论文信息 - Scene power spectra: the moment as an image quality merit factor.

Scene power spectra: the moment as an image quality merit factor.

Coherent optical power spectra of random scene imagery can become a powerful image evaluation technique when properly analyzed. A normalized low order moment of power spectra is set forth as a good image quality merit factor, which also has the advantageous property of taking out the spectrum analyzer's aperture effect. In addition to the relevant theory, experimental results with this merit factor of power spectra are given that demonstrate a high degree of correlation with subjective quality rankings, as well as the accurate assessment of optimum focus.

N B Nill

[1] H Stark,et al. Design considerations in power spectra measurements by diffraction of coherent light. , 1969, Applied optics.

[2] D. Halford,et al. A general mechanical model for |f| α spectral density random noise with special reference to flicker noise 1/|f| , 1968 .

[3] J. Arsac,et al. Fourier Transforms and the Theory of Distributions , 1968 .

[4] Y. Itakura,et al. Statistical properties of the background noise for the atmospheric windows in the intermediate infrared region , 1974 .

[5] E. H. Linfoot. Transmission factors and optical design , 1956 .

[6] George G. Lendaris,et al. Diffraction-pattern sampling for automatic pattern recognition , 1970 .

[7] H. Stark,et al. Minimum-bias spectral estimation with a coherent optical spectrum analyzer , 1975 .

[8] E. M. Lowry,et al. Sine-Wave Response of the Visual System. II. Sine-Wave and Square-Wave Contrast Sensitivity*† , 1962 .

[9] A. Katz. Aerial Photographic Equipment and Applications to Reconnaissance , 1948 .

[10] Leonard J. Porcello,et al. Optical data processing and filtering systems , 1960, IRE Trans. Inf. Theory.

[11] H. Thiry. Power Spectrum of Granularity as Determined by Diffraction , 1963 .

[12] A. V. Lugt,et al. Coherent optical processing , 1974 .

[13] John F. Walkup,et al. Image Processing In Signal-Dependent Noise , 1974 .