Apparatus and methods for configuration and optimization of image sensors for gaze tracking applications
OwnerSudipto Sur, Luis M. Pestanainventors
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Abstract
Apparatus and methods for enhancing the performance of an imager in applications such as gaze tracking are described. An enhanced image sensor includes a sensor pixel array, a filter array optically coupled to the pixel array and a filter map including data associated with one or more characteristics of the filter array. The filter array characteristics can be preconfigured and/or dynamically reconfigured to allow for wavelength specific pixel capture, with the filter map correspondingly adjusted in response to changes in the filter array characteristics.
Claims32
A filtering assembly for an imaging apparatus comprising:
- a filter array including a plurality of filter elements, said plurality of filter elements including a first filter element configured to filter light according to a first range of wavelengths and a second filter element configured to filter light according to a second range of wavelengths;
- and
- a filter map, said filter map including a set of data corresponding to characteristics of ones of the plurality of filter elements.
An imaging apparatus comprising:
- An imaging sensor having a plurality of pixel elements disposed in an array, said pixel elements configured for sensing light;
- a filter array optically coupled to the pixel array, said filter array including a plurality of filter elements matched to ones of a corresponding plurality of the pixel elements;
- and
- a filter map, said filter map including a set of data corresponding to ones of the plurality of filter elements.
A method of processing images for gaze tracking applications comprising:
- receiving a first set of data representing sensor data provided by ones of a plurality of sensor elements of a pixel array;
- receiving a filter map, said filter map including data associated with characteristics of ones of a plurality of filter elements associated with corresponding ones of the plurality of sensor elements;
- and
- generating a first processed image, said processed image generated at least in part by adjusting the first set of data based on the filter map.
Dependencies are inferred from the claim text.