Abstract: A sequence of base layer images for a base reference image display and a set of one or more sequences of beta scale maps corresponding to one or more non-base reference image displays are generated. A subset of one or more sequences of beta scale maps is determined in the set of one or more sequences of beta scale maps based at least in part on display capabilities of a target image display. The sequence of base layer images, along with the subset of one or more sequences of beta scale maps, is encoded into a video signal to cause a recipient device of the video signal to generate a sequence of display images from the sequence of base layer images and the subset of one or more sequences of beta scale maps for rendering on the image display.

Abstract: Systems and methods for color grading of images and video based on similarity to exemplars. In preparation for color-grading new content, exemplar frames related to the expected new content may be obtained and color grading parameters for the exemplar frames may be obtained. To color grade the new content as it is created or received, similarities between frames of the new content and the exemplar frames may be determined. The similarities between frames of the new content and the exemplar frames may be determined may be combined with the obtained color-grading parameters from the exemplar frames to determine suitable color-grading parameters to apply to the new content. The new content may then be color-graded using the determined color-grading parameters.

Abstract: A process for the preparation of ethylene glycol comprising the steps of: a) supplying a first gas composition comprising ethylene oxide and carbon dioxide to an ethylene oxide absorber and allowing the gas composition to pass upwards through an absorption section; b) supplying a lean absorbent to the top of the absorption section and allowing the lean absorbent to pass downwards through the absorption section; c) intimately contacting the gas composition with lean absorbent on the trays in the absorption section in the presence of one or more catalysts to produce a fat absorbent stream comprising ethylene glycol and ethylene carbonate; d) withdrawing fat absorbent from the absorber; and e) withdrawing a second gas composition from the top of the absorber.

Abstract: A videoconferencing booth (100) and operating method therefor. The videoconferencing booth (100) comprises a tracking system (106), a stereoscopic projector (104), a first actuator (114) configured to translate the stereoscopic projector (104), an image sensor arrangement (108), a second actuator (118) configured to translate the image sensor arrangement (108), and a controller (202). The controller (202) is configured to obtain a first stream of first positions from the tracking system (106), transmit commands to the first actuator (114) to adjust the position of the stereoscopic projector (104) based on the first stream of first positions, and transmit the first stream of first positions to a remote videoconferencing booth.

Abstract: Occluded image fragments are sorted in size. The largest image fragment is used to size a quadtree node in a layout mask for a disocclusion atlas used to store the image fragments. The sorted image fragments are stored into the disocclusion atlas using the layout mask such as each image fragment is hosted with a best fit quadtree node in the disocclusion atlas. A video signal may be generated by encoding one or more reference images and the disocclusion atlas storing the image fragments. The image fragments can be used by a recipient device to fill disoccluded image data in disoccluded spatial regions in a display image synthesized from the reference images.

Abstract: Saliency regions are identified in a global scene depicted by volumetric video. Saliency video streams that track the saliency regions are generated. Each saliency video stream tracks a respective saliency region. A saliency stream based representation of the volumetric video is generated to include the saliency video streams. The saliency stream based representation of the volumetric video is transmitted to a video streaming client.

Abstract: A multi-view input image covering multiple sampled views is received. A multi-view layered image stack is generated from the multi-view input image. A target view of a viewer to an image space depicted by the multi-view input image is determined based on user pose data. The target view is used to select user pose selected sampled views from among the multiple sampled views. Layered images for the user pose selected sampled views, along with alpha maps and beta scale maps for the user pose selected sampled views are encoded into a video signal to cause a recipient device of the video signal to generate a display image for rendering on the image display.

Abstract: A sequence of base layer images for a base reference image display and a set of one or more sequences of beta scale maps corresponding to one or more non-base reference image displays are generated. A subset of one or more sequences of beta scale maps is determined in the set of one or more sequences of beta scale maps based at least in part on display capabilities of a target image display. The sequence of base layer images, along with the subset of one or more sequences of beta scale maps, is encoded into a video signal to cause a recipient device of the video signal to generate a sequence of display images from the sequence of base layer images and the subset of one or more sequences of beta scale maps for rendering on the image display.

Abstract: An input image to be coded into a video signal and a target image are received. The input image and the target image depict same visual content. One or more beta scaling method indicators and one or more sets of one or more beta scale parameters are generated. The one or more beta scaling method indicators indicate one or more beta scaling methods that use the one or more sets of beta scale parameters to perform beta scaling operations on the input image to generate a reconstructed image to approximate the target image. The input image, along with the one or more beta scaling method indicators and the one or more sets of beta scale parameters. is encoded into the video signal for allowing a recipient device of the video signal to generate the reconstructed image.

Abstract: A method for generating a high-dynamic-range (HDR) image includes (a) denoising a short-exposure-time image, wherein the denoising comprises applying a first guided filter to the short-exposure-time image, the guided filter utilizing a long exposure-time-image as its guide, (b) after the step of denoising, scaling at least one of the short-exposure-time image and the long-exposure-time image to place the short-exposure-time image and the long-exposure-time image on a common radiance scale, and (c) after the step of scaling, merging the short-exposure-time image with the long-exposure-time image to generate the HDR image.

Abstract: An image sensor includes a plurality of pixels, each pixel belonging to one of N subframes each characterized by (a) a same exposure-time sequence that includes a short exposure-time alternating with a long exposure-time, and (b) a respective temporal offset equal to a multiple of the short exposure-time. A method for encoding a video stream captured by the image sensor includes (i) for each subframe, linearly combining a long-exposure image, captured at the long exposure-time, and a short-exposure image, captured at the short exposure-time, to yield a residual image, (ii) combining at least some of the long-exposure images from the N subframes to yield a full-frame image having a higher resolution than any long-exposure image, (iii) encoding the full-frame image into a base layer of the video stream, and (iv) encoding at least some of the residual images from the N subframes into an enhancement layer of the video stream.

Abstract: A process for producing alpha-olefins comprising contacting an ethylene feed with an oligomerization catalyst system in an oligomerization reaction zone under oligomerization reaction conditions to produce a product stream comprising alpha-olefins wherein the catalyst system comprises an iron-ligand complex and a co-catalyst and the molar ratio of oxygen to iron being fed to the oligomerization reaction zone is of from 1:1 to 200:1. Alternatively, the molar ratio of oxygen to aluminum in MMAO being fed to the oligomerization reaction zone is less than 1:5.

Abstract: The present invention relates to method and an apparatus for quantitatively analyzing a gaseous process stream, in particular a stream from a process for producing ethylene carbonate and/or ethylene glycol, in particular where such stream comprises gaseous organic iodides.

Abstract: Occluded image fragments are sorted in size. The largest image fragment is used to size a quadtree node in a layout mask for a disocclusion atlas used to store the image fragments. The sorted image fragments are stored into the disocclusion atlas using the layout mask such as each image fragment is hosted with a best fit quadtree node in the disocclusion atlas. A video signal may be generated by encoding one or more reference images and the disocclusion atlas storing the image fragments. The image fragments can be used by a recipient device to fill disoccluded image data in disoccluded spatial regions in a display image synthesized from the reference images.

Abstract: Saliency regions are identified in a global scene depicted by volumetric video. Saliency video streams that track the saliency regions are generated. Each saliency video stream tracks a respective saliency region. A saliency stream based representation of the volumetric video is generated to include the saliency video streams. The saliency stream based representation of the volumetric video is transmitted to a video streaming client.

Abstract: A process for the preparation of ethylene glycol comprising the steps of: a) supplying a first gas composition comprising ethylene oxide and carbon dioxide to an ethylene oxide absorber and allowing the gas composition to pass upwards through an absorption section; b) supplying a lean absorbent to the top of the absorption section and allowing the lean absorbent to pass downwards through the absorption section; c) intimately contacting the gas composition with lean absorbent on the trays in the absorption section in the presence of one or more catalysts to produce a fat absorbent stream comprising ethylene glycol and ethylene carbonate; d) withdrawing fat absorbent from the absorber; and e) withdrawing a second gas composition from the top of the absorber.

Abstract: Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the display layer. In another technique, the light source layer's point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.

Abstract: A process for producing ethylene glycol and/or ethylene carbonate, said process comprising contacting at least a portion of a recycle gas stream comprising an alkyl iodide impurity with a guard bed system positioned upstream of an ethylene oxide reactor to produce a treated recycle gas stream, wherein the guard bed system comprises silver on alumina; contacting an epoxidation feed stream comprising an ethylene feed stream, oxygen, chloride moderator, and at least a portion of the treated recycle gas stream with an epoxidation catalyst in the ethylene oxide reactor to produce an epoxidation reaction product comprising ethylene oxide; and contacting at least a portion of the epoxidation reaction product comprising ethylene oxide with a liquid absorbent in the presence of an iodide-containing catalyst in an absorber to produce a product stream comprising ethylene carbonate and/or ethylene glycol and the recycle gas stream comprising the alkyl iodide impurity.

Abstract: The present invention relates to method and an apparatus for quantitatively analyzing a gaseous process stream, in particular a stream from a process for producing ethylene carbonate and/or ethylene glycol, in particular where such stream comprises gaseous organic iodides.

Abstract: A data structure defining a high dynamic range image comprises a tone map having a reduced dynamic range and HDR information. The high dynamic range image can be reconstructed from the tone map and the HDR information. The data structure can be backwards compatible with legacy hardware or software viewers. The data structure may comprise a JFIF file having the tone map encoded as a JPEG image with the HDR information in an application extension or comment field of the JFIF file, or a MPEG file having the tone map encoded as a MPEG image with the HDR information in a video or audio channel of the MPEG file. Apparatus and methods for encoding or decoding the data structure may apply pre- or post correction to compensate for lossy encoding of the high dynamic range information.