WEAKLY SUPERVISED DEEP CONVOLUTIONAL NETWORKS FOR FINE-GRAINED OBJECT RECOGNITION IN MULTISPECTRAL IMAGES


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Aygunes B., AKSOY S., CİNBİŞ R. G.

IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Yokohama, Japan, 28 July - 02 August 2019, pp.1478-1481 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/igarss.2019.8899170
  • City: Yokohama
  • Country: Japan
  • Page Numbers: pp.1478-1481
  • Keywords: Weakly supervised learning, object recognition, multispectral image analysis
  • Middle East Technical University Affiliated: Yes

Abstract

The challenging task of training object detectors for fine-grained classification faces additional difficulties when there are registration errors between the image data and the ground truth. We propose a weakly supervised learning methodology for the classification of 40 types of trees by using fixed-sized multispectral images with a class label but with no exact knowledge of the object location. Our approach consists of an end-to-end trainable convolutional neural network with separate branches for learning class-specific and location-specific scoring of image regions. Comparative experiments show that the proposed method simultaneously learns to detect and classify the objects of interest with high accuracy.