Motorola Mobility LLC

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Peter A Matsimanis

Andrea Manavella

Saeid Baghert

An electronic device incorporates features that are dependent on finding a face by image processing of an image taken by an image capturing device. To avoid false positives and false negatives due to poor focus, exposure, or spoofing with a picture, the electronic device validates, by distance and/or temperature, a candidate face within a captured image. Distance information is used to scale the candidate face to an actual size for comparison against biometric data on a range of sizes of a human face. Detected temperature is compared against biometric data on the temperature of a human face sensed in the infrared spectrum. Confidence value for face detection is increased or decreased in relation to the validation by size/temperature. For a validated candidate having a confidence value above a threshold, the electronic device can adjust camera controls of an image capturing device or enable a face recognition security component.

Face detection with temperature and distance validation

For creating a single image from two images taken at different exposure setting when a face is detected, an apparatus includes an image sensor and a processor. The processor calculates a first exposure value for the photographic subject matter. Here, the first exposure value is calculated using the photographic subject matter as a whole. The processor determines whether a face is present within the photographic subject matter. In response to the determining that a face is present, the processor calculates a second exposure value. Here, the second exposure value is calculated to correctly expose the face. The processor controls the image sensor to capture a first image using the first exposure value and a second image using the second exposure value. The processor creates a third image using the first image and the second image.

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Chicago, IL, United States of America

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