Wataru Ohyama

Publication Activity (10 Years)

Years Active: 2000-2024
Publications (10 Years): 21

Top Topics

Convolutional Neural Network

Signature Verification

Character Recognition

Metric Learning

Top Venues

Publications

Wataru Ohyama, Yoshinori Hatano, Hajime Baba
Automatic Measured Drawing Generation for Mokkan Using Deep Learning. IW-FCV (2024)
Satoru Nakamura, Guanwei Liu, Hajime Miyazaki, Satoshi Inoue, Wataru Ohyama, Taizo Yamada
Implementation of data-driven historical informatics research on Kao (Stylized Signature). DH (2023)
Yuchen Zheng, Brian Kenji Iwana, Muhammad Imran Malik, Sheraz Ahmed, Wataru Ohyama, Seiichi Uchida
Learning the micro deformations by max-pooling for offline signature verification. Pattern Recognit. 118 (2021)
Zhi Wang, Hideyasu Sai, Kazuo Ogiwara, Wataru Ohyama, Daishi Watabe, Yukimichi Saitou, Masayoshi Wada
Joystick Car Drive System and its Application to Self-driving Microbus. IECON (2020)
Wataru Ohyama, Yuta Somada, Nobu C. Shirai, Tetsushi Wakabayashi
Discriminative Metric Learning with Convolutional Feature Descriptors for Age-Invariant Face Recognition and Verification. IW-FCV (2020)
Daisuke Harada, Ryoma Bise, Hiroki Tokunaga, Wataru Ohyama, Sanae Oka, Toshihiko Fujimori, Seiichi Uchida
Scribbles for Metric Learning in Histological Image Segmentation. EMBC (2019)
Takeo Ishihara, Kento Morita, Nobu C. Shirai, Tetsushi Wakabayashi, Wataru Ohyama
Chart-Type Classification Using Convolutional Neural Network for Scholarly Figures. ACPR (2) (2019)
Yosuke Onitsuka, Wataru Ohyama, Seiichi Uchida
Training Convolutional Autoencoders with Metric Learning. ICDAR (2019)
Yuchen Zheng, Wataru Ohyama, Brian Kenji Iwana, Seiichi Uchida
Capturing Micro Deformations from Pooling Layers for Offline Signature Verification. ICDAR (2019)
Yan Zheng, Yuchen Zheng, Wataru Ohyama, Daiki Suehiro, Seiichi Uchida
RankSVM for Offline Signature Verification. ICDAR (2019)
Joonho Lee, Hideaki Hayashi, Wataru Ohyama, Seiichi Uchida
Page Segmentation using a Convolutional Neural Network with Trainable Co-Occurrence Features. ICDAR (2019)
Wataru Ohyama, Masakazu Suzuki, Seiichi Uchida
Detecting Mathematical Expressions in Scientific Document Images Using a U-Net Trained on a Diverse Dataset. IEEE Access 7 (2019)
Kazunori Aoki, Wataru Ohyama, Tetsushi Wakabayashi
Extraction and Recognition of Shoe Logos with a Wide Variety of Appearance Using Two-Stage Classifiers. IEICE Trans. Inf. Syst. (5) (2018)
Seiya Iwata, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Recognition and connection of moving captions in Arabic TV news. ASAR (2017)
Kazunori Aoki, Wataru Ohyama, Tetsushi Wakabayashi
Automatic extraction and recognition of shoe logos with a wide variety of appearance. MVA (2017)
Keg Matsuda, Wataru Ohyama, Tetsushi Wakabayashi
Multilingual-Signature Verification by Verifier Fusion Using Random Forests. ACPR (2017)
Wataru Ohyama, Seiya Iwata, Tetsushi Wakabayashi, Fumitaka Kimura
Detection and Recognition of Arabic Text in Video Frames. MOCR@ICDAR (2017)
Wataru Ohyama, Koushi Suzuki, Tetsushi Wakabayashi
Recognition and defect detection of dot-matrix text via variation-model based learning. QCAV (2017)
Yuta Somada, Wataru Ohyama, Tetsushi Wakabayashi
Age-Invariant Person Identification by Segmentation Verification of Face Image. ACPR (2017)
Keigo Matsuda, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Effective Random-Impostor Training for Combined Segmentation Signature Verification. ICFHR (2016)
Seiya Iwata, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Recognition and transition frame detection of Arabic news captions for video retrieval. ICPR (2016)
Wataru Ohyama, Yuuki Ogi, Tetsushi Wakabayashi, Fumitaka Kimura
Multilingual signature-verification by generalized combined segmentation verification. ICDAR (2015)
Wataru Ohyama, Soichiro Hotta, Tetsushi Wakabayashi
Spatiotemporal auto-correlation of grayscale gradient with importance map for cooking gesture recognition. ACPR (2015)
Kanta Kuramoto, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Efficient estimation of character normal direction for Camera-based OCR. ICDAR (2015)
Mizuki Ito, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Rotated face recognition by manifold learning with auto-associative neural network. FCV (2015)
Kanta Kuramoto, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Efficient three dimensional rotation estimation for camera-based OCR. MVA (2015)
Hayato Iwasa, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Facial features extraction by accelerated implementation of circular hough transform and appearance evaluation. FCV (2015)
Wataru Ohyama, Akihito Yamamoto, Tetsushi Wakabayashi, Fumitaka Kimura
Improving Accuracy of Printed Character Recognition Using Hexagonal Zoning of Directional Histogram Feature. ICPR (2014)
Koji Endo, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Performance Improvement of Dot-Matrix Character Recognition by Variation Model Based Learning. ACCV Workshops (2) (2014)
Yuta Kamihira, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Improvement of Japanese Signature Verification by Combined Segmentation Verification Approach. ACPR (2013)
Kanta Kuramoto, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Accuracy Improvement of Viewpoint-Free Scene Character Recognition by Rotation Angle Estimation. CBDAR (2013)
Yuta Kamihira, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Improvement of Japanese Signature Verification by Segmentation-Verification. ICDAR (2013)
Muhammad Imran Malik, Marcus Liwicki, Linda Alewijnse, Wataru Ohyama, Michael Blumenstein, Bryan Found
ICDAR 2013 Competitions on Signature Verification and Writer Identification for On- and Offline Skilled Forgeries (SigWiComp 2013). ICDAR (2013)
Xi Luo, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Automatic Chinese Text Classification Using Character-Based and Word-Based Approach. ICDAR (2013)
Takashi Ito, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Combination of Signature Verification Techniques by SVM. ICFHR (2012)
Yasutaka Ito, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Detection of eyes by circular Hough transform and histogram of gradient. ICPR (2012)
Ryo Narita, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
A study on three dimensional rotation-free character recognition and rotation angle estimation of characters. ICPR (2012)
Chen Chao, Naoka Masesako, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura, Kiyotsugu Sekioka
Motion Tracking of Local Myocardial Tissue Using a DP+E Tracking Method on M-mode Echocardiograms. ICETET (2012)
Lazaro S. P. Busagala, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Multiple Feature-Classifier Combination in Automated Text Classification. Document Analysis Systems (2012)
Xi Luo, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Impact of Word Segmentation Errors on Automatic Chinese Text Classification. Document Analysis Systems (2012)
Ryo Narita, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Three Dimensional Rotation-Free Recognition of Characters. ICDAR (2011)
Akihiro Kokawa, Lazaro S. P. Busagala, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
An Impact of OCR Errors on Automated Classification of OCR Japanese Texts with Parts-of-Speech Analysis. ICDAR (2011)
Xi Luo, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
A Study on Automatic Chinese Text Classification. ICDAR (2011)
Takuma Shimizu, Mariko Isami, Kenji Terada, Wataru Ohyama, Fumitaka Kimura
Color Recognition by Extended Color Space Method for 64-color 2-D Barcode. MVA (2011)
Yumiko Kawazoe, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Improvement of On-line Signature Verification Based on Gradient Features. ICFHR (2010)
Gudila Paul Moshi, Lazaro S. P. Busagala, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
An impact of linguistic features on automated classification of OCR texts. Document Analysis Systems (2010)
Lazaro S. P. Busagala, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Improving Automatic Text Classification by Integrated Feature Analysis. IEICE Trans. Inf. Syst. (4) (2008)
Fei Liu, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Improvement of Cadastral Map Assembling Based on GHT. MVA (2007)
Lazaro S. P. Busagala, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Integrated Feature Analysis For Automatic Text Classification. MLDM Posters (2007)
Nozomi Nakao, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Automatic Detection of Facial Midline as a Guide for Facial Feature Extraction. PRIS (2007)
Fei Liu, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Automatic Assembling of Cadastral Maps Based on Generalized Hough Transformation. Document Analysis Systems (2006)
Mayo Murata, Lazaro S. P. Busagala, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
The Impact of OCR Accuracy and Feature Transformation on Automatic Text Classification. Document Analysis Systems (2006)
Xuexian Han, Guowei Zu, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Accuracy Improvement of Automatic Text Classification Based on Feature Transformation and Multi-classifier Combination. AWCC (2004)
Guowei Zu, Mayo Murata, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
The Impact of OCR Accuracy on Automatic Text Classification. AWCC (2004)
Yimei Ding, Wataru Ohyama, Fumitaka Kimura, Malayappan Shridhar
Local slant estimation for handwritten English words. IWFHR (2004)
Meng Shi, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
A study on decision rule for Japanese dictation test. IWFHR (2004)
Takamasa Yokoi, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Eigenspace Method by Autoassociative Networks for Object Recognition. SSPR/SPR (2004)
Guowei Zu, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Accuracy improvement of automatic text classification based on feature transformation. ACM Symposium on Document Engineering (2003)
Shusaku Shimizu, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Mirror Image Learning for Autoassociative Neural Networks. ICDAR (2003)
Meng Shi, Tetsushi Wakabayashi, Wataru Ohyama, Fumitaka Kimura
Comparative Study on Mirror Image Learning (MIL) and GLVQ. ICPR (2) (2002)
Meng Shi, Tetsushi Wakabayashi, Wataru Ohyama, Fumitaka Kimura
Automatic Grading Prototype System for KANJI Dictation Test. ICPR (3) (2002)
Tetsushi Wakabayashi, Meng Shi, Wataru Ohyama, Fumitaka Kimura
A comparative study on mirror image learning and ALSM. IWFHR (2002)
Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura, Shinji Tsuruoka, Kiyotsugu Sekioka
Automatic Tracking of Local Myocardial Motion by Correlation Weighted Velocity Method. ICPR (1) (2002)
Meng Shi, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
Clustering with Projection Distance and Pseudo Bayes Discriminant Function for Handwritten Numeral Recognition. ICDAR (2001)
Meng Shi, Tetsushi Wakabayashi, Wataru Ohyama, Fumitaka Kimura
Mirror Image Learning for Handwritten Numeral Recognition. MLDM (2001)
Tetsushi Wakabayashi, Meng Shi, Wataru Ohyama, Fumitaka Kimura
Accuracy Improvement of Handwritten Numeral Recognition by Mirror Image Learning. ICDAR (2001)
Meng Shi, Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura
License Plate Recognition Using Associative Matching Based on Clique-Finding. MVA (2000)
Wataru Ohyama, Tetsushi Wakabayashi, Fumitaka Kimura, Shinji Tsuruoka, Kiyotsugu Sekioka
Automatic Left Ventricular Endocardium Detection in Echocardiograms Based on Ternary Thresholding Method. ICPR (2000)