Ionita
Corina Ioana Ionita, Katy, TX US
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20150091742 | APPARATUS AND METHOD FOR MULTILEVEL CODING (MLC) WITH BINARY ALPHABET POLAR CODES - A method includes receiving multiple bits to be transmitted. The method also includes applying a first binary alphabet polar code to a first subset of the multiple bits to generate first encoded bits. The first encoded bits are associated with a first bit level of a multilevel coding scheme. The method further includes generating one or more symbols using the first encoded bits and bits associated with a second bit level of the multilevel coding scheme. The first binary alphabet polar code is associated with a first coding rate. In addition, the method could include applying a second binary alphabet polar code to a second subset of the multiple bits to generate second encoded bits. The second encoded bits are associated with the second bit level. The second binary alphabet polar code is associated with a second coding rate such that the bit levels have substantially equal error rates. | 04-02-2015 |
20150092886 | APPARATUS AND METHOD FOR SUPPORTING POLAR CODE DESIGNS - A method includes simulating transmission of multiple symbols representing multiple bits over at least one communication channel, where the multiple symbols are associated with a polar code. The method also includes identifying error rates of equivalent bit channels associated with the simulated transmission of the symbols. The method further includes selecting a specified number of the bits as frozen bits in the polar code using the identified error rates. Simulating the transmission of the symbols could include computing log likelihood ratio (LLR) values associated with the equivalent bit channels and simulating polar decoding of received symbols using the LLR values. Identifying the error rates could include calculating means and variances of the LLR values associated with the equivalent bit channels and identifying probability density functions of the LLR values using the means and variances. The selected bits could represent the specified number of bits identified as having worst error rates. | 04-02-2015 |
Mircea Ionita, Dublin IE
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20150104081 | METHODS AND SYSTEMS FOR DETERMINING USER LIVENESS - A method determining user liveness is provided that includes calculating, by a device, eye openness measures for a frame included in captured authentication data, and storing the eye openness measures in a buffer of the device. Moreover the method includes calculating confidence scores from the eye openness measures stored in the buffer, and detecting an eye blink when a maximum confidence score is greater than a threshold score. | 04-16-2015 |
20150110365 | METHODS AND SYSTEMS FOR DETECTING BIOMETRIC CHARACTERISTICS IN AN IMAGE - A method for detecting biometric characteristics in a captured biometric data image is provided that includes determining, by a processor, an approximate location for a biometric characteristic in a frame included in captured biometric data, and determining region of interest positions over the frame. Moreover, the method includes calculating a set of feature values for each position, generating a displacement for each set of feature values and generating a median displacement, and adjusting the biometric characteristic location by the median displacement. | 04-23-2015 |
Mircea Ionita, Manchester GB
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20150186748 | IMAGE PROCESSING APPARATUS AND METHOD FOR FITTING A DEFORMABLE SHAPE MODEL TO AN IMAGE USING RANDOM FOREST REGRESSION VOTING - One embodiment of the invention provides an image processing method for use in fitting a deformable shape model to an acquired image. The deformable shape model specifies a set of target points whose motion is governed by the model. The method comprises, for each target point, generating a corresponding response image by: providing a feature detector to locate a given target point within the acquired image, wherein said feature detector includes a random forest comprising one or more decision trees; scanning a patch image across the acquired image to define multiple sampling locations with respect to the acquired image; for each sampling location of the patch image with respect to the acquired image, performing regression voting using the random forest to produce one or more votes for the location of the given target point within the acquired image; and accumulating the regression votes for all of the multiple sampling locations to generate said response image corresponding to the given target point. The method further includes then performing an optimization to determine positions for the set of target points within the acquired image based on the corresponding response images and subject to constraint by the deformable shape model. | 07-02-2015 |
Mircea C. Ionita, Galway IE
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20110102553 | ENHANCED REAL-TIME FACE MODELS FROM STEREO IMAGING - A stereoscopic image of a face is generated. A depth map is created based on the stereoscopic image. A 3D face model of the face region is generated from the stereoscopic image and the depth map. The 3D face model is applied to process an image. | 05-05-2011 |
Naomi Ionita, San Francisco, CA US
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20150033102 | DIRECT PRESENTATIONS FROM CONTENT COLLECTIONS - Presenting content includes selecting a subset of content items from a content collection, where at least some of the subset of content items includes a plurality of objects selected from the group of categories consisting of: text, images, web clips, HTML clips, audio clips, video clips, links to external web content, document attachments, and multimedia attachments and includes displaying content items from the subset of content items on a presentation screen, where intelligent navigation facilitates scanning through objects included with each of the content items. The intelligent navigation may use a dedicated button, a keyboard shortcut and/or a multi-touch gesture for scanning through objects. The intelligent navigation may allow scrolling through objects by category. Presenting content may also include automatically forming a first cover note having a first table of contents listing titles of at least a first portion of the subset of content items and corresponding links thereto. | 01-29-2015 |