Abstract: A system and method for modifying media stream based on a channel limitation are disclosed. In one embodiment, the system includes a channel analyzer, a modality of interest (MOI) identification module and an inter-modality resolution modification module. The channel analyzer determines a channel limitation. The MOI identification module receives a plurality of media streams and identifies at least one MOI. The inter-modality resolution modification module modifies a resolution of at least one of the media streams based on the channel limitation and content of the media streams. In another embodiment, the system includes a region of interest identification (ROI) module and an intra-modality resolution modification module instead of, or in addition to, the MOI identification module and inter-modality resolution modification module. The ROI identification module receives a media stream and identifies at least one ROI within the media stream.

Abstract: Calibration for a plenoptic imaging system. The plenoptic imaging system includes a detector array that is subdivided into superpixels. A plenoptic image captured by the detector array of the plenoptic imaging system is accessed. For a row of superpixels, a slice is selected through the row, the selected slice having a Fourier transform with a stronger fundamental component compared to other slices through the row. A pitch of the row of superpixels is determined based on a frequency of the fundamental component of the selected slice. A rotation of the row of superpixels is determined based on a rotation of the selected slice.

Abstract: A light field imaging system captures different images provide views that are shifted by sub-pixel amounts relative to one another. These views can be combined to produce a higher resolution digital image of the object.

Abstract: A light field imaging system captures different images provide views that are shifted by sub-pixel amounts relative to one another. These views can be combined to produce a higher resolution digital image of the object.

Abstract: A system and method for modifying media stream based on a channel limitation are disclosed. In one embodiment, the system includes a channel analyzer, a modality of interest (MOI) identification module and an inter-modality resolution modification module. The channel analyzer determines a channel limitation. The MOI identification module receives a plurality of media streams and identifies at least one MOI. The inter-modality resolution modification module modifies a resolution of at least one of the media streams based on the channel limitation and content of the media streams. In another embodiment, the system includes a region of interest identification (ROI) module and an intra-modality resolution modification module instead of, or in addition to, the MOI identification module and inter-modality resolution modification module. The ROI identification module receives a media stream and identifies at least one ROI within the media stream.

Abstract: A system and method that grants a token to authenticate a user requesting access to an application in a domain is disclosed. The method includes receiving a response from an identity (ID) provider in a second domain responsive to a first request from a user to access an application provided by an application server in a first domain, the response indicating the authenticity of the user in the second domain, randomly selecting a first key and a second key from a key store, generating a secret by randomly permuting the first key and the second key, generating a signature by signing user information associated with the user using the secret, generating an authentication token including the signature, determining whether the authentication token is valid, and responsive to determining that the authentication token is valid, granting access to the first application to the user based on the authentication token.

Abstract: A light field imaging system captures different images provide views that are shifted by sub-pixel amounts relative to one another. These views can be combined to produce a higher resolution digital image of the object.

Abstract: Calibration for a plenoptic imaging system. The plenoptic imaging system includes a detector array that is subdivided into superpixels. A plenoptic image captured by the detector array of the plenoptic imaging system is accessed. For a row of superpixels, a slice is selected through the row, the selected slice having a Fourier transform with a stronger fundamental component compared to other slices through the row. A pitch of the row of superpixels is determined based on a frequency of the fundamental component of the selected slice. A rotation of the row of superpixels is determined based on a rotation of the selected slice.

Abstract: A multimode fundus camera enables three-dimensional and/or spectral/polarization imaging of the interior of the eye to assist in improved diagnosis.

Abstract: Embodiments of the present disclosure provide a method that comprises receiving a first stream of video frames at a first frame rate and generating a second stream of video frames at a second frame rate. The method also comprises interpolating between a pair of adjacent video frames of the first stream of video frames to produce a first number of interpolated intermediate video frames in a particular sequence of the intermediate video frames. The method further comprises duplicating at least one of the adjacent video frames of the pair of adjacent video frames to produce a second number of duplicated intermediate video frames in the particular sequence of the intermediate video frames. The method further comprises, in response to a change in observed interpolation quality, dynamically changing the first number of interpolated intermediate video frames and the second number of duplicated intermediate video frames.

Abstract: A motion compensated picture rate converter for determining a dominant motion vector for a block appearing in two images includes a high-pass filter and a low-pass filter, transform calculators responsive to the filters for performing transforms on at least two images to produce a frequency-domain representation of the images, estimating calculators for estimating a plurality of motion vectors based on the frequency-domain representations, and a periodic structure detection and elimination module responsive to the transform calculators and the estimating calculators for identifying a period based on the frequency-domain representation of the images and for selecting a dominant motion vector based on the estimated motion vectors and the identified period. A method of operation is also disclosed.

Abstract: Systems and methods for estimating motion in an image of a video signal are provided. A plurality of motion vectors for the image are estimated. A segment of the image is identified, where the segment is a portion of the image including a periodic structure. A dominant motion representation of the segment is determined. The dominant motion representation is used to modify certain motion vectors of the plurality of motion vectors.

Abstract: A light field imaging system captures different images provide views that are shifted by sub-pixel amounts relative to one another. These views can be combined to produce a higher resolution digital image of the object.

Abstract: Embodiments of the present disclosure provide a method that comprises receiving a motion-interpolated pixel of an interpolated video frame, wherein the motion-interpolated pixel is based at least in part on a pair of anchor video frames. The method further comprises blending the motion-interpolated pixel with one or more anchor pixels of the pair of anchor video frames to produce a temporally filtered pixel, wherein the one or more anchor pixels correspond in position to the motion-interpolated pixel of the interpolated video frame. The method also comprises substituting the temporally filtered pixel for the motion-interpolated pixel in the interpolated video frame.

Abstract: Systems and methods for converting a picture frame rate from a source video at a first rate to a target video at a second rate via interpolation of an intermediate frame. In one implementation, the system includes a phase plane correlation calculator including a low pass filter and a high pass filter for receiving previous frame data and current frame data where the phase plane correlation calculator is configured to generate a first motion vector based upon low pass representations and high pass representations. The system may also include a motion compensated interpolator that receives the first motion vector and an additional input motion vector and determines a final motion vector for use in interpolation. The system may further include an intermediate frame generator configured to generate the intermediate frame utilizing the final motion vector.

Abstract: In an embodiment, there is provided a video processing component comprising a compensation engine configured to generate pixels of a first video frame from a second video frame based at least in part on specified pixel motion; and an access buffer configured to store pixel data corresponding to pixels of the second video frame for reference by the compensation engine, wherein the pixel data is stored by the access buffer at different vertical resolutions depending on vertical distances of the pixels corresponding to the pixel data from a target pixel that is indicated by the compensation engine.

Abstract: Systems and methods are provided for determining pixels in an interpolated frame. A motion vector field is determined based on movement of pixels between first and second frames. A region of the motion vector field is clustered based on similarity of motion vectors of the motion vector field within the region. A region of discontinuity is identified comprising a portion of the motion vector field not belonging to a cluster. A determination is made as to whether the region of discontinuity is an occlusion region or a reveal region. A portion of the region of discontinuity in the interpolated frame is filled using pixel data from the first frame when the region of discontinuity is an occlusion region, and a portion of the region of discontinuity in the interpolated frame is filled using pixel data from the second frame when the region of discontinuity is a reveal region.

Abstract: Systems, methods, and other embodiments associated with image frame management are described. According to one embodiment, an apparatus includes classifier logic to categorize frames that represent an image as either reference frames or non-reference frames, where the categorization is based, at least in part, on motion vectors between the frames. The apparatus further includes management logic to store the reference frames and to delete the non-reference frames. Image generation logic may then reproduce the image by using the stored reference frames.

Abstract: The invention includes a system and the associated method for decoding multiple video signals. The video signals may be component video, composite video or s-video signals each having multiple portions using a multimode video decoder. A selection stage may combine the multiple video signals and select some of their video signal portions for processing. The selection stage may time-multiplex some of the video signal portions. An analog to digital conversion stage may be shared by the time-multiplexing of the video signals. A decoder stage may decode the various signal portions and provide decoded output video signals. These feature may reduce the overall cost of the system. Various clock signals may be used to operate various stages of a multimode video decoder. Some of the clock signals may run at different frequencies and others may operate at a different phase.

Abstract: In one embodiment the present invention includes a digital image processing method for concealing errors. The method includes determining error pixel locations based on motion vectors and determining if the error pixel locations in a current frame are on an edge of an object in the current frame. If an error pixel location is on an edge, then a search of pixel values is performed in the current frame along the edge for a replacement pixel value. If the error pixel location is not on an edge, then a search of pixel values is performed in a region adjacent to the edge for the replacement pixel value.