Microsoft Technology Licensing, LLC

Xfrm, Inc.

Matthew Sammis Ashman

Ivan Stojiljkovic

Magdalena Vukosavljevic

David Nister

Richard C Cabot

Milan Vugdelija

Gabriel Takacs

David Maxwell Gedye

Djordje Nijemcevic

Wolf Kienzle

Ruchita Bhargava

Piotr Dollar

Tracy K Ard

James Fletcher

Mladen Radojevic

Pavle Josipović

Arthur Charles Tomlin

Ethan Eade

Frederik Schaffalitzky

Tony Ambrus

Michael Grabner

A method of object detection includes receiving a first image taken from a first perspective by a first camera and receiving a second image taken from a second perspective, different from the first perspective, by a second camera. Each pixel in the first image is offset relative to a corresponding pixel in the second image by a predetermined offset distance resulting in offset first and second images. A particular pixel of the offset first image depicts a same object locus as a corresponding pixel in the offset second image only if the object locus is at an expected object-detection distance from the first and second cameras. The method includes recognizing that a target object is imaged by the particular pixel of the offset first image and the corresponding pixel of the offset second image.

Stereoscopic object detection leveraging expected object distance

Mixed-reality systems are provided for using anchor data structures, such as anchor graphs, within a mixed-reality environment. These systems utilize anchor components, such as anchor vertexes, that comprise at least one first key frame, a first mixed-reality element, and at least one first transform connecting the at least one first key frame to the first mixed-reality element. Anchor connecting components, such as anchor edges, comprise transformations that connect the anchor components (e.g., anchor vertexes).

Sharing of sparse slam coordinate systems

Mixed-reality systems are provided for using anchor graphs within a mixed-reality environment. These systems utilize anchor vertexes that comprise at least one first key frame, a first mixed-reality element, and at least one first transform connecting the at least one first key frame to the first mixed-reality element. Anchor edges comprising transformations connect the anchor vertexes.

Systems and methods for utilizing anchor graphs in mixed reality environments

A method of object detection includes receiving a first image taken by a first stereo camera, receiving a second image taken by a second stereo camera, and offsetting the first image relative to the second image by an offset distance selected such that each corresponding pixel of offset first and second images depict a same object locus if the object locus is at an assumed distance from the first and second stereo cameras. The method further includes locating a target object in the offset first and second images.

Stereoscopic object detection leveraging assumed distance

The technology described herein employs techniques for overlaying (superimposing) translated text on top of (over) scanned text in realtime. The technology recognizes text in an image and identifies a first language in which the text is written. The technology translates the text into a second language and generates an overlay in the second language. The overlay is then inserted into the display over the text in the image.

Text overlay techniques in realtime translation

A method for performing a surround audio compatibility assessment on a plurality of original surround channels is described herein. A surround audio compatibility assessment system accepting original surround signals is also described herein.

Surround audio compatibility assessment

A computing device includes a location sensor system including sensor(s) configured to measure one or more parameters of a surrounding environment, a pose-tracking engine configured to determine a current pose of the computing device based on the one or more measured parameters of the surrounding environment, a graphing engine configured to access a traversability graph including a plurality of vertices each having a local coordinate system, a navigation engine configured to identify a nearby vertex of the traversability graph to the current pose, and configured to determine a path of traversable edges between the nearby vertex and a destination vertex of the traversability graph, and a display configured to visually present as an overlay to the environment a navigation visualization corresponding to the path.

Augmented reality navigation

Architecture that enables optical character recognition (OCR) of text in video frames at the rate at which the frames are received. Additionally, conflation is performed on multiple text recognition results in the frame sequence. The architecture comprises an OCR text recognition engine and a tracker system; the tracker system establishes a common coordinate system in which OCR results from different frames may be compared and/or combined. From a set of sequential video frames, a keyframe is chosen from which the reference coordinate system is established. An estimated transformation from keyframe coordinates to subsequent video frames is computed using the tracker system. When text recognition is completed for any subsequent frame, the result coordinates can be related to the keyframe using the inverse transformation from the processed frame to the reference keyframe. The results can be rendered for viewing as the results are obtained.

Simultaneous tracking and text recognition in video frames

Architecture that employs techniques for overlaying (superimposing) translated text on top of (over) scanned text in realtime translation to provide clear visual correlation between original text and translated text. Algorithms are provided that overlay text in cases of translated scanned text of language written in first direction to a language written in same direction, translate scanned text from a first language written in a first direction to a second language written in the opposite direction, and translated scanned text from a language written in a first direction to language written in a different direction.

Methods and apparatus are disclosed for approximating an MDCT coefficient of a block of windowed sinusoid having a defined frequency, the block being multiplied by a window sequence and having a block length and a block index. A finite trigonometric series is employed to approximate the window sequence. A window summation table is pre-computed using the finite trigonometric series and the defined frequency of the sinusoid. A block phase is computed for each block with the defined frequency, the block length and the block index. An MDCT coefficient is approximated by the dot product of a phase vector computed using the block phase with a corresponding row of the window summation table.

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Seattle, WA, United States of America

Matthew Sammis Ashman