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class FourCornerLocalizer(GeodesicLocalizer): |
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""" |
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The :py:class:`FourCornerLocalizer` is a type of localizer that is used when |
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observation locations are described using the latitude and longitude of the |
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four corners of the observation. |
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""" |
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def __init__(self, corners, n_rows, n_cols, flight_direction): |
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""" |
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:param corners: |
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an ordered collection of the four image corners, each a latitude and |
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east longitude pair (in degrees); the order of the corners is: |
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- top left |
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- bottom left |
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- bottom right |
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- top right |
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:param n_rows: the number of rows in the image |
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:param n_cols: the number of columns in the image |
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:param flight_direction: |
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a multiplicative factor indicating the direction of flight relative |
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to the :math:`y`-direction in pixel space; if |
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``flight_direction=1``, then the flight direction is from the the |
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top down, whereas ``flight_direction=-1`` indicates a bottom-up |
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direction of flight |
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""" |
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if n_rows <= 0: raise ValueError('No image rows') |
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if n_cols <= 0: raise ValueError('No image columns') |
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self.n_rows = n_rows |
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self.n_cols = n_cols |
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self.flight_direction = flight_direction |
The flight direction is set for the FourCornerLocalizer, but it is never actually used. It should be removed to simplify the interface.
