Search Results for author: Chandi Witharana

Found 3 papers, 0 papers with code

Segment Anything Model Can Not Segment Anything: Assessing AI Foundation Model's Generalizability in Permafrost Mapping

no code implementations16 Jan 2024 Wenwen Li, Chia-Yu Hsu, Sizhe Wang, Yezhou Yang, Hyunho Lee, Anna Liljedahl, Chandi Witharana, Yili Yang, Brendan M. Rogers, Samantha T. Arundel, Matthew B. Jones, Kenton McHenry, Patricia Solis

To evaluate the performance of large AI vision models, especially Meta's Segment Anything Model (SAM), we implemented different instance segmentation pipelines that minimize the changes to SAM to leverage its power as a foundation model.

Instance Segmentation Semantic Segmentation

Real-time GeoAI for High-resolution Mapping and Segmentation of Arctic Permafrost Features

no code implementations8 Jun 2023 Wenwen Li, Chia-Yu Hsu, Sizhe Wang, Chandi Witharana, Anna Liljedahl

This paper introduces a real-time GeoAI workflow for large-scale image analysis and the segmentation of Arctic permafrost features at a fine-granularity.

Instance Segmentation Position +2

Using Deep Learning to Identify Utility Poles with Crossarms and Estimate Their Locations from Google Street View Images

no code implementations1 Aug 2018 Weixing Zhang, Chandi Witharana, Weidong Li, Chuanrong Zhang, Xiaojiang Li, and Jason Parent

The method combines the state-of-the-art DL object detection algorithm (i. e., the RetinaNet object detection algorithm) and a modified brute-force-based line-of-bearing (LOB, a LOB stands for the ray towards the location of the target [UPC at here] from the original location of the sensor [GSV mobile platform]) measurement method to estimate the locations of detected roadside UPCs from GSV.

object-detection Object Detection

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