A simple method of realizing the deconvolution of ultrasonic images
Abstract
A method is proposed to improve the lateral resolution and realize the deconvolution of ultrasound images. The soundbeam profile is approximated by model functions arising from the convolution of rectangular functions of varying widths. Fourier transforms and their reciprocals are analytically stated, and the reciprocals are allocated to a chain circuit of recursive spacefrequency filters of the first degree, which produces a resolution improvement by a factor of 1.5 to 2. A lowpass limitation function is introduced for noise suppression, and the inverse Fourier transform of this function is mathematically similar to the soundbeam approximation, although compressed by a specific factor and thus optimally matched to the expected resolution improvement.
 Publication:

Ultrasonics
 Pub Date:
 November 1981
 Bibcode:
 1981Ultra..19..273K
 Keywords:

 Convolution Integrals;
 Fourier Transformation;
 Image Processing;
 Imaging Techniques;
 Ultrasonic Radiation;
 Image Reconstruction;
 Image Resolution;
 Noise Reduction;
 Recursive Functions;
 Signal Processing;
 Spatial Filtering;
 Instrumentation and Photography