Intel Corporation

Nokia Corporation

Evgeny Krestyannikov

Jarno Nikkanen

Vitali Samurov

Dmytro Paliy

A method, system, and apparatus are described. The method includes calculating, via a white balancer, a candidate illumination chromaticity estimate for a current frame and calculating, via a scene prior monitor, a scene prior chromaticity for the current frame as a weighted sum of a scene prior chromaticity from a previous frame and a candidate illumination chromaticity estimate. The method also includes calculating, via a scene invariant illumination chromaticity controller, a final illumination chromaticity for the current frame as a weighted sum of a scene illumination chromaticity for the current frame and the candidate illumination chromaticity estimate.

Estimation of illumination chromaticity in automatic white balancing

A system, article, and method to perform light source estimation for image processing includes measuring a compactness of the distribution of the image data to select a light source.

Method and system of light source estimation for image processing

Techniques related to contract detection autofocus for imaging devices and, in particular, to contrast detection autofocus using multiple filters to generate adaptive step sizes are discussed. Such techniques may include determining a ratio of filter responses for filters applied to a portion of a scene, generating a distance from focus based on the ratio, and determining a lens position movement based on an adaptive step size generated using the distance from focus and a confidence level associated with the distance from focus.

Contrast detection autofocus using multi-filter processing and adaptive step size selection

A systems, article, and method to provide automatic focus with self-calibration.

Method and system for automatic focus with self-calibration

Techniques related to autofocus for imaging devices and, in particular, to generating reliability values associated with phase autofocus shifts are discussed. Such techniques may include performing a curve fitting based on accumulated phase difference values and phase shifts for phase autofocus images and generating a reliability value for a focus phase shift based on the curve fitting.

Reliability measurements for phase based autofocus

In accordance with the exemplary embodiments of the invention there is at least a method, executable computer program, and apparatus to provide operations including logically separating into a plurality of parts at least one sub-window of interest of a plurality of sub-windows of interest arranged in a grid formation in an autofocus window of interest, assigning a focus value mask to each of the plurality of parts of the at least one sub-window, and executing an autofocus algorithm using the assigned focus value masks.

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Tampere, Finland

Evgeny Krestyannikov