Prof. Nam Ik Cho Profile

Prof. Nam Ik Cho

at Seoul National Univ

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Author

Publications (17)

Proceedings Article | 5 February 2025 Paper

A hybrid video compression framework using lossless compression and reference-guided restoration network

Hochang Rhee, Seyun Kim, Nam Ik Cho

Proceedings Volume 13510, 1351011 (2025) https://doi.org/10.1117/12.3057978

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Proceedings Article | 2 May 2024 Paper

Enhancing super resolution via frequency domain losses

Min Woo Kim, Nam Ik Cho

Proceedings Volume 13164, 1316412 (2024) https://doi.org/10.1117/12.3018303

KEYWORDS: Education and training, Super resolution, Signal attenuation, Lawrencium, Resolution enhancement technologies, Image processing, Fused deposition modeling, Matrices, Wavelets, Network architectures

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Proceedings Article | 26 March 2023 Paper

Deformable offset gating network with variational auto-encoder for compression artifacts reduction

JeongHwan Yoon, NamIk Cho

Proceedings Volume 12592, 1259218 (2023) https://doi.org/10.1117/12.2666977

KEYWORDS: Image compression, Image quality, Convolution, Image restoration, Modulation, Network architectures, Quantization, Control systems, Performance modeling, Image processing

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Proceedings Article | 1 May 2022 Paper

Kernel estimation for super-resolution with flow-based kernel prior

Sunwoo Cho, Nam Ik Cho

Proceedings Volume 12177, 1217739 (2022) https://doi.org/10.1117/12.2625958

KEYWORDS: Super resolution, Lawrencium, Image analysis, Gallium nitride, Image quality, Image processing, Convolution, Process modeling, Performance modeling, Error analysis

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Proceedings Article | 13 March 2021 Paper

DSBN: Detail-Structure Blending Network for video super-resolution

Haesoo Chung, Sang-hoon Lee, Nam Ik Cho

Proceedings Volume 11766, 1176607 (2021) https://doi.org/10.1117/12.2590625

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Proceedings Article | 22 March 2019 Paper

Blind detection of fabric defects using multiple image features

Karam Park, Sangyup Oh, Sang Hwa Lee, Nam Ik Cho

Proceedings Volume 11049, 110493S (2019) https://doi.org/10.1117/12.2521548

KEYWORDS: Defect detection, Image processing, Feature extraction, Machine learning, Edge detection

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Proceedings Article | 22 March 2019 Paper

Multi-kernel-based deep residual networks for image super-resolution

Jae Woong Soh, Gu Yong Park, Nam Ik Cho

Proceedings Volume 11049, 1104908 (2019) https://doi.org/10.1117/12.2521217

KEYWORDS: Super resolution, Network architectures, Convolutional neural networks

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SPIE Journal Paper | 9 June 2016

Robust skew estimation using straight lines in document images

Hyung Il Koo, Nam Ik Cho

JEI, Vol. 25, Issue 03, 033014, (June 2016) https://doi.org/10.1117/12.10.1117/1.JEI.25.3.033014

KEYWORDS: Sensors, Algorithm development, Image segmentation, Databases, Edge detection, Image analysis, Image processing, Detection and tracking algorithms, Optical character recognition, Binary data

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SPIE Journal Paper | 12 May 2015

Unified framework for automatic image stitching and rectification

Jaehyun An, Beom Su Kim, Hyung-Il Koo, Nam Ik Cho

JEI, Vol. 24, Issue 03, 033007, (May 2015) https://doi.org/10.1117/12.10.1117/1.JEI.24.3.033007

KEYWORDS: Cameras, Image registration, Algorithm development, Reconstruction algorithms, Image processing, Visualization, Composites, Detection and tracking algorithms, Motion estimation, Image resolution

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SPIE Journal Paper | 21 May 2014 Open Access

Wavelet-domain satellite image fusion based on a generalized fusion equation

Bora Jin, Gibak Kim, Nam Ik Cho

JARS, Vol. 8, Issue 01, 080599, (May 2014) https://doi.org/10.1117/12.10.1117/1.JRS.8.080599

KEYWORDS: Image fusion, Wavelets, Earth observing sensors, Image quality, Satellites, Satellite imaging, High resolution satellite images, Image resolution, Image sensors, Distortion

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SPIE Journal Paper | 31 January 2013

Skew estimation of natural images based on a salient line detector

Hyung-Il Koo, Nam Ik Cho

JEI, Vol. 22, Issue 01, 013020, (January 2013) https://doi.org/10.1117/12.10.1117/1.JEI.22.1.013020

KEYWORDS: Sensors, Image analysis, Edge detection, Error analysis, Algorithm development, Hough transforms, Cameras, Sensor performance, Statistical analysis, Electronic imaging

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Proceedings Article | 2 February 2012 Paper

Estimating the coordinates of pillars and posts in the parking lots for intelligent parking assist system

Jae Hyung Choi, Jung Gap Kuk, Young Il Kim, Nam Ik Cho

Proceedings Volume 8300, 83000L (2012) https://doi.org/10.1117/12.908333

KEYWORDS: Cameras, Detection and tracking algorithms, Intelligence systems, Ultrasonics, Sensors, 3D image processing, Motion estimation, Imaging systems, Mirrors, Hough transforms

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SPIE Journal Paper | 1 July 2011

Autofocus method using dual aperture and color filters

Kwanghyun Koh, Jung Gap Kuk, Bora Jin, Wooseok Choi, Nam Ik Cho

JEI, Vol. 20, Issue 03, 033002, (July 2011) https://doi.org/10.1117/12.10.1117/1.3602213

KEYWORDS: Cameras, Atrial fibrillation, Optical filters, Imaging systems, Sensors, Error analysis, Digital cameras, CCD cameras, Electrical engineering, Phase measurement

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SPIE Journal Paper | 1 January 2011 Open Access

Colorization based on soft segmentation

Hyung-Il Koo, Nam-Ik Cho

JEI, Vol. 20, Issue 1, 010502, (January 2011) https://doi.org/10.1117/12.10.1117/1.3565470

KEYWORDS: Image segmentation, Image processing algorithms and systems, 3D image processing, Visualization, Error analysis, Information technology, Image processing, Chromium

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SPIE Journal Paper | 1 April 2010 Open Access

New automatic defect classification algorithm based on a classification-after-segmentation framework

Sang-Hak Lee, Hyung-Il Koo, Nam-Ik Cho

JEI, Vol. 19, Issue 02, 020502, (April 2010) https://doi.org/10.1117/12.10.1117/1.3429116

KEYWORDS: Image segmentation, Particles, Semiconducting wafers, Feature extraction, Image processing, Image classification, Image filtering, Semiconductors, Data modeling, Algorithm development

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Proceedings Article | 4 January 2002 Paper

Facial feature tracking by robust face segmentation and scalable rotational BMA

Jung Kim, Nam Ik Cho, Seok Cheol Kee, Sang Uk Lee

Proceedings Volume 4671, (2002) https://doi.org/10.1117/12.453025

KEYWORDS: Image segmentation, Detection and tracking algorithms, Laser induced plasma spectroscopy, Edge detection, Principal component analysis, Feature extraction, Facial recognition systems, Distance measurement, Mouth, Sun

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Proceedings Article | 4 January 2002 Paper

Scene change detection by feature extraction from strong edge blocks

Han Song, Il Koo Kim, Nam Ik Cho

Proceedings Volume 4671, (2002) https://doi.org/10.1117/12.453122

KEYWORDS: Video, Feature extraction, Detection and tracking algorithms, Video coding, Image processing, Computer science, Video compression, Multimedia, Distance measurement, Motion estimation

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Showing 5 of 17 publications

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