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Proceedings Paper

Real-time 3D ultrasound fetal image enhancment techniques using motion-compensated frame rate up-conversion
Author(s): Gun-Ill Lee; Rae-Hong Park; Young-Seuk Song; Cheol-An Kim; Jae-Sub Hwang
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Paper Abstract

In this paper, we present a motion compensated frame rate up-conversion method for real-time three-dimensional (3-D) ultrasound fetal image enhancement. The conventional mechanical scan method with one-dimensional (1-D) array converters used for 3-D volume data acquisition has a slow frame rate of multi-planar images. This drawback is not an issue for stationary objects, however in ultrasound images showing a fetus of more than about 25 weeks, we perceive abrupt changes due to fast motions. To compensate for this defect, we propose the frame rate up-conversion method by which new interpolated frames are inserted between two input frames, giving smooth renditions to human eyes. More natural motions can be obtained by frame rate up-conversion. In the proposed algorithm, we employ forward motion estimation (ME), in which motion vectors (MVs) ar estimated using a block matching algorithm (BMA). To smooth MVs over neighboring blocks, vector median filtering is performed. Using these smoothed MVs, interpolated frames are reconstructed by motion compensation (MC). The undesirable blocking artifacts due to blockwise processing are reduced by block boundary filtering using a Gaussian low pass filter (LPF). The proposed method can be used in computer aided diagnosis (CAD), where more natural 3-D ultrasound images are displayed in real-time. Simulation results with several real test sequences show the effectiveness of the proposed algorithm.

Paper Details

Date Published: 23 May 2003
PDF: 11 pages
Proc. SPIE 5035, Medical Imaging 2003: Ultrasonic Imaging and Signal Processing, (23 May 2003); doi: 10.1117/12.479894
Show Author Affiliations
Gun-Ill Lee, Sogang Univ. (South Korea)
Rae-Hong Park, Sogang Univ. (South Korea)
Young-Seuk Song, Medison Co., Ltd. (South Korea)
Cheol-An Kim, Medison Co., Ltd. (South Korea)
Jae-Sub Hwang, Medison Co., Ltd. (South Korea)

Published in SPIE Proceedings Vol. 5035:
Medical Imaging 2003: Ultrasonic Imaging and Signal Processing
William F. Walker; Michael F. Insana, Editor(s)

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