Objective method and system for estimating perceived image...

Details Objective method and system for estimating perceived image... Objective method and system for estimating perceived image...

2006-07-18

2006-07-18

Mehta, Bhavesh M. (Department: 2625)

Image analysis

Image transformation or preprocessing

Fourier transform

C708S403000

Reexamination Certificate

active

07079704

ABSTRACT:
A method and system for estimating the quality of video data without gaining access to the source data, are configured to perform a Fast Fourier Transform (FFT) from at least some of the pixel values of the image in at least the horizontal direction, and at most, in the horizontal and vertical directions for the luminance and chrominance components. An average FFT is used to calculate kurtosis and skewness, then an image-quality metric is determined by calculating an offset from the kurtosis and skewness outputs.

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“A Statistical Measure for the Sharpness of the SEM Images”, Zhang et al, Proceedings of SPIE, Mar. 10-12 1997 vol. 3050.

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