Artifact removal and texture-based rendering for visualization of 3D fetal ultrasound images.
Convenient and non-invasive ultrasonography has become an essential tool for diagnosing fetal abnormalities. However, the noisy and blurry nature of sonographic data poses a challenge. To improve object visualization, we first develop a modified diffusion filter that utilizes the local standard deviation and edge of local-average-difference to define an adaptive edge stopping function in diffusion filtering. The proposed method overcomes the drawbacks of traditional diffusion filters and shows good results in comparative experiments. Moreover, we propose a novel light absorbing function to remove large regions of interface artifacts. An advanced imaging mode, called texture-based rendering, is employed to provide more realistic rendering. Experimental results show that the proposed methods enhance final image quality in 3D fetal sonograms.
Wang
Shyh-Roei
SR
Visual System Laboratory, Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, 701, Taiwan, ROC.
Sun
Yung-Nien
YN
Chang
Fong-Ming
FM
D016477:Artifacts; D015350:Contrast Sensitivity; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods*