Resolution enhancement in medical ultrasound imaging.
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...Reference [47] employed the idea that RF signal envelopes have to be improved to increase the resolution of images....
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Cites methods from "Resolution enhancement in medical u..."
...Histogram equalization methods have been widely used in the field of image processing for improving both contrast and structure visibility, therein utilizing the overall intensity distribution in the image as characterized by the normalized cumulative histogram [31]....
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"Resolution enhancement in medical u..." refers background in this paper
...and the resolution problem comes to the point of hypothesis testing: R < 0: the two points are resolved R ≥ 0: the two points are not resolved : (14)...
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"Resolution enhancement in medical u..." refers background in this paper
...(6), it can be seen that since PSDyðfÞ is directly linked to the frequency variable f via the exponential function, the frequency resolution may be theoretically not limited, provided the am coefficients and the model order M are known....
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...PSDyðfÞ 1⁄4 σ(2) j1þPMm1⁄41 am expð−2πjfmÞj2 ; (6)...
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...(5) and (6) on this inverse Fourier transform leads to a new (better resolved) envelope signal....
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