Tessera Technologies Patent Applications

AXIAL CHROMATIC ABERRATION CORRECTION

Granted: January 3, 2013
Application Number: 20130002908
A 9 pixel-by-9 pixel working window slides over an input Bayer image. For each such window, a demosaicing operation is performed. For each such window, corrective processing is performed relative to that window to produce relative differences for that window. For each such window for which relative differences have been produced, those relative differences are regulated. For each window, a maximum is found for that window's regulated relative differences; in one embodiment of the…

ENHANCED DEPTH OF FIELD BASED ON UNIFORM RELATIVE ILLUMINATION VIA LENS WITH LARGE DISTORTION

Granted: December 13, 2012
Application Number: 20120314296
A lens system is provided that comprises an enhanced depth of field based on a uniform or near uniform relative illumination via a lens with a large distortion. The distortion can be corrected with image processing equipment. The lens system can comprise an aperture stop and a group of lens, wherein there can be about five lenses in the group of lenses. The lens system is designed for relative illumination such that the light distribution over the lens system is substantially uniform.

FACE AND OTHER OBJECT TRACKING IN OFF-CENTER PERIPHERAL REGIONS FOR NONLINEAR LENS GEOMETRIES

Granted: October 4, 2012
Application Number: 20120249725
A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular or otherwise undistorted or less distorted frame of reference as a reconstructed ROI.

FACE AND OTHER OBJECT DETECTION AND TRACKING IN OFF-CENTER PERIPHERAL REGIONS FOR NONLINEAR LENS GEOMETRIES

Granted: October 4, 2012
Application Number: 20120249726
A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular or otherwise undistorted or less distorted frame of reference as a reconstructed ROI.

SUPERRESOLUTION ENHANCMENT OF PERIPHERAL REGIONS IN NONLINEAR LENS GEOMETRIES

Granted: October 4, 2012
Application Number: 20120249727
A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular or otherwise undistorted or less distorted frame of reference as a reconstructed ROI. A quality of reconstructed pixels is determined within…

SCENE ENHANCEMENTS IN OFF-CENTER PERIPHERAL REGIONS FOR NONLINEAR LENS GEOMETRIES

Granted: October 4, 2012
Application Number: 20120249841
A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular or otherwise undistorted or less distorted frame of reference as a reconstructed ROI. A quality of reconstructed pixels is determined within…

SCENE ENHANCEMENTS IN OFF-CENTER PERIPHERAL REGIONS FOR NONLINEAR LENS GEOMETRIES

Granted: October 4, 2012
Application Number: 20120250937
A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular frame of reference as a reconstructed ROI. A quality of reconstructed pixels is determined within the reconstructed ROI. Image analysis is…

ANISOTROPIC DENOISING METHOD

Granted: September 6, 2012
Application Number: 20120224784
In accordance with an embodiment of the invention, an anisotropic denoising method is provided that removes sensor noise from a digital image while retaining edges, lines, and details in the image. In one embodiment, the method removes noise from a pixel of interest based on the detected type of image environment in which the pixel is situated. If the pixel is situated in an edge/line image environment, then denoising of the pixel is increased such that relatively stronger denoising of…

Automatic Detection of Vertical Gaze Using an Embedded Imaging Device

Granted: August 30, 2012
Application Number: 20120218398
A method of detecting and applying a vertical gaze direction of a face within a digital image includes analyzing one or both eyes of a face within an acquired image, including determining a degree of coverage of an eye ball by an eye lid within the digital image. Based on the determined degree of coverage of the eye ball by the eye lid, an approximate direction of vertical eye gaze is determined. A further action is selected based on the determined approximate direction of vertical eye…

FAST ROTATION ESTIMATION

Granted: August 16, 2012
Application Number: 20120206617
A measure of frame-to-frame rotation is determined. A global XY alignment of a pair of frames is performed. Local XY alignments in at least two matching corner regions of the pair of images are determined after the global XY alignment. Based on differences between the local XY alignments, a global rotation is determined between the pair of frames.

OBJECT DETECTION FROM IMAGE PROFILES

Granted: August 16, 2012
Application Number: 20120206618
A measure of frame-to-frame rotation is determined. A global XY alignment of a pair of image frames is performed. At least one section of each of the X and Y integral projection vectors is determined, where aligned global vectors demonstrate a significant localized difference. Based on X and Y locations of the at least one section of the X and Y integral projection vectors, location, relative velocity and/or approximate area of at least one moving object within the sequence of image…

COMPACT DISTORTED ZOOM LENS FOR SMALL ANGLE OF VIEW

Granted: August 16, 2012
Application Number: 20120206627
Providing for optical imaging lenses employing non-linear distortion for image magnification is described herein. By way of example, a five-lens system can perform magnification functions by producing distortion that expands the image in the center of the field of view and compresses the image in the periphery of the field of view. This distortion can be corrected through image processing to yield a rectified image. Further, the five-lens system can be implemented as part of a…

IMAGE ROTATION FROM LOCAL MOTION ESTIMATES

Granted: August 16, 2012
Application Number: 20120207347
A measure of frame-to-frame rotation is determined. Integral projection vector gradients are determined and normalized for a pair of images. Locations of primary maximum and minimum peaks of the integral projection vector gradients are determined. Based on normalized distances between the primary maximum and minimum peaks, a global image rotation is determined.

Autofocus Method

Granted: August 9, 2012
Application Number: 20120200725
An autofocus method includes acquiring multiple images each having a camera lens focused at a different focus distance. A sharpest image is determined among the multiple images. Horizontal, vertical and/or diagonal integral projection (IP) vectors are computed for each of the multiple images. One or more IP vectors of the sharpest image is/are convoluted with multiple filters of different lengths to generate one or more filtered IP vectors for the sharpest image. Differences are computed…

DISTANCE ESTIMATION SYSTEMS AND METHOD BASED ON A TWO-STATE AUTO-FOCUS LENS

Granted: July 19, 2012
Application Number: 20120182448
An electronic device including a camera adapted to capture images is provided. The camera includes a lens having a first focusing state and a second focusing state; an image sensor adapted to capture a first image of an object in the first focusing state and a second image of the object in the second focusing state. The electronic device further includes a memory configured to store instructions; and a processor coupled to the memory and the camera, wherein the processor is adapted to…

Chromatic Noise Reduction Method and Apparatus

Granted: July 19, 2012
Application Number: 20120182454
A chromatic noise reduction method is provided for removing chromatic noise from the pixels of a mosaic image. In one implementation, an actual chroma value and a de-noised chroma value are derived for the central pixel of a matrix of pixels. Based at least in part upon these chroma values, a final chroma value is derived for the central pixel. The final chroma value is then used, along with the actual luminance of the central pixel, to derive a final de-noised pixel value for the…

Methods and Apparatuses for Addressing Chromatic Abberations and Purple Fringing

Granted: July 12, 2012
Application Number: 20120177289
Methods and systems for detecting and correcting chromatic aberration and purple fringing are disclosed. Chromatic aberration can be addressed by separating an image into color planes and then adjusting these to reduce chromatic aberration by using a specific calibration image (calibration chart) as an empirical method to calibrate the image acquisition device. Purple fringing can be corrected by initially addressing color aberration resulting from the lateral chromatic aberration (LCA).…

CAMERA-ENABLED REMOTE CONTROL APPARATUS FOR CONSUMER ELECTRONIC APPLIANCES

Granted: May 17, 2012
Application Number: 20120120261
An apparatus for the remote wireless control of a consumer electronic audio and/or visual (A/V) appliance such as a TV set, and/or for internet uploading, includes a remote control handset that includes an A/V device component such as a digital still and/or video camera and/or audio player/recorder, and is configured to one or both of directly control the CE appliance, or indirectly via a wireless receiver, for playing, displaying, transitioning and/or editing audio and/or visual data,…

RAPID AUTO-FOCUS USING CLASSIFIER CHAINS, MEMS AND/OR MULTIPLE OBJECT FOCUSING

Granted: May 17, 2012
Application Number: 20120120269
A smart-focusing technique includes identifying an object of interest, such as a face, in a digital image. A focus-generic classifier chain is applied that is trained to match both focused and unfocused faces and/or data from a face tracking module is accepted. Multiple focus-specific classifier chains are applied, including a first chain trained to match substantially out of focus faces, and a second chain trained to match slightly out of focus faces. Focus position is rapidly adjusted…

RAPID AUTO-FOCUS USING CLASSIFIER CHAINS, MEMS AND/OR MULTIPLE OBJECT FOCUSING

Granted: May 17, 2012
Application Number: 20120120283
A smart-focusing technique includes identifying an object of interest, such as a face, in a digital image. A focus-generic classifier chain is applied that is trained to match both focused and unfocused faces and/or data from a face tracking module is accepted. Multiple focus-specific classifier chains are applied, including a first chain trained to match substantially out of focus faces, and a second chain trained to match slightly out of focus faces. Focus position is rapidly adjusted…