• Journal of Aerospace System Engineering
• /
• v.16 no.5
• /
• pp.70-77
• /
• 2022

This paper proposes database generation and management system for small-pixelized airborne target recognition. The proposed system has five main features: 1) image extraction from in-flight test video frames, 2) automatic image archiving, 3) image data labeling and Meta data annotation, 4) virtual image data generation based on color channel convert conversion and seamless cloning and 5) HOG/LBP-based tiny-pixelized target augmented image data. The proposed framework is Python-based PyQt5 and has an interface that includes OpenCV. Using video files collected from flight tests, an image dataset for airborne target recognition on generates by using the proposed system and system input.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2021.05a
• /
• pp.31-33
• /
• 2021

In this paper, a dataset was designed and built to improve the accuracy of finger direction detection using an object detection algorithm based on You Only Look Once (YOLO). In order to improve the object detection performance, about 200 finger image data sets were trained, and to confirm that the detection accuracy differs from each other according to the angle of the palm, 50 comparison groups of different angles were configured and tested. As a result of the experiment, it was confirmed that the detection accuracy of palm located in a direction close to 90° is higher than that of other angles.

• Journal of Internet Computing and Services
• /
• v.24 no.4
• /
• pp.85-92
• /
• 2023

Deep learning applications are increasingly being leveraged for disease detection tasks in medical imaging modalities such as X-ray, Computed Tomography (CT), and Magnetic Resonance Imaging (MRI). Most data-centric deep learning challenges necessitate the use of supervised learning methodologies to attain high accuracy and to facilitate performance evaluation through comparison with the ground truth. Supervised learning mandates a substantial amount of image and label sets, however, procuring an adequate volume of medical imaging data for training is a formidable task. Various data augmentation strategies can mitigate the underfitting issue inherent in supervised learning-based models that are trained on limited medical image and label sets. This research investigates the enhancement of a deep learning-based rib fracture segmentation model and the efficacy of data augmentation techniques such as left-right flipping, rotation, and scaling. Augmented dataset with L/R flipping and rotations(30°, 60°) increased model performance, however, dataset with rotation(90°) and ⨯0.5 rescaling decreased model performance. This indicates the usage of appropriate data augmentation methods depending on datasets and tasks.

• Smart Media Journal
• /
• v.9 no.3
• /
• pp.41-45
• /
• 2020

Recently, artificial intelligence (AI) and the Internet of things (IoT), which are represented by machine learning and deep learning among IT technologies related to the Fourth Industrial Revolution, are applied to our real life in various fields through various researches. In this paper, IoT and AI using object recognition technology are applied to classify clothing. For this purpose, the image dataset was taken using webcam and raspberry pi, and GoogLeNet, a convolutional neural network artificial intelligence network, was applied to transfer the photographed image data. The clothing image dataset was classified into two categories (shirtwaist, trousers): 900 clean images, 900 loss images, and total 1800 images. The classification measurement results showed that the accuracy of the clean clothing image was about 97.78%. In conclusion, the study confirmed the applicability of other objects using artificial intelligence networks on the Internet of Things based platform through the measurement results and the supplementation of more image data in the future.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.698-700
• /
• 2023

최근 들어, 미용 상품을 선택하기 전에 자신의 피부 타입과 상태를 정확히 파악하고 맞춤형 상품을 선택하고자 하는 수요가 증가하고 있다. 이에 따라 피부 상태 측정을 위한 기술적 요소의 중요성이 더욱 두드러지고 있다. 그러나 현재까지 피부 상태 측정을 위한 데이터셋이 한국인을 대상으로 측정한 데이터셋이 없는 실정이다. 본 연구에서는 한국인의 피부 상태를 정밀하게 분석하기 위해 고해상도 디지털 카메라로 촬영된 이미지, 정밀 피부측정 장비를 활용하여 측정한 정밀 값, 그리고 피부과 전문의가 진단한 피부상태 진단 등급 데이트를 통합하여 제공을 한다. 추후 제작한 데이터셋을 활용하여 개인 맞춤형 미용상품 추천과 개발 등 다양한 분야에 활용하고자 한다.

• Journal of the Korean Society for Library and Information Science
• /
• v.54 no.2
• /
• pp.419-434
• /
• 2020

The purpose of the study is to design and propose metadata standard for building AI training dataset of landmark images. In order to achieve the purpose, we first examined and analyzed the state of art of the types of image retrieval systems and their indexing methods, comprehensively. We then investigated open training dataset and machine learning tools for image object recognition. Sequentially, we selected metadata elements optimized for the AI training dataset of landmark images and defined the input data for each element. We then concluded the study with implications and suggestions for the development of application services using the results of the study.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2018.05a
• /
• pp.471-473
• /
• 2018

딥러닝은 이미지 분류 및 객체 검출과 같은 여러 컴퓨터 비전 관련 작업에 성공적으로 사용되었다. 손 검출은 인간 컴퓨터 상호작용 분야에서 손 분류 및 손 동작 인식을 위한 매우 중요한 부분이며 딥러닝을 사용하여 시도되었다. 본 연구에서는 손 데이터 셋을 이용하여 컨볼루션 신경망을 훈련시킨 다음 학습된 특징을 시각화하고, CNN 아키텍처와 손 데이터 셋의 결과를 각각 살펴보며 손 검출에 대한 이해를 제공한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2021.05a
• /
• pp.165-168
• /
• 2021

Recently, the spread of deep learning environments has increased the importance of dataset generation. In this paper, we aim to design and implement a method for capturing rotating images of objects and performing object tracking on them for efficient dataset generation. The method implemented in this paper is to obtain image data by rotating objects to capture multiple angles of objects, detect and track objects through background removal and difference image processing techniques, showing them on screen to monitor object tracking results in the current frame. It was then implemented to return object location data within the image for use as a dataset.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2020.07a
• /
• pp.36-39
• /
• 2020

최근 딥 러닝을 이용한 방법들이 이미지 분류에서 뛰어난 성능을 보임에 따라, 복잡한 특징을 담고 있는 얼굴 이미지에 대해 이를 적용하려는 시도가 늘어나고 있다. 특히, 이미지로부터 주요한 특징들을 추출하여 간결하게 이미지를 대표할 수 있는 이미지 기술자 (Image descriptor)를 딥 러닝을 통해 생성하는 연구가 인기를 끌고 있다. 이는 딥 러닝 끝 단에 있는 Fully-connected layer 의 출력으로 얻을 수 있으며 이미지의 의미론적 상관관계를 이용하여 학습된다. 구체적으로, 이미지 기술자는 실수형 벡터 데이터로서, 한 장의 이미지를 수치화 하여 비슷한 이미지 사이에는 벡터 거리가 가깝게, 서로 다른 이미지 사이에는 벡터 거리가 멀게 구성된다. 본 연구에서는 미리 학습된 인공 신경망을 통과시켜 얻은 얼굴 이미지 기술자를 활용하여 멤버 분류를 위한 두 개의 인공 신경망을 학습하는 것을 목표로 한다. 제안된 방법을 검증하기 위해 얼굴 인식에 널리 사용되는 벤치 마크 데이터셋을 활용하였고, 그 결과 제안된 방법이 높은 정확도로 멤버를 분류할 수 있다는 것을 확인하였다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.23 no.5
• /
• pp.533-539
• /
• 2019

This study proposes a malware classification model that can handle arbitrary length input data using the Microsoft Malware Classification Challenge dataset. We are based on imaging existing data from malware. The proposed model generates a lot of images when malware data is large, and generates a small image of small data. The generated image is learned as time series data by Dynamic RNN. The output value of the RNN is classified into malware by using only the highest weighted output by applying the Attention technique, and learning the RNN output value by Residual CNN again. Experiments on the proposed model showed a Micro-average F1 score of 92% in the validation data set. Experimental results show that the performance of a model capable of learning and classifying arbitrary length data can be verified without special feature extraction and dimension reduction.