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Conference Papers Year : 2020

Patch-based CNN evaluation for bark classification

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Abstract

The identification of tree species from bark images is a challenging computer vision problem. However, even in the era of deep learning today, bark recognition continues to be explored by traditional methods using time-consuming handcrafted features, mainly due to the problem of limited data. In this work, we implement a patch-based convolutional neural network alternative for analyzing a challenging bark dataset Bark-101, comprising of 2587 images from 101 classes. We propose to apply image re-scaling during the patch extraction process to compensate for the lack of sufficient data. Individual patch-level predictions from fine-tuned CNNs are then combined by classical majority voting to obtain image-level decisions. Since ties can often occur in the voting process, we investigate various tie-breaking strategies from ensemble-based classifiers. Our study outperforms the classification accuracy achieved by traditional methods applied to Bark-101, thus demonstrating the feasibility of applying patch-based CNNs to such challenging datasets.
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Dates and versions

hal-02969811 , version 1 (16-10-2020)
hal-02969811 , version 2 (19-10-2020)

Identifiers

  • HAL Id : hal-02969811 , version 2

Cite

Debaleena Misra, Carlos F Crispim-Junior, Laure Tougne. Patch-based CNN evaluation for bark classification. Workshop on Computer Vision Problems in Plant Phenotyping, Aug 2020, Edinburgh, United Kingdom. ⟨hal-02969811v2⟩
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