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. 2017 Nov 8;10(4):10.16910/jemr.10.4.2. doi: 10.16910/jemr.10.4.2

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An illustrative example of locating an occluded glint. The topmost glint is occluded by the eyelid. The particle has successfully estimated three components. Since there is no visible glint where the fourth glint is supposed to be according to the prior model, the likelihood is approximately flat and the posterior equals the prior (up to a scaling factor). The remaining two glints are again successfully located. The rightmost image shows the estimated grid location. The red thick plus sign indicates a low intensity value at the corresponding glint location.