open-iris v1.1.1

Changelog

SimpleHammingDistanceMatcher, a hamming distance-based iris template matcher without the bells and whistles. It functions ~2x faster than HammingDistanceMatcher, is more readable and just does fractional hamming distance with the option to normalise the result by the fraction of visible bits.

Refactor parameters for HammingDistanceMatcher and the underlying utils function hamming_distance. Parameters used to be nm_dist: Optional[float], i.e. either None or a float, the mean HD to normalise towards. Parameters are now normalise: bool: wether to normalise the hamming distance by the fraction of visible bits, nm_dist: float: the mean HD to normalise towards, and nm_type: Literal["sqrt", "linear"], i.e. a string that is either "sqrt" or "literal" which represent the type of normalisation ("sort" is equivalent to the previous behaviour)

Interface Matcher and BatchMatcher, from which HammingDistanceMatcher and SimpleHammingDistanceMatcher inherit from.

Remove upper bound on HammingDistanceMatcher's rotation_shift parameter. This parameter represents the rotation in the angular direction of the iris template, and is expressed in bits (not degrees as was previously expressed).

Modified the HD normalisation function slightly. Only the cases where HD is normalised and less than 1/4 of the iris texture is masked are affected