Dr. Chang-Hwan Son 

Chang-Hwan Son received the B.S., M.S., and Ph.D. degrees in electronic engineering from Kyungpook National University, Daegu, South Korea, in 2002, 2004, and 2008, respectively. His advisory was Prof. Yeong-Ho Ha. During his Ph. D. program, he was selected as a national scholarship student in 2006. After he got his doctorate, he worked at Samsung Electronics, Suwon, South Korea. As a senior researcher, he developed color & image processing algorithms in digital printers and copiers. From 2015 to 2017, he was a post-doctoral researcher with the department of electrical and computer engineering, Ryerson University, Canada where he received full funding from his supervisor Prof. Xiao-Ping Zhang. Since 2017, he has been with the Department of the Software Science & Engineering, Kunsan National University, South Korea, where he is currently a Full Professor and the Director of the Vision and Learning Laboratory. His current research interests include image processing, computer vision, deep learning, machine learning, multispectral processing, and color imaging. He was/is an Associate Editor of the IEEE Access Journal and the Journal of Imaging Science and Technology.

Domestic Journals

* Image Processing, Computer Vision, Deep Learning, Vision-Languange Model

"Blind all-in-one image restoration using vision-language model, The Journal of Korean Institute of Information Technology (JKIIT), 2025.

"Detection-based pest counting model using learnable text prompt vectors," Journal of Institute of Korean Electrical and Electronics Engineers (Journal of IKEEE), 2025. 

"Blind heavy rain face image restoration using multimodal text-image alignment," Journal of Institute of Korean Electrical and Electronics Engineers (Journal of IKEEE), 2024.

A new Mada-CenterNet based on Dual Block to improve accuracy of pest counting, Journal of Institute of Korean Electrical and Electronics Engineers (Journal of IKEEE), 2024.

"A illumination-aware learnable image filtering model for object detection in low-light conditions," Journal of Institute of Korean Electrical and Electronics Engineers (Journal of IKEEE), 2024.

"Pest counting model based on spatially variant kernels and adaptive density map generation," The Journal of Korean Institute of Information Technology (JKIIT), 2024.

"Multispectral object detection based on cross-attention fusion," will be published in The Journal of Korean Institute of Information Technology (JKIIT), 2023.

"Multiscale and deformable density attention model for trap-based pest counting," will be published in The Journal of Korean Institute of Information Technology (JKIIT), 2023.

"Region-of-interest-based multiscale cross attention vision transformer for pest image classification," will be published in The Journal of Korean Institute of Information Technology (JKIIT), 2023.

"Pest image superresolution based on latent feature knowledge transfer," will be published in The Journal of Korean Institute of Information Technology (JKIIT), 2023.

"Blind heavy rain face image restoration using statistical feature transformation for each facial component," will be published in The Journal of Korean Institute of Information Technology (JKIIT), 2023.

"Pyramid vision transformer based on bidirectional multiscale feature fusion for pest classification," The Journal of Korean Institute of Information Technology (JKIIT), vol. 20, no. 10, pp. 91-98,  Oct. 2022.

"Pest image superresolution using class-specific perceptual loss model and region-of-interests features," The Journal of Korean Institute of Information Technology (JKIIT), vol. 20, no. 8, pp. 123-132, Aug. 2022. 

"Multiscale centernet for pest detection and counting," The Journal of Korean Institute of Information Technology (JKIIT), vol. 20, no. 7, pp. 111-121, Jul. 2022. 

"Super resolution with sparse gradient-guided attention and wavelet loss for suppressing image structural distortion," The Journal of Korean Institute of Information Technology (JKIIT), vol. 20, no. 4, pp. 107-122, Apr. 2022.

"Super resolution of face images captured in heavy rain conditions," The Journal of Korean Institute of Information Technology (JKIIT), vol. 19, no. 10, pp. 87-98, Oct. 2021. 

"Image captioning via semantic visual feature matching in heavy rain condition,"  The Journal of Korean Institute of Information Technology (JKIIT), vol. 19, no. 5, pp. 19-29,  May 2021. 

"Attention-enhanced YOLO model via region of interest feature extraction for leaf diseases detection," The Journal of Korean Institute of Information Technology (JKIIT), vol. 19, no. 4, pp. 83-93,  Apr. 2021. 

"Structure-aware residual network for rain streak removal," The Journal of Korean Institute of Information Technology (JKIIT), vol. 18, no. 10, pp. 87-100,  Oct. 2020. (MatConvNet source code)

"Rain removal via deep convolutional neural networks considering orientation and strength of rain streaks," The Journal of Korean Institute of Information Technology (JKIIT), 2019.

"Recognizing apple leaf diseases via segmentation-aware deep convolutional neural networks for smart farm,"  The Journal of Korean Institute of Information Technology (JKIIT), 2019.

"Decoding hidden data from image barcode via deep convolutional neural networks," The Journal of Korean Institute of Information Technology (JKIIT), pp. 65-75, May 2019.

"Image denoising via structure-aware deep convolutional neural networks," The Journal of Korean Institute of Information Technology (JKIIT), 2018.

"Recognizing species and conditions of street trees based on multiscale and deep feature extraction," Journal of the Institute of Electronics and Information Engineers (Journal of IEIE), vol. 55, no.4, pp. 70-78, April 2018.

International Journals and Conferences  

 * Image Processing, Computer Vision, Deep Learning

Degradation-agnostic statistical facial feature transformation for blind face restoration in adverse weather conditions, arXiv preprint arXiv:2507.07464 .

"Locally grouped and scale-guided attention for dense pest counting," International Journal of Intelligent Systems (IJIS), Article ID 4732253, 2025.   

"ROI-aware multiscale cross-attention vision transformer for pest image identification," Computers and Electronics in Agriculture, vol. 237, Oct. 2025. (arXiv:2312.16914 [cs.CV])

"Layer decomposition learning based on discriminative feature group split with bottom-up intergroup feature fusion for single image deraining " IEEE Access, vol. 12, pp. 78024-78039, June 2024.

"Trap-based pest counting : Multiscale and deformable attention CenterNet integrating internal LR and HR joint feature learning", Remote Sensing, vol. 15, no. 15,  3810, July 2023 .

"Heavy rain face image restoration: integrating physical degradation model and facial component-guided adversarial learning," Sensors, vol. 22, no. 14, 5359, July 2022. (paper , pytorch code) (A new face image restoration for heavy rain face images!! )

"Super resolution with sparse gradient-guided attention for suppressing structural distortion " IEEE International Conference on Machine Learning and Applications (IEEE ICMLA), Virtual, pp. 886-891, Dec. 2021

"New encoder learning for captioning heavy rain images via semantic visual feature matching," Journal of Imaging Science and Technology (JIST), vol 65. no. 5, pp. 050402-1–050402-12 , Sept./Oct. 2021. (IS&T Itek Award 우수 논문상 수상), (arXiv version) (pytorch code) 

"Leaf spot attention networks based on spot feature encoding for leaf diseases identification and detection," Applied Sciences, vol. 11, 7960, 2021, which is an updated version of IEEE CVPR workshop. 

"Layer decomposition learning based on gaussian convolution model and residual deblurring for inverse halftoning," Applied Sciences, vol. 11, no. 15, 7006, July 2021. (Resulting Images, BSDS100)

"Leaf spot attention network for apple leaf disease identification," IEEE Conference on Computer Vision and Pattern Recognition (IEEE CVPR) Workshop, Virtual, June 2020, pp. 229-237.  (paper) (Matlab source code)

"Inverse halftoning through structure-aware deep convolutional neural networks," Signal Processing, (arXiv version) vol. 173, Aug. 2020.

"Rain detection and removal via shrinkage-based sparse coding and learned rain dictionary," Journal of Imaging Science and Technology (JIST), vol. 64, no. 3, pp. 30501-1-30501-17(17), May 2020.

"Apple leaf disease identification through region-of-interest-aware deep convolutional neural network," Journal of Imaging Science and Technology (JIST), vol. 64, no. 2, pp. 20507-1-20507-10, Jan. 2020.

"Near-infrared fusion via color regularization for haze and color distortion removals," IEEE Transactions on Circuits and Systems for Video Technology (IEEE T-CSVT), vol. 28, no, 11, pp. 3111-3126, Nov. 2018.  (Resulting Images)

"Near-infrared fusion via a series of transfers for noise removal," Signal Processing, vol. 143, pp. 20-27, Feb. 2018.

"Near-infrared coloring via a contrast preserving mapping model," IEEE Transactions on Image Processing (IEEE T-IP), vol. 26, no. 11, pp. 5381-5394, Nov. 2017. (Resulting Images)

"Multimodal fusion via a series of transfers for noise removal,"  IEEE International Conference on Image Processing (IEEE ICIP), pp. 530-534, 2017.

"Rain removal via shrinkage of sparse codes and learned rain dictionary," IEEE International Conference on Multimedia & Expo (IEEE ICME) Workshop, 2016. (Matlab source code)

"Layer-based approach for image pair fusion," IEEE Transactions on Image Processing (IEEE T-IP),  vol. 25, no. 6, pp. 2866-2881, April 2016.

"Near-infrared coloring via a contrast-preserving mapping model," IEEE Global Conference on Signal and Information Processing (IEEE GlobalSIP) pp. 677-681, 2015. 

"Local learned dictionaries optimized to edge orientation for inverse halftoning," IEEE Transactions on Image Processing (IEEE T-IP), vol. 23, no. 16, pp. 2542-2556, June 2014. (C++ source code)

"Inverse color to black-and-white halftone conversion via dictionary learning and color mapping," Information Sciences, vol. 299, pp. 1-19, 2015.

"Disparity-based space-variant image deblurring," Signal Processing: Image Communication, vol. 28, no. 7, pp.792-808, 2013.

"Image-pair-based deblurring with spatially varying norms and noisy image updating," Journal of Visual Communication and Image Representation (JVCIR), vol. 24, no. 8, pp. 1303-1315, 2012.

"Inverse halftoning based on sparse representation," Optics Letters (Opt. Lett.), 2012.

"Sparsity-based inverse halftoning," Electronics Letters (Electron Lett), 2012.

"A pair of noisy/blurry patches-based psf estimation and channel-dependent deblurring," IEEE Transactions on Consumer Electronics (IEEE T-CE), vol. 57, no. 4, pp. 1791-1799, 2011.

* Biomedical & Time-Series Signal Analysis

"Attention-based multiscale localization for bone age assessment," will be published in  IEEE International Symposium on Biomedical Imaging (IEEE ISBI), 2023.

"Combining gaussian process with hybrid optimal feature decision in cuff-less blood pressure estimation," Diagnostics, vol. 13, no. 4, 736, Feb. 2023.

"Cuff-less blood pressure estimation with confidence intervals using hybrid feature selection and decision based on gaussian process," Applied Sciences, vol. 13, 1221, Jan. 2023. 

"Respiratory rate estimation combining autocorrelation function-based power spectral feature extraction with gradient boosting algorithm," Applied Sciences, vol. 12, 8355, Aug. 2022. 

"Multi-modal fundus image registration with deep feature matching and image scaling," International Conference on Ubiquitous Information Management and Communication (IMCOM), Jan. 2022.

"Inter-dependent LSTM: Baseball game prediction with starting and finishing lineups," International Conference on Ubiquitous Information Management and Communication (IMCOM), 2021.

"Multi-phases and various feature extraction and selection methodology for ensemble gradient boosting in estimating respiratory rate",  IEEE Access, vol. 8, pp. 125648 - 125658, July 2020.

"Deep feature fusion based on contrast enhancement and superpixels for bone age diagnosis," The Journal of Korean Institute of Information Technology (JKIIT), vol.18, no.3, pp. 127-137, March 2020. (Matlab source code)

* Color & Multispectral Imaging

"Improved color separation based on dot-visibility modeling and color mixing rule for six-color printers," Journal of Imaging Science and Technology (JIST), vol. 55 no. 1, pp. 10505-1-10505-16, 2011.

"Adaptive color reproduction method to various users' monitor environment in color printer," SPIE Electronic Imaging, 2010.

"Photo-inkjet printing method based on limited colorant amount and dot-visibility ordering," IEEE Transactions on Consumer Electronics (IEEE T-CE), vol. 56, no. 2, pp. 280-288, 2010. 

"Color correction of images projected on a colored screen for mobile beam projector," Journal of Imaging Science and Technology (JIST), vol. 52 no. 3, pp. 30505-1-30505-11, 2008.

"Illumination-level adaptive color reproduction method with lightness adaptation and flare compensation for mobile display," Journal of Imaging Science and Technology (JIST), vol. 51, no. 1, pp. 44-52, 2007.

"Improved inverse characterization of multicolorant printer using colorant correlation,"  Journal of Imaging Science and Technology (JIST), vol. 51, no. 2, pp. 175-184, 2007.

"Real-time color matching between camera and LCD based on 16-bit lookup table design in mobile phone," Journal of Imaging Science and Technology (JIST), vol. 51, no. 4, pp. 348-359, 2007.

"Six color separation using additional colorants and quantitative granularity metric,"  Journal of Imaging Science and Technology (JIST), vol. 50, no, 1, pp. 25-34, 2006.

"Illuminant adaptive color reproduction based on lightness adaptation and flare for mobile phone," IEEE International Conference on Image Processing (IEEE ICIP), pp. 1513-1516, 2006.

"Hi-Fi printer characterization method using color correlation for gamut extension," IEEE International Conference on Image Processing (IEEE ICIP), pp. 1517-1520, 2006.

"Six color separation using the additional colorants with less dot visibility," IS&T Color Imaging Conference (CIC), pp. 189-194, 2005.

"Six-color separation for improving graininess in a middle tone region," Color Imaging IX: Processing, Hardcopy, and Application, Electronic Imaging, 2004.

* Halftoning & Hardcopy Data Hiding

"Estimating embedded data from clustered halftone dots via learned dictionary," IEEE International Conference on Image Processing (IEEE ICIP), pp. 2624-2628, 2014.

"Watermark detection from clustered halftone dots via learned dictionary," Signal processing, vol. 102, pp. 77-84, 2014.

"Color embedding and recovery based on wavelet packet transform," Journal of Imaging Science and Technology (JIST), vol. 52, no. 1, pp. 10501-1-10501-10, 2008.

"Text-enhanced error diffusion using multiplicative parameters and error scaling factor," Journal of Imaging Science and Technology (JIST), vol. 50, no. 5, pp. 437-447. Sep./Oct. 2006.

"Multitoning method based on threshold modulation using MJBNM for banding artifact reduction,"  IS&T  Conference on Colour in Graphics, Imaging, and Vision (CGIV), pp. 318-321, 2006.

Other Conferences

"Pest identification ViT : Integrating ROI-aware multiscale cross-attention for complex backgrounds and small sizes," International Conference on Multimedia Information Technology and Applications (MITA), 2024.

"Lightweight deep extraction networks for single image de-raining ," International Conference on Ubiquitous Information Management and Communication (IMCOM), 2021. 

"BCGAN: Facial expression synthesis by bottleneck-layered conditional generative adversarial networks  ," International Conference on Ubiquitous Information Management and Communication (IMCOM), 2021.  

"해충 카운팅을 위한 딥러닝 모델 성능 비교," 한국정보기술학회 추계종합학술대회, 11월 26일, 제주도, 2021.

"관심영역 특징 추출 기반의 해충 초고해상화 기법," 한국정보기술학회 추계종합학술대회, 11월 26일, 제주도, 2021.

"전이학습 기반의 해충 영상 분류 성능 비교," 한국정보기술학회 추계종합학술대회, 11월 26일, 제주도, 2021.

Patents

국내출원, 영상 복원 장치 및 영상 복원 장치의 얼굴 영상 복원 방법 , 2025.

국내출원, 고밀도 객체 검출을 위한 어텐션 생성 방법 및 장치 , 2025.

국내출원, 무인 예찰 해충 트랩 시스템, 2024. 

국내출원, 의료 영상 분석 방법 및 장치, 2024.

국내출원, 저조도 환경에서의 객체 검출을 위한 조명 인식 학습 가능 한 이미지 필터링 모델 제공 장치 및 방법 , 2024.

국내출원, 객체 카운팅을 위한 예측 장치 및 카운팅 신경망을 학습하는 방법 , 2023.

국내출원, 이미지 분류 방법 및 그 장치, 2023.

국내등록특허(KR), 이미지의 노이즈 제거를 위한 인공지능 학습 방법 및 장치, 2024.

국내등록특허(KR), 상호 의존 LSTM 모델 기반 야구 경기의 domain shift 문제 해결 모델, 2022.

국제등록특허(US), 화상 형성 장치와 컬러 보정 그 방법 및 이를 이용하어 출력 영상의 컬러를 보정하기 위한 호스트 장치, 2017.

국제등록특허(US), 화상 투사 장치의 이미지 컬러를 조절하기 위한 방법과 장치, 2013.

국제등록특허(US), 모바일 디스플레잉 장치에 있는 색맹의 사람을 위한 조절하는 색상 구성의 방법, 2013.

국내등록특허(KR), 모바일 디스플레이 장치에서의 색약자를 위한 구현 방법, 2008

국내등록특허(KR), 휴대영상장치의 영상 구현 방법, 2003.