743 results about "Stereoscopic imaging" patented technology

Systems and methods for stereo imaging with camera arrays in accordance with embodiments of the invention are disclosed. In one embodiment, a method of generating depth information for an object using two or more array cameras that each include a plurality of imagers includes obtaining a first set of image data captured from a first set of viewpoints, identifying an object in the first set of image data, determining a first depth measurement, determining whether the first depth measurement is above a threshold, and when the depth is above the threshold: obtaining a second set of image data of the same scene from a second set of viewpoints located known distances from one viewpoint in the first set of viewpoints, identifying the object in the second set of image data, and determining a second depth measurement using the first set of image data and the second set of image data.

A stereoscopic imaging system incorporates a plurality of imaging devices or cameras to generate a high resolution, wide field of view image database from which images can be combined in real time to provide wide field of view or panoramic or omni-directional still or video images.

Provided is a surgical instrument comprising a node rotatably mounted within a restraining structure at the distal end of a shaft, The node can be rotated allowing manipulation and orientation of a surgical tool extending from the node at the distal end of the shaft through control remote from the distal end of the shaft. Cameras may also be located at the distal end of the shaft allowing stereoscopic imaging to be conveyed to an operator. The surgical instrument is well suited for administering biologically active substances to a desired location. The method of administration comprises insertion of a flexible shaft comprising a channel, controlling the location of the distal end of the shaft through control cables within the shaft, and projecting the biologically active substance from the end of the channel at the desired location.

A method and system for presenting both autostereoscopic images and planar images in a single display is disclosed. The design comprises processing the planar images received in the form of planar image data. The processing comprises at least one from a group comprising selectively employing bleed-through processing to enhance the planar image data when viewed through a lens sheet comprising slanted lenticules, selectively introducing blurring into the planar image data, and selectively employing anti-alias processing to the planar image data. Certain super pixels may be computed that differ from standard pixels, and lenticules in the data sheet may be slanted at desired angles. The physical lenticules may cause bleed-through that may be processed. Resolution may be computed after processing, and the resolution implemented for display. Mode switching between planar and autostereoscopic imaging may be provided in the form of Metadata or visible flags.

A color wheel assembly for use in a projector for stereoscopic imaging. The color wheel assembly includes a first portion able to polarize light in a first orientation and a second portion able to polarize light in a second orientation. The first and second portions allow the color wheel assembly, when in an image projector, to produce separate polarized images to achieve a stereoscopic image.

A stereo imaging system comprises a stereoscopic camera having left and right image capturing elements for capturing stereo images; a stereo viewer; and a processor configured to modify the stereo images prior to being displayed on the stereo viewer so that a disparity between corresponding points of the stereo images is adjusted as a function of a depth value within a region of interest in the stereo images after the depth value reaches a target depth value.

A method of assisting a driver in aligning a vehicle hitch with a trailer hitch and electronic trailer alignment system includes providing a stereoscopic-imaging system and positioning the imaging system at one of the vehicle hitch or the trailer hitch. The imaging system includes at least two image sensors. At least two different images of a surface at the other of the vehicle hitch or the trailer hitch are captured with the at least two image sensors. Position data is captured from the at least two different images of the surface at the other of the vehicle hitch or the trailer hitch. The position data defines a position of the other of the vehicle hitch or the trailer hitch with respect to the one of the vehicle hitch or the trailer hitch. Steering data that will cause the vehicle hitch to approach the position of the trailer hitch is determined.

A stereoscopic display system employs narrowband illumination light beams and passive glasses with built-in interference filters. The system is also compatible with multiple viewing functions.

An improved apparatus is disclosed for providing a stereoscopic image for viewing by a viewer, with improved resolution. The apparatus includes a generally planar display comprising a two-dimensional array of uniformly spaced pixels, and it further includes a generally planar parallax barrier having an area substantially coextensive with the display and spaced a prescribed uniform distance from the display. The pixel array includes a first set of sub-pixels controllable to project light in a first spectral color, a second set of sub-pixels controllable to project light in a second spectral color, and a third set of sub-pixels controllable to project light in a third spectral color, and the parallax barrier includes a repeating pattern of vertically oriented regions configured to transmit light to the viewer's first eye along light paths defined from only the first set of sub-pixels and to transmit light to the viewer's second eye along light paths defined from only the second and third sets of sub-pixels.

A system of stereo imagers, including image processing units and methods of blurring an image, is presented. The image is received from an image sensor. For each pixel of the image, a depth filter component is determined based on a focal area of the image and a depth map associated with the image. For each pixel of the image, a trilateral filter is generated that includes a spatial filter component, a range filter component and the depth filter component. The respective trilateral filter is applied to corresponding pixels of the image to blur the image outside of the focal area. A refocus area or position may be determined by imaging geometry or may be selected manually via a user interface.

A holographic see-through optical device, a stereoscopic imaging system including the same, and a multimedia head mounted system are provided. The holographic see-through optical device includes a micro display; a relay optical system, which relays an image generated by the micro display; at least one waveguide comprising at least two portions having different thicknesses or different refractive indexes; at least one first holographic optical element, which is arranged at one of the two portions; and at least one second holographic optical element, which is arranged at the other one of the two portions.

A stereoscopic imaging system for generating stereoscopic images includes a pair of cameras juxtaposed with each other in a horizontal plane each capturing a stream of video images. A controller is provided for controlling motion of each camera, determining presence of a vertical parallax between the images from each camera and converting such first and second video signal into said stereoscopic image of such object. A drive apparatus is provided for linearly moving one camera and for rotating the other camera in response to at least one control signal received from the controller thereby correcting for determined vertical parallax presence. The novel drive apparatus includes an electrically powered linear drive mechanism for moving the first camera and an electrically powered motor and gear arrangement for rotating the second camera. The images are analyzed in a generally real-time manner and image capture and generation is not blocked during analysis.

Three-dimensional imaging of a breast tissue is achieved by acquiring a series of X-ray projection images from various angles. A three-dimensional image constructed from the projection images by a computer provides information to the operator to select a coordinate point within the breast from which to obtain a biopsy sample. Acquisition of projection images and construction of three-dimensional images is continued during the insertion of the needle into the breast, during positioning the needle towards the coordinate point, during the sampling and after the sampling. The advantages of utilizing tomosynthesis for breast tissue imaging over stereo imaging include better image quality, easier coordinate measurements within a tissue, ease of use of the equipment by the medical personnel, and fewer image artifact problems.

A stereo imaging based vision system to monitor the area on the two sides of either a door and control door motion according to the motion of 3D objects in the viewing area. The system calibrated to provide heights above the ground plane for any point in the field of view. Therefore, when any object enters the field of view, it generates interest points called “features”, the heights of which are measured relative to the ground plane. These points are then clustered in 3D space to provide “objects”. These objects are then tracked in multiple frames to provide “trajectories”. Such a system could then control the door motion (open, close, stall) based on the various pieces of information generated about the object.

The invention relates to a virtual viewpoint rendering method, which belongs to the field of image processing and stereo imaging and can achieve high-quality virtual viewpoint rendering. The technical scheme adopted by the virtual viewpoint rendering method comprises the following steps: (1) preprocessing depth maps; (3) performing image fusion on the two virtual viewpoint images by using distance weighted values, eliminating most of hollows and producing a fusional initial virtual view; and (4) filling the hollows of the initial virtual view by a method on the basis of figure-ground segregation and obtaining a final virtual viewpoint image. The virtual viewpoint rendering method is mainly applicable to image processing and stereo imaging.

The invention provides an electrochromic module and a three-dimensional imaging display device provided with the same. The electrochromic module comprises a first substrate, a second substrate, at least one electrochromic layer and at least one ionic layer. At least one first conducting element is arranged on the upper surface of the first substrate. The electrochromic layer is arranged between the first substrate and the second substrate. The ionic layer is arranged on the surface of the electrochromic layer and is prepared by dissolving a material which is mixed with an organic material and an inorganic material into a solvent. The ionic layer not only can be used as an ion supplier and is also an electrochromic material, so that the ionic layer can be used an auxiliary discoloring layer to improve the differential value of the optical penetrability. In the invention, by the transferring and the transmission of the ions between the organic material and the inorganic material, the electrochromic module and the three-dimensional imaging display device have the advantages of high and uniform discoloring speed, lower driving voltage and the like.

The present invention relates to a multi-viewpoint tridimensional image synthesis method based on a raster LCD auto-stereoscopic display, which belongs to the field of raster auto-stereoscopic imaging technology. The method includes three steps; firstly, the method determines one subpixel on a LCD screen belongs to which raster unit control range; secondly, according to the arrangement of the subpixels of each raster unit, the view of each viewpoint is subsampled; thirdly, the subsampled image information of each viewpoint is arranged to compose an auto-stereoscopic display image. By the embodiment of the present invention, good synthesis effect and stereoscopic impressions can be obtained, and the subjective evaluation of several observers further verifies the validity of the universal synthesis method. The universal multi-viewpoint tridimensional image synthesis method can be widely applied to raster LCD multi-viewpoint auto-stereoscopic display devices and help to promote the industrialization of the devices.