. Spatial Vision, 14: 201-216. [PDF 119 KB]

Woods RL, Nugent AK, Peli E. (2000) Bandwidth affects visual lateral interactions. Invest Ophthalmol Vis Sci(ARVO Suppl.), 41: s803. [PDF 174 KB]

Garcia-Perez MA, Peli E. (1999) Lack of covariation of the effects of luminance and eccentricity on contrast sensitivity. Optom Vision Sci, 76(1): 63-67. [PDF 517 KB]

Garcia-Perez MA, Peli E. (1999) Imputation of Direction of Motion in one dimension. Journal of the Optical Society of America A 16: 1531-1540. [PDF 772 KB]

Peli E. (1997) In search of a contrast metric: matching the perceived contrast of Gabor patches at different phases and bandwidths. Vision Res, 37: 3217-3224. [PDF 738 KB]

Garcia-Perez MA, Peli E. (1997) The transition from DeVries-Rose to Weber's laws: comments on Rovamo, Mustonen and Núsúnen. Vision Research 37(18): 2573-2576. [PDF 424 KB]

Peli E, Arend L, Labianca AT. (1996) Contrast perception across changes in luminance and spatial frequency. Journal of the Optical Society of America A 13(10): 1953-1959. [PDF 252 KB]

Peli E. (1996) Test of a model of foveal vision by using simulations. Journal of the Optical Society of America A 13(6): 1131-1138. [PDF 822 KB]

Peli E. (1995) Suprathreshold contrast perception across differences in mean luminance: effects of stimulus size, dichoptic presentation, and length of adaptation. Journal of the Optical Society of America A 12(5): 817-823. [PDF 367 KB]

Peli E. (1995). Simulating normal and low vision In E. Peli (Ed.), Vision Models for Target Detection and Recognition - In Memory of Arthur Menendez (pp. 63-87). Singapore: World Scientific Publishing Co. [ PDF 4.71MB ]

Peli E, Arend LE, Young GM, Goldstein RB. (1993) Contrast sensitivity to patch stimuli: Effects of spatial bandwidth and temporal presentation. Spatial Vision 7(1): 1-14. [PDF 820 KB]

Peli E. (1992) Display nonlinearity in digital image processing for visual communications. Optical Engineering 31(11), 2374-2382 [PDF 1.6 MB]

Peli E. (1992) Perception and interpretation of high-pass filtered images. Optical Engineering 31(1), 74-81. [PDF 1.1 MB]

Peli E, Yang J, Goldstein RB. (1991) Image invariance with changes in size: the role of peripheral contrast thresholds. Journal of the Optical Society of America A 8(11): 1762-1774 [PDF 4.1 MB]

Peli E, Yang J, Goldstein RB, Reeves A (1991) Effect of luminance on suprathreshhold contrast perception. Journal of the Optical Society of America A 8(8): 1352-1359. [PDF 1.6 MB]

Peli E. (1991) Multiresolution, error convergence halftone algorithm. Journal of the Optical Society of America A 8(4): 625-636. [PDF 2.8 MB]

Peli E, Goldstein RB, Young GM, Trempe CL, Buzne SM. (1991) Image enhancement for the visually impaired: Simulations and experimental results. Investigative Ophthalmology and Visual Science 32: 2337-2350. [PDF 4.8 MB]

Peli E. (1990) Contrast in complex images. Journal of the Optical Society of America A 7(10): 2032-2040. [PDF 2.9 MB]

Click here to return home