J. Ra

Most-cited papers

Multi-sensor image registration based on intensity and edge orientation information
Yong Sun Kim, Jae Hak Lee, J. Ra
2008Pattern Recognition106 citations
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Automatic registration between 3D intra-operative ultrasound and pre-operative CT images of the liver based on robust edge matching
W. H. Nam, D. Kang, Duhgoon Lee, Jae Young Lee +1 more
2012Physics in Medicine and Biology78 citations
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Contrast-Enhanced Fusion of Multisensor Images Using Subband-Decomposed Multiscale Retinex
J. Jang, Yoonsung Bae, J. Ra
2012IEEE Transactions on Image Processing74 citations
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Enhancement of Optical Remote Sensing Images by Subband-Decomposed Multiscale Retinex With Hybrid Intensity Transfer Function
J. Jang, Sung Deuk Kim, J. Ra
2011IEEE Geoscience and Remote Sensing Letters70 citations
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Non-rigid registration between 3D ultrasound and CT images of the liver based on intensity and gradient information
Duhgoon Lee, W. H. Nam, Jae Young Lee, J. Ra
2011Physics in Medicine and Biology51 citations
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Three-Dimensional Blood Vessel Quantification via Centerline Deformation
D. Kang, D. Suh, J. Ra
2009IEEE Transactions on Medical Imaging50 citations
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Robust CCD and IR Image Registration Using Gradient-Based Statistical Information
Jae Hak Lee, Yong Sun Kim, Duhgoon Lee, D. Kang +1 more
2010IEEE Signal Processing Letters49 citations
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Cardiac motion correction based on partial angle reconstructed images in x-ray CT.
Seungeon Kim, Yongjin Chang, J. Ra
2015Medical Physics (Lancaster)45 citations
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Post-Processing for Blocking Artifact Reduction Based on Inter-Block Correlation
S. Yoo, Kyuha Choi, J. Ra
2014IEEE transactions on multimedia42 citations
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Frame Rate Up Conversion Based on Variational Image Fusion
Won-Hee Lee, Kyuha Choi, J. Ra
2014IEEE Transactions on Image Processing39 citations Open access
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Example-Based Super-Resolution via Structure Analysis of Patches
Changhyun Kim, Kyuha Choi, J. Ra
2013IEEE Signal Processing Letters34 citations
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Reduction of artifacts due to multiple metallic objects in computed tomography
K. Jeong, J. Ra
2009Medical Imaging34 citations
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Image distortion correction for lenticula misalignment in three-dimensional lenticular displays
Yun-Gu Lee, J. Ra
200632 citations
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Automatic time gain compensation and dynamic range control in ultrasound imaging systems
Duhgoon Lee, Yong Sun Kim, J. Ra
2006SPIE Medical Imaging25 citations
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International Conference on Information Fusion ( FUSION ) Robust Multi-Sensor Image Registration by Enhancing Statistical Correlation
K. Kim, Jae Hak Lee, J. Ra
200625 citations
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Automatic Road Extraction From Remote Sensing Images Based on a Normalized Second Derivative Map
Yoonsung Bae, Won-Hee Lee, Yun-jun Choi, Young Woo Jeon +1 more
2015IEEE Geoscience and Remote Sensing Letters23 citations
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Resolution Improvement of Infrared Images Using Visible Image Information
Kyuha Choi, Changhyun Kim, Myung-Ho Kang, J. Ra
2011IEEE Signal Processing Letters22 citations
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Dynamic PET reconstruction using temporal patch-based low rank penalty for ROI-based brain kinetic analysis
Kyungsang Kim, Y. Son, Y. Bresler, Z. Cho +2 more
2015Physics in Medicine and Biology21 citations Open access
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Metal artifact reduction based on sinogram correction in CT
K. Jeong, J. Ra
20092009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)20 citations
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Head motion correction based on filtered backprojection for x‐ray CT imaging
Seokhwan Jang, Seungeon Kim, Mina Kim, J. Ra
2018Medical Physics (Lancaster)17 citations
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Position tracking of moving liver lesion based on real-time registration between 2D ultrasound and 3D preoperative images.
C. Weon, Woo Hyun Nam, Duhgoon Lee, Jae Young Lee +1 more
2014Medical Physics (Lancaster)17 citations Open access
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Motion-compensated PET image reconstruction with respiratory-matched attenuation correction using two low-dose inhale and exhale CT images
W. H. Nam, I. Ahn, Kyeong-Min Kim, Byung Il Kim +1 more
2013Physics in Medicine and Biology17 citations
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Sub-band decomposed multiscale retinex with space varying gain
J. Jang, B. Choi, Sung Deuk Kim, J. Ra
20082008 15th IEEE International Conference on Image Processing17 citations
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Robust learning-based super-resolution
Changhyun Kim, Kyuha Choi, Ho-Young Lee, Kyuyoung Hwang +1 more
20102010 IEEE International Conference on Image Processing16 citations
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Improvement on learning-based super-resolution by adopting residual information and patch reliability
Changhyun Kim, Kyuha Choi, J. Ra
2009International Conference on Information Photonics16 citations
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Pseudo-color image fusion based on intensity-hue-saturation color space
J. Jang, J. Ra
20082008 IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems16 citations
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Cardiac Image Reconstruction via Nonlinear Motion Correction Based on Partial Angle Reconstructed Images
Seungeon Kim, Yongjin Chang, J. Ra
2017IEEE Transactions on Medical Imaging15 citations
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An Effective Post-Filtering Framework for 3-D PET Image Denoising Based on Noise and Sensitivity Characteristics
Jihye Kim, I. Ahn, W. H. Nam, J. Ra
2015IEEE Transactions on Nuclear Science15 citations
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Region-based super-resolution using adaptive diffusion regularization
B. Choi, Sung Deuk Kim, J. Ra
200815 citations
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Cardiac Motion Correction for Helical CT Scan With an Ordinary Pitch
Seungeon Kim, Yongjin Chang, J. Ra
2018IEEE Transactions on Medical Imaging12 citations
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Ultra-Fast Hybrid CPU–GPU Multiple Scatter Simulation for 3-D PET
Kyung Sang Kim, Y. Son, Hee-Cho Zang, J. Ra +1 more
2014IEEE journal of biomedical and health informatics12 citations
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Sinogram-based super-resolution in PET
K. Jeong, Kyuha Choi, W. H. Nam, J. Ra
2011Physics in Medicine and Biology12 citations
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New image multiplexing scheme for compensating lens mismatch and viewing zone shifts in three-dimensional lenticular displays
Yun-Gu Lee, J. Ra
200912 citations
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Head Motion Correction Based on Filtered Backprojection in Helical CT Scanning
Seokhwan Jang, Seungeon Kim, Mina Kim, K. Son +2 more
2019IEEE Transactions on Medical Imaging11 citations
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Denoising of polychromatic CT images based on their own noise properties.
Jihye Kim, Yongjin Chang, J. Ra
2016Medical Physics (Lancaster)11 citations
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Simultaneous intermediate-view interpolation and multiplexing algorithm for a fast lenticular display
Hanshin Lim, Seok-Hoon Kim, Yun-Gu Lee, Lee-Sup Kim +2 more
200711 citations
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Super-Resolution Reconstruction of 3D PET Images Using Two Respiratory-Phase Low-Dose CT Images
I. Ahn, Jihye Kim, Yongjin Chang, W. H. Nam +1 more
2017IEEE Transactions on Radiation and Plasma Medical Sciences10 citations
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Robust registration of 3-D ultrasound and CT images of the liver for image-guided intervention
W. H. Nam, D. Kang, Duhgoon Lee, J. Ra
2010IEEE International Symposium on Biomedical Imaging10 citations
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Fast Motion Estimation Robust to Random Motions Based on a Distance Prediction
Yun-Gu Lee, J. Ra
2006IEEE transactions on circuits and systems for video technology (Print)10 citations
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Region-Based Super-Resolution Using Multiple Blurred and Noisy Undersampled Images
B. Choi, J. Ra
20062006 IEEE International Conference on Acoustics Speech and Signal Processing Proceedings10 citations
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Gamut-adaptive correction in color image processing
Yoonsung Bae, J. Jang, J. Ra
20102010 IEEE International Conference on Image Processing9 citations
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Texture enhancement for improving single-image super-resolution performance
S. Yoo, Kyuha Choi, Young Woo Jeon, J. Ra
2016Signal processing. Image communication8 citations
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Blind Post-Processing for Ringing and Mosquito Artifact Reduction in Coded Videos
S. Yoo, Kyuha Choi, J. Ra
2014IEEE transactions on circuits and systems for video technology (Print)8 citations
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Sinogram Super-Resolution Using a Space-Variant Blur Matrix in PET
K. Jeong, Jihye Kim, Kyeong-Min Kim, J. Ra
2013IEEE Transactions on Nuclear Science8 citations
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Infrared image enhancement based on an aligned high resolution visible image
Kyuha Choi, Changhyun Kim, J. Ra
20102010 IEEE International Conference on Image Processing8 citations
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Development of Positron Emission Tomography With Wobbling and Zooming for High Sensitivity and High-Resolution Molecular Imaging
Z. Cho, Y. Son, H. Kim, D.-H. Kwon +4 more
2019IEEE Transactions on Medical Imaging7 citations
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Block Poisson Method and its application to large scale image editing
Dewey H. Lee, S. Yoo, Myungjin Choi, J. Ra +1 more
20122012 19th IEEE International Conference on Image Processing7 citations
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Noninteger View Multiplexing for 3D Lenticular Display
Changhyun Kim, J. Ra
20073DTV-Conference7 citations
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Dynamic focal plane estimation for dental panoramic radiography.
Seungeon Kim, J. Ra
2019Medical Physics (Lancaster)6 citations
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Real‐time respiratory phase matching between 2D fluoroscopic images and 3D CT images for precise percutaneous lung biopsy
C. Weon, Mina Kim, C. Park, J. Ra
2017Medical Physics (Lancaster)6 citations
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