Evaluation of a human-vision-system-based image fidelity metric for image compression

Niranjan Avadhanam; V. Ralph Algazi

doi:10.1117/12.365869

18 October 1999 Evaluation of a human-vision-system-based image fidelity metric for image compression

Niranjan Avadhanam, V. Ralph Algazi

Proceedings Volume 3808, Applications of Digital Image Processing XXII; (1999) https://doi.org/10.1117/12.365869
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Conventional mean squared error based methods for objective image quality assessment are not well correlated with human evaluation. The design of better objective measures of quality has attracted a lot of attention and several image quality metrics based explicitly on the properties of the Human Visual System (HVS) have been proposed in recent years. However, only in a few cases has the performance of such metrics been demonstrated on real images. In accounting for visual masking, all of these metrics assume that the multiple channels mediating visual perception are independent of each other. Recent neuroscience findings and psychophysical experiments have established that there is interaction across the channels and that such interactions are important for visual masking. In this work, we propose the Picture Distortion Metric (PDM) which integrates these new visual masking properties, and we evaluate its performance for image coding applications. We evaluate the performance at medium to high range of quality to predict subjective scores on a 0 - 10 numerical scale, and on a wide range of quality for the 1 - 5 CCIR impairment scale.

Citation Download Citation

Niranjan Avadhanam and V. Ralph Algazi "Evaluation of a human-vision-system-based image fidelity metric for image compression", Proc. SPIE 3808, Applications of Digital Image Processing XXII, (18 October 1999); https://doi.org/10.1117/12.365869

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