Search Results for author: Alper Yilmaz

Found 19 papers, 4 papers with code

SegFormer3D: an Efficient Transformer for 3D Medical Image Segmentation

1 code implementation15 Apr 2024 Shehan Perera, Pouyan Navard, Alper Yilmaz

Furthermore, in the context of limited datasets, often encountered in medical imaging, larger models can present hurdles in both model generalization and convergence.

Image Segmentation Medical Image Segmentation +2

Geometric Wide-Angle Camera Calibration: A Review and Comparative Study

no code implementations15 Jun 2023 Jianzhu Huai, Yuan Zhuang, Yuxin Shao, Grzegorz Jozkow, Binliang Wang, Yijia He, Alper Yilmaz

These tests reveal the strengths and weaknesses of these camera models, as well as the repeatability of these GCC tools.

Camera Calibration

UAS Navigation in the Real World Using Visual Observation

no code implementations25 Aug 2022 Yuci Han, Jianli Wei, Alper Yilmaz

Once the agent learns the navigation policy, which means 'familiarized themselves with the environment', we let the UAS fly in the real world to recognize the landmarks using image matching method and take action according to the learned policy.

Landmark Recognition Reinforcement Learning (RL) +1

A Gis Aided Approach for Geolocalizing an Unmanned Aerial System Using Deep Learning

1 code implementation25 Aug 2022 Jianli Wei, Deniz Karakay, Alper Yilmaz

For an unmanned aerial system (UAS), geolocalization ability is an extremely important necessity which is achieved using Inertial Navigation System (INS) with the GPS at its heart.

Homography Estimation

How important are socioeconomic factors for hurricane performance of power systems? An analysis of disparities through machine learning

no code implementations18 Aug 2022 Alexys Herleym Rodríguez Avellaneda, Abdollah Shafieezadeh, Alper Yilmaz

This paper investigates whether socioeconomic factors are important for the hurricane performance of the electric power system in Florida.

Learning to Drive Using Sparse Imitation Reinforcement Learning

no code implementations24 May 2022 Yuci Han, Alper Yilmaz

In this paper, we propose Sparse Imitation Reinforcement Learning (SIRL), a hybrid end-to-end control policy that combines the sparse expert driving knowledge with reinforcement learning (RL) policy for autonomous driving (AD) task in CARLA simulation environment.

Autonomous Driving reinforcement-learning +2

Engineering deep learning methods on automatic detection of damage in infrastructure due to extreme events

no code implementations1 May 2022 Yongsheng Bai, Bing Zha, Halil Sezen, Alper Yilmaz

In the third and fourth studies, end-to-end networks are developed and tested as a new solution to directly detect cracks and spalling in the image collections of recent large earthquakes.

Network Comparison Study of Deep Activation Feature Discriminability with Novel Objects

no code implementations8 Feb 2022 Michael Karnes, Alper Yilmaz

The results of this study characterize the Mahalanobis distances and cosine similarities between DeCAF object manifolds across two visual object tracking benchmark data sets.

Object Visual Object Tracking

Automatic Displacement and Vibration Measurement in Laboratory Experiments with A Deep Learning Method

no code implementations10 Sep 2021 Yongsheng Bai, Ramzi M. Abduallah, Halil Sezen, Alper Yilmaz

This paper proposes a pipeline to automatically track and measure displacement and vibration of structural specimens during laboratory experiments.

DeepTracks: Geopositioning Maritime Vehicles in Video Acquired from a Moving Platform

no code implementations2 Sep 2021 Jianli Wei, Guanyu Xu, Alper Yilmaz

Geopositioning and tracking a moving boat at sea is a very challenging problem, requiring boat detection, matching and estimating its GPS location from imagery with no common features.

valid

A volumetric change detection framework using UAV oblique photogrammetry - A case study of ultra-high-resolution monitoring of progressive building collapse

no code implementations5 Aug 2021 Ningli Xu, Debao Huang, Shuang Song, Xiao Ling, Chris Strasbaugh, Alper Yilmaz, Halil Sezen, Rongjun Qin

In this paper, we present a case study that performs an unmanned aerial vehicle (UAV) based fine-scale 3D change detection and monitoring of progressive collapse performance of a building during a demolition event.

Change Detection Pose Estimation +2

POCFormer: A Lightweight Transformer Architecture for Detection of COVID-19 Using Point of Care Ultrasound

no code implementations20 May 2021 Shehan Perera, Srikar Adhikari, Alper Yilmaz

The rapid and seemingly endless expansion of COVID-19 can be traced back to the inefficiency and shortage of testing kits that offer accurate results in a timely manner.

Deep Transformer Networks for Time Series Classification: The NPP Safety Case

no code implementations9 Apr 2021 Bing Zha, Alessandro Vanni, Yassin Hassan, Tunc Aldemir, Alper Yilmaz

An advanced temporal neural network referred to as the Transformer is used within a supervised learning fashion to model the time-dependent NPP simulation data and to infer whether a given sequence of events leads to core damage or not.

General Classification Time Series +2

End-to-end Deep Learning Methods for Automated Damage Detection in Extreme Events at Various Scales

no code implementations5 Nov 2020 Yongsheng Bai, Halil Sezen, Alper Yilmaz

Robust Mask R-CNN (Mask Regional Convolu-tional Neural Network) methods are proposed and tested for automatic detection of cracks on structures or their components that may be damaged during extreme events, such as earth-quakes.

Data Augmentation

Map-Based Temporally Consistent Geolocalization through Learning Motion Trajectories

no code implementations13 Oct 2020 Bing Zha, Alper Yilmaz

The experiments show that the motion trajectories can be learned by training an recurrent neural network, and temporally consistent geolocation can be predicted with both of the proposed strategies.

Visual Odometry

UAVid: A Semantic Segmentation Dataset for UAV Imagery

3 code implementations24 Oct 2018 Ye Lyu, George Vosselman, Gui-Song Xia, Alper Yilmaz, Michael Ying Yang

There already exist several semantic segmentation datasets for comparison among semantic segmentation methods in complex urban scenes, such as the Cityscapes and CamVid datasets, where the side views of the objects are captured with a camera mounted on the driving car.

4k Autonomous Driving +5

MTLE: A Multitask Learning Encoder of Visual Feature Representations for Video and Movie Description

1 code implementation19 Sep 2018 Oliver Nina, Washington Garcia, Scott Clouse, Alper Yilmaz

Many of the current state of the art methods for video captioning and movie description rely on simple encoding mechanisms through recurrent neural networks to encode temporal visual information extracted from video data.

Video Captioning

4d isip: 4d implicit surface interest point detection

no code implementations10 May 2017 Shirui Li, Alper Yilmaz, Changlin Xiao, Hua Li

The TSDF represents the distance between the spatial points and object surface points which is an implicit surface representation.

Interest Point Detection Object

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