no code implementations • 12 Dec 2024 • Faith Johnson, Ryan Meegan, Jack Lowry, Peter Oudemans, Kristin Dana
For interpretability, we create a 2D manifold of cranberry appearance by using a UMAP dimensionality reduction on ViT features.
no code implementations • 15 Nov 2024 • Faith Johnson, Bryan Bo Cao, Ashwin Ashok, Shubham Jain, Kristin Dana
Key to our approach is a memory proxy map (MPM), an intermediate representation of the environment learned in a self-supervised manner by the high-level manager agent that serves as a simplified memory, approximating what the agent has seen.
no code implementations • 22 Feb 2024 • Faith Johnson, Bryan Bo Cao, Kristin Dana, Shubham Jain, Ashwin Ashok
However, recent advancements in the visual navigation field face challenges due to the lack of human datasets in the real world for efficient supervised representation learning of the environments.
no code implementations • 19 Feb 2024 • Faith Johnson, Bryan Bo Cao, Ashwin Ashok, Shubham Jain, Kristin Dana
We introduce a new approach to visual navigation using feudal learning, which employs a hierarchical structure consisting of a worker agent, a mid-level manager, and a high-level manager.
no code implementations • 9 Oct 2023 • Faith Johnson, Kristin Dana
In this work, we explore the use of hierarchical reinforcement learning (HRL) for the task of temporal sequence prediction.
1 code implementation • MobiCom ISACom 2023 • Bryan Bo Cao, Abrar Alali, Hansi Liu, Nicholas Meegan, Marco Gruteser, Kristin Dana, Ashwin Ashok, Shubham Jain
Tracking subjects in videos is one of the most widely used functions in camera-based IoT applications such as security surveillance, smart city traffic safety enhancement, vehicle to pedestrian communication and so on.
no code implementations • 31 Aug 2023 • Faith Johnson, Jack Lowry, Kristin Dana, Peter Oudemans
Agricultural domains are being transformed by recent advances in AI and computer vision that support quantitative visual evaluation.
no code implementations • ICCV 2023 • Peri Akiva, Jing Huang, Kevin J Liang, Rama Kovvuri, Xingyu Chen, Matt Feiszli, Kristin Dana, Tal Hassner
Understanding the visual world from the perspective of humans (egocentric) has been a long-standing challenge in computer vision.
no code implementations • 2 Dec 2022 • Faith Johnson, Kristin Dana
Understanding pedestrian behavior patterns is a key component to building autonomous agents that can navigate among humans.
no code implementations • 22 Nov 2022 • Hansi Liu, Kristin Dana, Marco Gruteser, HongSheng Lu
During inference, it generates refined position estimations based only on pedestrians' phone data that consists of GPS, IMU and FTM.
no code implementations • 11 Oct 2022 • Nicholas Meegan, Hansi Liu, Bryan Cao, Abrar Alali, Kristin Dana, Marco Gruteser, Shubham Jain, Ashwin Ashok
We introduce ViFiCon, a self-supervised contrastive learning scheme which uses synchronized information across vision and wireless modalities to perform cross-modal association.
1 code implementation • IEEE International Conference on Sensing, Communication, and Networking 2022 • Bryan Bo Cao, Abrar Alali, Hansi Liu, Nicholas Meegan, Marco Gruteser, Kristin Dana, Ashwin Ashok, Shubham Jain
ViTag associates a sequence of vision tracker generated bounding boxes with Inertial Measurement Unit (IMU) data and Wi-Fi Fine Time Measurements (FTM) from smartphones.
1 code implementation • ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) 2022 • Hansi Liu, Abrar Alali, Mohamed Ibrahim, Bryan Bo Cao, Nicholas Meegan, Hongyu Li, Marco Gruteser, Shubham Jain, Kristin Dana, Ashwin Ashok, Bin Cheng, HongSheng Lu
In this paper, we present Vi-Fi, a multi-modal system that leverages a user’s smartphone WiFi Fine Timing Measurements (FTM) and inertial measurement unit (IMU) sensor data to associate the user detected on a camera footage with their corresponding smartphone identifier (e. g. WiFi MAC address).
no code implementations • CVPR 2021 • Tomoki Ichikawa, Matthew Purri, Ryo Kawahara, Shohei Nobuhara, Kristin Dana, Ko Nishino
That is, we show that the unique polarization pattern encoded in the polarimetric appearance of an object captured under the sky can be decoded to reveal the surface normal at each pixel.
1 code implementation • 18 Jun 2021 • Peri Akiva, Kristin Dana
The costly process of obtaining semantic segmentation labels has driven research towards weakly supervised semantic segmentation (WSSS) methods, using only image-level, point, or box labels.
Weakly supervised Semantic Segmentation
Weakly-Supervised Semantic Segmentation
no code implementations • 8 Nov 2020 • Peri Akiva, Benjamin Planche, Aditi Roy, Kristin Dana, Peter Oudemans, Michael Mars
Toward this goal, we propose two main deep learning-based modules for: 1) cranberry fruit segmentation to delineate the exact fruit regions in the cranberry field image that are exposed to sun, 2) prediction of cloud coverage conditions and sun irradiance to estimate the inner temperature of exposed cranberries.
no code implementations • 11 Oct 2020 • Peri Akiva, Matthew Purri, Kristin Dana, Beth Tellman, Tyler Anderson
We demonstrate that H2O-Net outperforms the state-of-the-art semantic segmentation methods on satellite imagery by 10% and 12% pixel accuracy and mIoU respectively for the task of flood segmentation.
no code implementations • 22 Sep 2020 • Jia Xue, Matthew Purri, Kristin Dana
We demonstrate the increased performance of AngLNet over prior state-of-the-art in material segmentation from satellite imagery.
no code implementations • 11 Jun 2020 • Faith Johnson, Kristin Dana
The steering angle at a particular time instance is the worker network output which is regulated by the manager's high level task.
1 code implementation • ECCV 2020 • Matthew Purri, Kristin Dana
The connection between visual input and tactile sensing is critical for object manipulation tasks such as grasping and pushing.
no code implementations • 18 Apr 2020 • Peri Akiva, Kristin Dana, Peter Oudemans, Michael Mars
Precision agriculture has become a key factor for increasing crop yields by providing essential information to decision makers.
no code implementations • 17 Apr 2019 • Matthew Purri, Jia Xue, Kristin Dana, Matthew Leotta, Dan Lipsa, Zhixin Li, Bo Xu, Jie Shan
The residuals are computed by differencing the sparse-sampled reflectance function with a dictionary of pre-defined dense-sampled reflectance functions.
1 code implementation • CVPR 2018 • Jia Xue, Hang Zhang, Kristin Dana
The GTOS database (comprised of over 30, 000 images of 40 classes of ground terrain in outdoor scenes) enables supervised recognition.
12 code implementations • CVPR 2018 • Hang Zhang, Kristin Dana, Jianping Shi, Zhongyue Zhang, Xiaogang Wang, Ambrish Tyagi, Amit Agrawal
In this paper, we explore the impact of global contextual information in semantic segmentation by introducing the Context Encoding Module, which captures the semantic context of scenes and selectively highlights class-dependent featuremaps.
Ranked #7 on
Semantic Segmentation
on PASCAL VOC 2012 test
6 code implementations • 20 Mar 2017 • Hang Zhang, Kristin Dana
Despite the rapid progress in style transfer, existing approaches using feed-forward generative network for multi-style or arbitrary-style transfer are usually compromised of image quality and model flexibility.
12 code implementations • CVPR 2017 • Hang Zhang, Jia Xue, Kristin Dana
The representation is orderless and therefore is particularly useful for material and texture recognition.
no code implementations • CVPR 2017 • Jia Xue, Hang Zhang, Kristin Dana, Ko Nishino
We realize this by developing a framework for differential angular imaging, where small angular variations in image capture provide an enhanced appearance representation and significant recognition improvement.
no code implementations • 6 Apr 2016 • Eric Wengrowski, Kristin Dana, Marco Gruteser, Narayan Mandayam
We sample from the resulting metamer sets to find color steps for each base color to embed a binary message into an arbitrary image with reduced visible artifacts.
no code implementations • 25 Mar 2016 • Hang Zhang, Kristin Dana, Ko Nishino
In this work, we address the question of what reflectance can reveal about materials in an efficient manner.
no code implementations • CVPR 2015 • Hang Zhang, Kristin Dana, Ko Nishino
Reflectance offers a unique signature of the material but is challenging to measure and use for recognizing materials due to its high-dimensionality.