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Semantic Segmentation based on Variational Methods

Grant number: 19/08589-0
Support type:Scholarships in Brazil - Master
Effective date (Start): September 01, 2019
Effective date (End): November 30, 2021
Field of knowledge:Physical Sciences and Mathematics - Computer Science - Computer Systems
Principal researcher:Gerberth Adín Ramírez Rivera
Grantee:Rodrigo Fumihiro de Azevedo Kanehisa
Home Institution: Instituto de Computação (IC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


Semantic segmentation is one of the great open-ended problems in computer vision. This problem consists in classifying each pixel present in an image, delimiting an object. Convolutional neural networks have been shown to be efficient in detecting, identifying and segmenting objects in images. However, during the segmentation process, some problems arise, such as loss of spatial information and low resolution of feature maps. These problems lead to rough or noisy segmentations due to the uncertainties on the data. One way to counter these problems is to use statistical methods in conjunction with neural networks. This project proposes neural networks based on variational methods for semantic segmentation. Variational methods present a solution to map the contents of the image into a latent space that represents distributions of the data. Thus, allowing the network to handle uncertainty and model more complex information. We propose to use a Mixture of Gaussian Models to tackle the complex information. We will evaluate our proposals within existing databases and compare against existing methods on standard benchmarks for semantic segmentation. (AU)

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