Dataset Generation and Bonobo Classification from Weakly Labelled Videos
This paper presents a bonobo detection and classification pipeline built from
the commonly used machine learning methods. Such application is motivated by
the need to test bonobos in their enclosure using touch screen devices without
human assistance. This work introduces a newly acquired dataset based on bonobo
recordings generated semi-automatically. The recordings are weakly labelled and
fed to a macaque detector in order to spatially detect the individual present
in the video. Handcrafted features coupled with different classification
algorithms and deep-learning methods using a ResNet architecture are
investigated for bonobo identification. Performance is compared in terms of
classification accuracy on the splits of the database using different data
separation methods. We demonstrate the importance of data preparation and how a
wrong data separation can lead to false good results. Finally, after a
meaningful separation of the data, the best classification performance is
obtained using a fine-tuned ResNet model and reaches 75% of accuracy.