TASK	DATASET	MODEL	METRIC NAME	METRIC VALUE	GLOBAL RANK
Generalized Zero-Shot Learning	S3DIS	3DGenZ	HmIoU	12.9	# 1
Generalized Zero-Shot Learning	ScanNet	3DGenZ	HmIoU	12.5	# 1
Generalized Zero-Shot Learning	SemanticKITTI	3DGenZ	HmIoU	17.1	# 1

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Generative Zero-Shot Learning for Semantic Segmentation of 3D Point Clouds

13 Aug 2021 · Björn Michele, Alexandre Boulch, Gilles Puy, Maxime Bucher, Renaud Marlet ·

While there has been a number of studies on Zero-Shot Learning (ZSL) for 2D images, its application to 3D data is still recent and scarce, with just a few methods limited to classification. We present the first generative approach for both ZSL and Generalized ZSL (GZSL) on 3D data, that can handle both classification and, for the first time, semantic segmentation. We show that it reaches or outperforms the state of the art on ModelNet40 classification for both inductive ZSL and inductive GZSL. For semantic segmentation, we created three benchmarks for evaluating this new ZSL task, using S3DIS, ScanNet and SemanticKITTI. Our experiments show that our method outperforms strong baselines, which we additionally propose for this task.

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Generalized Zero-Shot Learning

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Semantic Segmentation

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ScanNet

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S3DIS

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Task	Dataset	Model	Metric Name	Metric Value	Global Rank	Benchmark
Generalized Zero-Shot Learning	S3DIS	3DGenZ	HmIoU	12.9	# 1	Compare
Generalized Zero-Shot Learning	ScanNet	3DGenZ	HmIoU	12.5	# 1	Compare
Generalized Zero-Shot Learning	SemanticKITTI	3DGenZ	HmIoU	17.1	# 1	Compare

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