Bayes error evaluation of the Gaussian ML classifier. - Chulhee Lee; Euisun Choi (IEEE Trans. Geosci. Remote. Sens., 2000)

Optimizing feature extraction for multiclass problems. - Euisun Choi; Chulhee Lee (IEEE Trans. Geosci. Remote. Sens., 2001)

Optimizing feature extraction for English word recognition. - Euisun Choi; Donghoon Hyun; Chulhee Lee (ICASSP, 2002)

Feature extraction based on the Bhattacharyya distance. - Euisun Choi; Chulhee Lee (Pattern Recognit., 2003)

Optimizing feature extraction for speech recognition. - Chulhee Lee; Donghoon Hyun; Euisun Choi; Jinwook Go; Chungyong Lee (IEEE Trans. Speech Audio Process., 2003)

Analyzing the Gaussian ML classifier for limited training samples. - Chulhee Lee; Euisun Choi; Byungjoon Baek; Changrak Yoon (IGARSS, 2004)

Principal component analysis with pre-emphasis for compression of hyperspectral imagery. - Euisun Choi; Hyunsoo Choi; Chulhee Lee (IGARSS, 2005)

Feature Extraction for Bank Note Classification Using Wavelet Transform. - Euisun Choi; Jongseok Lee; Joonhyun Yoon (ICPR (2), 2006)

Efficient multi-currency classification of CIS banknotes. - Sungwook Youn; Euisun Choi; Yoonkil Baek; Chulhee Lee (Neurocomputing, 2015)

Soiled banknote fitness determination based on morphology and Otsu's thresholding. - Sanghun Lee; Sangwook Baek; Euisun Choi; Yoonkil Baek; Chulhee Lee (ICCE, 2017)

Paper check image quality enhancement with Moire reduction. - Jiheon Ok; Sungwook Youn; Guiwon Seo; Euisun Choi; Yoonkil Baek; Chulhee Lee (Multim. Tools Appl., 2017)

Automatic Banknote Stain Detection. - Jiho Yoon; Sangwook Baek; Euisun Choi; Hyunji Jo; Chulhee Lee (Image Processing: Algorithms and Systems, 2018)

Detection of counterfeit banknotes using multispectral images. - Sangwook Baek; Euisun Choi; Yoonkil Baek; Chulhee Lee (Digit. Signal Process., 2018)

Morphology-Based Banknote Fitness Determination. - Sanghun Lee; Euisun Choi; Yoonkil Baek; Chulhee Lee (IEEE Access, 2019)

Banknote simulator for aging and soiling banknotes using Gaussian models and Perlin noise. - Sangwook Baek; Sanghun Lee; Euisun Choi; Yoonkil Baek; Chulhee Lee (Expert Syst. Appl., 2019)