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Multi-Environment Model Estimation for Motility Analysis of Caenorhabditis elegans

Figure 4

User input and nematode segmentation.

Figures (a) through (d) illustrate the stages of the segmentation process in MEME for a sample environment (source: Supplemental Video in Lockery et al. [21]). (a) The user selects the boundary of the nematode on a given image. From this manual segmentation, the distribution of nematode features can be extracted. (b) Distribution of pixel intensities from the nematode region. Here, for illustrative purposes. (c) The background scene is partitioned into a grid, where each cell corresponds to a particular pixel block. Two arbitrary cells are labeled for clarity; their corresponding intensity distributions are shown in (b). For both the nematode and the cells, MOG parameters are then learned. (d) Representation of the MOG models for the nematode () and the two background cells ( and ).

Figure 4

doi: https://doi.org/10.1371/journal.pone.0011631.g004