Patent ID: 9165180
Filing Date: 2015-10-20
Classification: G06K,G06T

Abstract:
1. A method for face recognition, comprising: receiving user image data including data representing a user face; detecting a user luminance of the data representing the user face in the user image data; if the user luminance is less than or equal to a first luminance threshold, then selecting a first adaptive low pass filter that provides a first attenuation of the user image data using a first cutoff frequency; and if the user luminance is greater than the first luminance threshold and less than or equal to a second luminance threshold, then selecting a second adaptive low pass filter that provides a second attenuation of the user image data using a second cutoff frequency that is higher than the first cutoff frequency; applying the adaptive low pass filter to the user image data to create a filtered user image; applying feature extraction to the filtered user image to create a filtered user image representation; from a reference image database containing a plurality of filtered reference image representations, selecting a filtered reference image representation that comprises a reference image that has been filtered with the adaptive low pass filter; and determining whether the filtered reference image representation matches the filtered user image representation.