Patent application number | Description | Published |
20110187819 | DEPTH CAMERA COMPATIBILITY - Compatibility between a depth image consumer and a plurality of different depth image producers is provided by receiving a native depth image having unsupported depth camera parameters that are not compatible with a depth image consumer, and converting the native depth image to a virtual depth image having supported virtual depth camera parameters that are compatible with the depth image consumer. This virtual depth image is then output to the depth image consumer. | 08-04-2011 |
20110187820 | DEPTH CAMERA COMPATIBILITY - Compatibility between a depth image consumer and a depth image producer is provided by receiving a native depth image having an unsupported type that is not supported by a depth image consumer, and processing the native depth image into an emulation depth image having a supported type that is supported by the depth image consumer. This emulation depth image is then output to the depth image consumer. | 08-04-2011 |
20110234481 | ENHANCING PRESENTATIONS USING DEPTH SENSING CAMERAS - A depth camera and an optional visual camera are used in conjunction with a computing device and projector to display a presentation and automatically correct the geometry of the projected presentation. Interaction with the presentation (switching slides, pointing, etc.) is achieved by utilizing gesture recognition/human tracking based on the output of the depth camera and (optionally) the visual camera. Additionally, the output of the depth camera and/or visual camera can be used to detect occlusions between the projector and the screen (or other target area) in order to adjust the presentation to not project on the occlusion and, optionally, reorganize the presentation to avoid the occlusion. | 09-29-2011 |
20110234756 | DE-ALIASING DEPTH IMAGES - Techniques are provided for de-aliasing depth images. The depth image may have been generated based on phase differences between a transmitted and received modulated light beam. A method may include accessing a depth image that has a depth value for a plurality of locations in the depth image. Each location has one or more neighbor locations. Potential depth values are determined for each of the plurality of locations based on the depth value in the depth image for the location and potential aliasing in the depth image. A cost function is determined based on differences between the potential depth values of each location and its neighboring locations. Determining the cost function includes assigning a higher cost for greater differences in potential depth values between neighboring locations. The cost function is substantially minimized to select one of the potential depth values for each of the locations. | 09-29-2011 |
20120056982 | DEPTH CAMERA BASED ON STRUCTURED LIGHT AND STEREO VISION - A depth camera system uses a structured light illuminator and multiple sensors such as infrared light detectors, such as in a system which tracks the Motion of a user in a field of view. One sensor can be optimized for shorter range detection while another sensor is optimized for longer range detection. The sensors can have a different baseline distance from the illuminator, as well as a different spatial resolution, exposure time and sensitivity. In one approach, depth values are obtained from each sensor by matching to the structured light pattern, and the depth values are merged to obtain a final depth map which is provided as an input to an application. The merging can involve unweighted averaging, weighted averaging, accuracy measures and/or confidence measures. In another approach, additional depth values which are included in the merging are obtained using stereoscopic matching among pixel data of the sensors. | 03-08-2012 |
20120075534 | INTEGRATED LOW POWER DEPTH CAMERA AND PROJECTION DEVICE - A video projector device includes a visible light projector to project an image on a surface or object, and a visible light sensor, which can be used to obtain depth data regarding the object using a time-of-flight principle. The sensor can be a charge-coupled device which obtains color images as well as obtaining depth data. The projected light can be provided in successive frames. A frame can include a gated sub-frame of pulsed light followed by continuous light, while the sensor is gated, to obtain time of flight data, an ungated sub-frame of pulsed light followed by continuous light, while the sensor is ungated, to obtain reflectivity data and a background sub-frame of no light followed by continuous light, while the sensor is gated, to determine a level of background light. A color sub-frame projects continuous light, while the sensor is active. | 03-29-2012 |
20120082346 | TIME-OF-FLIGHT DEPTH IMAGING - Techniques are provided for determining depth to objects. A depth image may be determined based on two light intensity images. This technique may compensate for differences in reflectivity of objects in the field of view. However, there may be some misalignment between pixels in the two light intensity images. An iterative process may be used to relax a requirement for an exact match between the light intensity images. The iterative process may involve modifying one of the light intensity images based on a smoothed version of a depth image that is generated from the two light intensity images. Then, new values may be determined for the depth image based on the modified image and the other light intensity image. Thus, pixel misalignment between the two light intensity images may be compensated. | 04-05-2012 |
20120154542 | PLURAL DETECTOR TIME-OF-FLIGHT DEPTH MAPPING - A depth-mapping method comprises exposing first and second detectors oriented along different optical axes to light dispersed from a scene, and furnishing an output responsive to a depth coordinate of a locus of the scene. The output increases with an increasing first amount of light received by the first detector during a first period, and decreases with an increasing second amount of light received by the second detector during a second period different than the first. | 06-21-2012 |
20130129224 | COMBINED DEPTH FILTERING AND SUPER RESOLUTION - Systems and methods for increasing the resolution of a depth map by identifying and updating false depth pixels are described. In some embodiments, a depth pixel of the depth map is initially assigned a confidence value based on curvature values and localized contrast information. The curvature values may be generated by applying a Laplacian filter or other edge detection filter to the depth pixel and its neighboring pixels. The localized contrast information may be generated by determining a difference between the maximum and minimum depth values associated with the depth pixel and its neighboring pixels. A false depth pixel may be identified by comparing a confidence value associated with the false depth pixel with a particular threshold. The false depth pixel may be updated by assigning a new depth value based on an extrapolation of depth values associated with neighboring pixel locations. | 05-23-2013 |
20140002611 | TIME-OF-FLIGHT DEPTH IMAGING | 01-02-2014 |