238 results about "Stereoscopic view" patented technology

Methods and apparatuses to generate stereoscopic views for image guided surgical navigation. One embodiment includes transforming a first image of a scene into a second image of the scene according to a mapping between two views of the scene. Another embodiment includes generating a stereoscopic display of the scene using a first image and a second image of a scene during a surgical procedure, where a position and orientation of an imaging device is at least partially changed to capture the first and second images from different viewpoints. A further embodiment includes: determining a real time location of a probe relative to a patient during a surgical procedure; determining a pair of virtual viewpoints according to the real time location of the probe; and generating a virtual stereoscopic image showing the probe relative to the patient, according to the determined pair of virtual viewpoints.

In a presently preferred embodiment of the invention, a three-dimensional scene is reproduced on a specialized light display which offers full multiviewpoint capability and auto-stereoscopic views. The displayed image is produced using a set of M two-dimensional images of the scene collected at a set of distinct spatial locations. These M two-dimensional images are processed through a specialized mathematical encoding scheme to obtain a set of NxK display-excitation electrical-input signals, where K is the number of pixels in the display, and N<=M is the number of individual light-radiating elements within one pixel. The display is thus comprised of a total of NxK light-radiating elements. Each of the K pixels is adapted for control of their associated radiance patterns. The display is connected for response to the set of NxK display-excitation electrical-input signals. In this manner, the display provides a multiviewpoint and autostereoscopic three-dimensional image associated with the original three-dimensional scene. An alternative embodiment of the invention is utilized to provide efficient storage and display of 3D computer graphics images.

The present invention provides a system and single or multi-functional element device that can be inserted and temporarily placed or implanted into a structure having a lumen or hollow space, such as a subject's abdominal cavity to provide therewith access to the site of interest in connection with minimally invasive surgical procedures. The insertable device may be configured such that the functional elements have various degrees of freedom of movement with respect to orienting the functional elements or elements to provide access to the site from multiple and different orientations/perspectives as the procedure dictates, e.g., to provide multiple selectable views of the site, and may provide a stereoscopic view of the site of interest.

In performing stereoscopic view, a shift information memory (21) stores, as a number of pixel lengths, an offset indicating how far in a right direction or a left direction to move coordinates of pixels to realize stereoscopic view. When realizing stereoscopic view, a plane shift engine (20) moves the coordinates of image data in a graphics plane in the right direction or the left direction by the number of pixel lengths indicated by the offset. When a scale of video data targeted for stereoscopic view is changed by a basic graphics plane (15), a shift distance of pixel coordinates by the plane shift engine (20) is based on a number of pixel lengths obtained by multiplying the offset by a changed scaling factor in the horizontal direction.

A method of providing visual documentation of a surgical procedure. The method includes providing at least one video camera for generating a video signal in a digital format, the video signal representative of a stereoscopic view pair of a surgical subject. A template is created having a graphical content pertinent to the subject of the stereoscopic view pair. The template is displayed such that the template is overlaid contemporaneously with the stereoscopic view pair.

Systems for three-dimensional viewing and projection aimed at full-color flat-screen binocular stereoscopic viewing without the use of eyeglasses for the viewer. According to the invention, light emanating from a display or projected thereat presenting a left image and a right image is directed only to the appropriate left or right eyes of at least one viewer using various combinations of light polarizing layers and layers of light rotating means.

Provided is a recording medium allowing random access to be performed in playing back 3D graphics. The recording medium comprises a digital stream area where a digital stream including temporally-arranged GOP pairs is recorded; and a map information area where map information is recorded, the map information indicating entry addresses in one to one correspondence with entry times on a time axis of the digital stream, each entry address showing a beginning of a corresponding GOP pair region in the digital stream area, wherein each GOP pair including first-type and second-type GOPs, each first-type GOP is data indicating a plain view picture set to be played back from a corresponding entry time, and each second-type GOP is data to be played back with a corresponding first-type GOP to provide a stereoscopic view, the data indicating a difference between a stereoscopic picture set and the plain view picture set.

Methods for generating stereoscopic views from monoscopic endoscope images and systems using the same are provided. First, monoscopic images are obtained by capturing images of organs in an operating field via an endoscope. A back-ground depth map of the operating field is obtained for each image. An instrument depth map corresponding to an instrument is obtained for each image, wherein the instrument is inserted in a patient's body cavity. The background depth maps and the instrument depth maps are merged to generate an integrated depth map for each image. Stereoscopic views are generated according to the monoscopic images and the integrated depth maps.

A high-speed, three-dimensional, gamma-ray imaging method and system as well as a detector and array of such detectors for use therein are provided which characterize radioactivity distributions in nuclear and radioactive waste and materials facilities by superimposing radiation images on a view of the environment using see-through display screens or shields to provide a stereoscopic view of the radiation. The method and system provide real-time visual feedback about the locations and relative strengths of radioactive sources. The method and system dynamically provide continuous updates to the displayed image illustrating changes, such as source movement. A pair of spaced gamma-ray cameras of a detector subsystem function like “gamma eyes”. A pair of CCD cameras may be coupled to the detector subsystem to obtain information about the physical architecture of the environment. A motion tracking subsystem is used to generate information on the user's position and head orientation to determine what a user “sees”. The invention exploits the human brain's ability to naturally reconstruct a 3D, stereoscopic image from 2D images generated by two “imagers” separated by a known angle(s) without the need for 3D mathematical image reconstruction. The method and system are not only tools for minimizing human exposure to radiation thus assisting in ALARA (As Low As Reasonably Achievable) planning, but also are helpful for identifying contamination in, for example, laboratory or industrial settings. Other optically-invisible radiation such as infrared radiation caused by smoldering fires may also be imaged. Detectors are manufactured or configured in curvilinear geometries (such as hemispheres, spheres, circles, arcs, or other arrangements) to enable sampling of the ionizing radiation field for determination of positional activity (absolute or relative amounts of ionizing radiation) or spectroscopy (energy distributions of photons). More than one detector system may be used to obtain three-dimensional information. The detector systems are specifically suitable for direct visualization of radiation fields.

A virtual reality hardware and software platform comprised of a stereoscope which attaches to a mobile touchscreen computer/tablet. The stereoscope, in which the user looks through, covers just the top portion of the tablet screen. This top portion displays the stereoscopic view of a virtual environment. The bottom portion displays the two-dimensional view. The user touches the view with his/her thumbs and/or fingers in order to interact with and travel through the virtual environment seen in the view.

A line blanker system for converting a stereoscopic image into a line-blanked stereoscopic image suitable for stereoscopic viewing on a standard non-interleaved display device is provided. The system includes a method for controlling the line blanker. According to the invention, one can enable and disable the line blanker, identify the first line of the image being processed and determine whether the first line is for viewing by the left eye or the right eye of a viewer. In addition, the invention includes a line doubler. The line doubler provides enhanced brightness and resolution by replacing the blanked line with a double of the line immediately adjacent to the blanked line.

A process for formatting rivalrous fusible images having similarly shaped stimuli of similar binocular luminance and having other similarly shaped stimuli of different binocular luminance, which metamorphose during perception into identifiable shapes that distinguish fusion from suppression. The preferred embodiment is an invertible stereoscope for viewing rivalrous images, non-rivalrous images, and stereograms, having adjustable eyepieces, lighting control of front and rear chambers, and lighting control of right and left sides. In a further preferred embodiment, rivalrous stimuli in a complementary color scheme are viewed on printed material or on a computer screen through lenses of complementary colors. Neutral density filter placement that asymmetrically attenuates light to the eyes for detection of sub-threshold afferent defects is disclosed.

Disclosed is an improved method and apparatus for forming color images on radiation absorptive surfaces, having improved brightness and color characteristics. The apparatus can be realized in various forms, including Xeroxgraphic and ink-jet printing equipment. In the illustrative embodiments, color images composed from polarization-encoded perspective images are produced for use in stereoscopic viewing full-color 3-D objects represented therein using a pair of electrically-passive circularly-polarizing eyeglasses. Super-white and additive-primary coloring media is used to form the polarization-encoded composite images so that full depth of color (e.g. thousands of color values) is imparted to the 3-D objects graphically represented therein. The coloring media utilized embodies both broadband and spectrally-tuned CLC-based microflakes having symmetrical reflection characteristics which provide for improved brightness and color uniformity characteristics.

The invention discloses a kind of method of measurement the solid particle three-dimensional density field in the gas and solid two phase flow, velocity field and equipment. The particle flux transmitting tube is laid at the front of high rate stereoscopic vision system which is consisted by the double look-out angle lens stereoscope and the high rate camera and the jet stream particle is refracted through the double look-out angle lens stereoscope mirror face and the single high rate camera target area can achieve the particle flux graphic with two different angles at the same time and after the graphic is input the computer a program module which is consisted by the pattern recognition algorithm procedure and three-inversion projection algorithm procedure treats the particle diagram and then get the transient three-dimensional density field. The program module treats series microsecond class time sequence changeable particle graphic and gets the particle three-dimensional movement trace and the velocity field. It is stabilize by using the single camera system and overcomes the problem of multiple camera system's constructer is complex and the synchronism is bad.

A stereoscopic image display apparatus capable of generating a cursor that moves according to user operation to allow stereoscopic view with a stereoscopic image including a set of images with parallax and capable of combining and displaying the cursor on the stereoscopic image acquires a parallax amount of the stereoscopic image at a location where the cursor is combined and displayed on the stereoscopic image and calculates a moving speed of the cursor. The stereoscopic image display apparatus determines whether the cursor is moving based on the calculated moving speed and generates the cursor including a certain predetermined value as the parallax amount of the cursor if it is determined that the cursor is moving. The stereoscopic image display apparatus generates the cursor by setting the parallax amount of the cursor to the parallax amount of the acquired stereoscopic image if it is determined that the cursor is not moving.

In a presently preferred embodiment of the invention, a three-dimensional scene is reproduced on a specialized light display which offers full multiviewpoint capability and auto-stereoscopic views. The displayed image is produced using a set of M two-dimensional images of the scene collected at a set of distinct spatial locations. These M two-dimensional images are processed through a specialized mathematical encoding scheme to obtain a set of NxK display-excitation electrical-input signals, where K is the number of pixels in the display, and N<=Ed is the number of individual light-radiating elements within one pixel. The display is thus comprised of a total of NxK light-radiating elements. Each of the K pixels is adapted for control of their associated radiance patterns. The display is connected for response to the set of NxK display-excitation electrical-input signals. In this manner, the display provides a multiviewpoint and autostereoscopic three-dimensional image associated with the original three-dimensional scene. An alternative embodiment of the invention is utilized to provide efficient storage and display of 3D computer graphics images.

The invention discloses an estimation system and method based on inter-image mutual crosstalk in a projection stereoscope visible area. The estimation system comprises a projector, a cylindrical lens screen, a three-dimensional fine-tuning frame mechanical device, a computer and a video camera, wherein the distance between the projector and the cylindrical lens screen is adjusted by the three-dimensional fine-tuning frame mechanical device, the cylindrical lens screen comprises a layer of cylindrical lens grating plate and a diffuse layer, and the projector is connected to the computer which is connected with to the video camera through an image acquisition card. The method provided by the invention is estimated and operated by adopting the estimation system and comprises the following steps of: (1) debugging the estimation system based on the inter-image mutual crosstalk in the projection stereoscope visible area; and (2) calculating the mutual crosstalk among images in the projection stereoscope visible area. By utilizing the video camera as a brightness sensor, the system and the method can individually and accurately judge the inter-image mutual crosstalk degree in the projection stereoscope visible area.

A stereoscopic image display apparatus in accordance with the present invention solves a problem with a conventional multi-view stereoscopic image display apparatus in that the resolution of each parallax image deteriorates as the number of provided parallax images increases. The inventive stereoscopic image display apparatus forms a plurality of images for right and left eyes in observation regions for the observer's right and left eyes to enable the observer to obtain a stereoscopic view. At the same time, a region where no images are formed is provided between the right eye and left eye observation regions, because no actual observation is carried out in the region. This makes it possible to reduce the total number of parallax images without changing the number of actually observed parallax images, thus achieving a higher resolution of each parallax image actually observed.

A photographic stop with two apertures is disposed at a position substantially conjugate to the anterior ocular segment of the eye being examined and at a position on the object-side focal surface of an image-forming lens. An eye fundus image is guided via a lattice barrier disposed on the image-side focal surface of the image-forming lens to an imaging CCD. The photographic stop, image-forming lens, lattice barrier and CCD are moved as a unit for focus adjustment. With such a configuration, the photographic stop is always positioned upon the object-side focal surface of the image-forming lens with the optical system kept telecentric even when the focus is adjusted to compensate for differences in diopter of the eye. This eliminates the phenomenon of a stereoscopic view that becomes more concave or convex the nearer to the periphery of the screen and provides good images of the fundus for stereoscopic viewing without any crosstalk of the left and right fundus images upon the image pickup surface.