Calibration for stereoscopic capture system
AssigneeAptina Imaging Corporation
InventorCheng Lu
Life of this patent
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Abstract
Apparatus and a method for generating a rectified image. First pixel information corresponding to a first image is received from a first imager. Second pixel information corresponding to a second image is received from a second imager. A plurality of facial feature points of a portrait in each of the first and second images are identified. A fundamental matrix is generated based on the detected facial features. An essential matrix is generated based on the fundamental matrix. Rotational and translational information corresponding to the first and second imagers are generated based on the essential matrix. The rotational and translational information are applied to at least one of the first and second images to generate at least one rectified image.
Claims15
A method for using an imaging device having a first imager, a second imager that is different from the first imager, and image processing circuitry for processing image information received from the first and second imagers, the method comprising:
- with the image processing circuitry, receiving first pixel information corresponding to a first image captured by the first imager;
- with the image processing circuitry, receiving second pixel information corresponding to a second image captured by the second imager;
- with the image processing circuitry, identifying a plurality of facial feature points of a portrait in each of the first and second images;
- and
- with the image processing circuitry, computing rotational and translational information corresponding to the first and second imagers based on the identified facial feature points in each of the first and second images.
An imaging device comprising:
- a first image sensor configured to capture a first image;
- a second image sensor that is different from the first image sensor and that is configured to capture a second image;
- and
- an image processor, wherein the image processor comprises:
- a facial feature identifier configured to receive first pixel information from the first image sensor corresponding to the first image and second pixel information from the second image sensor corresponding to the second image, wherein the facial feature identifier is configured to identify a plurality of facial feature points of a portrait in each of the first and second images;
- a fundamental matrix generator configured to generate a fundamental matrix based on the identified facial feature points in the first and second images;
- an essential matrix generator configured to generate an essential matrix based on the fundamental matrix and based on intrinsic parameters corresponding to the first and second pixel information;
- a rectification parameter generator configured to generate rotational and translational information corresponding to the first and second images based on the essential matrix;
- and
- an image rectifier configured to receive the first and second pixel information and configured to generate at least one rectified image based on the rotational and translational information corresponding to the first and second images.
Dependencies are inferred from the claim text.