Search Results for author: Stefan Oehmcke

Found 13 papers, 3 papers with code

Tree Counting by Bridging 3D Point Clouds with Imagery

no code implementations4 Mar 2024 Lei LI, Tianfang Zhang, Zhongyu Jiang, Cheng-Yen Yang, Jenq-Neng Hwang, Stefan Oehmcke, Dimitri Pierre Johannes Gominski, Fabian Gieseke, Christian Igel

We leverage the fusion of three-dimensional LiDAR measurements and 2D imagery to facilitate the accurate counting of trees.

Management

Predicting urban tree cover from incomplete point labels and limited background information

no code implementations20 Nov 2023 HUI ZHANG, Ankit Kariryaa, Venkanna Babu Guthula, Christian Igel, Stefan Oehmcke

This paper studies how to combine accurate point labels of urban trees along streets with crowd-sourced annotations from an open geographic database to delineate city trees in remote sensing images, a task which is challenging even for humans.

Semantic Segmentation

BuildSeg: A General Framework for the Segmentation of Buildings

no code implementations15 Jan 2023 Lei LI, Tianfang Zhang, Stefan Oehmcke, Fabian Gieseke, Christian Igel

Building segmentation from aerial images and 3D laser scanning (LiDAR) is a challenging task due to the diversity of backgrounds, building textures, and image quality.

Remember to correct the bias when using deep learning for regression!

no code implementations30 Mar 2022 Christian Igel, Stefan Oehmcke

We suggest to adjust the bias of the machine learning model after training as a default postprocessing step, which efficiently solves the problem.

regression

Deep Learning Based 3D Point Cloud Regression for Estimating Forest Biomass

no code implementations21 Dec 2021 Stefan Oehmcke, Lei LI, Katerina Trepekli, Jaime Revenga, Thomas Nord-Larsen, Fabian Gieseke, Christian Igel

Quantification of forest biomass stocks and their dynamics is important for implementing effective climate change mitigation measures.

Management regression

Creating cloud-free satellite imagery from image time series with deep learning

no code implementations1 Nov 2020 Stefan Oehmcke, Tzu Hsin Karen Chen, Alexander V Prishchepov, Fabian Gieseke

The model uses supplementary data, namely the approximate cloud coverage of input images, the temporal distance to the target time, and a missing data mask for each input time step.

Image Generation Time Series +1

Attentional Feature Fusion

2 code implementations29 Sep 2020 Yimian Dai, Fabian Gieseke, Stefan Oehmcke, Yiquan Wu, Kobus Barnard

Feature fusion, the combination of features from different layers or branches, is an omnipresent part of modern network architectures.

Image Classification

Attention as Activation

1 code implementation15 Jul 2020 Yimian Dai, Stefan Oehmcke, Fabian Gieseke, Yiquan Wu, Kobus Barnard

Inspired by their similarity, we propose a novel type of activation units called attentional activation (ATAC) units as a unification of activation functions and attention mechanisms.

Magnitude and Uncertainty Pruning Criterion for Neural Networks

no code implementations10 Dec 2019 Vinnie Ko, Stefan Oehmcke, Fabian Gieseke

One important advantage of our M&U pruning criterion is that it is scale-invariant, a phenomenon that the magnitude-based pruning criterion suffers from.

End-To-End Input Selection for Deep Neural Networks

no code implementations25 Sep 2019 Stefan Oehmcke, Fabian Gieseke

Both the associated selection masks as well as the neural network are trained simultaneously such that a good model performance is achieved while, at the same time, only a minimal amount of data is selected.

Input Selection for Bandwidth-Limited Neural Network Inference

1 code implementation11 Jun 2019 Stefan Oehmcke, Fabian Gieseke

The model as well as the associated selection masks are trained simultaneously such that a good model performance is achieved while only a minimal amount of data is selected.

Astronomy BIG-bench Machine Learning

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