Image enhancement for sonograms acquired by high frame rate mode

Wen-Li Lee; Mei-Juan Chen

doi:10.1117/12.844118

12 March 2010 Image enhancement for sonograms acquired by high frame rate mode

Wen-Li Lee, Mei-Juan Chen

Proceedings Volume 7629, Medical Imaging 2010: Ultrasonic Imaging, Tomography, and Therapy; 762916 (2010) https://doi.org/10.1117/12.844118
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

Abstract

Sonography performed in high frame rate aims to achieve high temporal resolution. Echocardiography and fetal echocardiography are typical examinations performed in this manner. In general, image quality of sonograms acquired by high frame rate mode is poorer compared to that acquired by low frame rate mode. Poor definition and rich of noises are drawbacks usually found in the images obtained in high frame rate. We propose an approach to improve image quality of the sonograms, in which the noises can effectively be removed from the corrupted images and the definition of textures can also be enhanced. Three techniques are involved in the approach: image interpolation, addition of spatial information and averaging image by cycle spinning. The first technique is employed to generate extra spatial information. The second one intends to extract high frequency information from the original image and add the information to the high frequency subbands so that the image can further be enhanced. The last technique aims to remove noises by averaging images which have been undergone frame shifting and coefficient addition. Our experimental results show that noises randomly scattered in the images, not speckles, are effectively removed, and the definition of texture is further reinforced.

Citation Download Citation

Wen-Li Lee and Mei-Juan Chen "Image enhancement for sonograms acquired by high frame rate mode", Proc. SPIE 7629, Medical Imaging 2010: Ultrasonic Imaging, Tomography, and Therapy, 762916 (12 March 2010); https://doi.org/10.1117/12.844118

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KEYWORDS

Image enhancement

Image processing

Image quality

Absorbance

Wavelets

Linear filtering

Image restoration

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