A Robust Morphological Approach for Semantic Segmentation of Very High Resolution Images

• URL: http://arxiv.org/abs/2208.01254v2
• Date: Thu, 26 Oct 2023 09:33:29 GMT
• Title: A Robust Morphological Approach for Semantic Segmentation of Very High Resolution Images
• Authors: Siddharth Saravanan, Aditya Challa, Sravan Danda
• Abstract summary: We develop a robust pipeline that seamlessly extends any existing semantic segmentation algorithm to high resolution images. Our method does not require the ground truth annotations of the high resolution images. We show that the semantic segmentation results obtained by our method beat the existing state-of-the-art algorithms on high-resolution images.
• Score: 2.2230089845369085
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: State-of-the-art methods for semantic segmentation of images involve computationally intensive neural network architectures. Most of these methods are not adaptable to high-resolution image segmentation due to memory and other computational issues. Typical approaches in literature involve design of neural network architectures that can fuse global information from low-resolution images and local information from the high-resolution counterparts. However, architectures designed for processing high resolution images are unnecessarily complex and involve a lot of hyper parameters that can be difficult to tune. Also, most of these architectures require ground truth annotations of the high resolution images to train, which can be hard to obtain. In this article, we develop a robust pipeline based on mathematical morphological (MM) operators that can seamlessly extend any existing semantic segmentation algorithm to high resolution images. Our method does not require the ground truth annotations of the high resolution images. It is based on efficiently utilizing information from the low-resolution counterparts, and gradient information on the high-resolution images. We obtain high quality seeds from the inferred labels on low-resolution images using traditional morphological operators and propagate seed labels using a random walker to refine the semantic labels at the boundaries. We show that the semantic segmentation results obtained by our method beat the existing state-of-the-art algorithms on high-resolution images. We empirically prove the robustness of our approach to the hyper parameters used in our pipeline. Further, we characterize some necessary conditions under which our pipeline is applicable and provide an in-depth analysis of the proposed approach.

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