233 results about "Three dimensionality" patented technology

A microscope is disclosed which determines a complex three-dimensional representation of an object based on a series of recordings of the light wave diffracted by the object, wherein the direction of the wave lighting of the object varies between two succesive recordings. The diffracted wave interferes with a reference wave on a receiving surface and a frequency representation of the diffracted wave is computed from interference patterns received on the receiving surface. A plurality of frequency representations of diffracted waves are then superimposed yielding a frequency representation of the object. The phase of each frequency representation of a diffracted wave is shifted in order to compensate for variations of the phase difference between the reference wave and the wave lighting of the object.

A method and device is for displaying driving instructions. The aim is to achieve a better consistency between the image recorded of the surrounding terrain by the vehicle camera and presented in the driver's field of vision, and the keyed-in calculated driving instruction. For this purpose, the inclination of the vehicle about its longitudinal axis and lateral axis relative to the road surface as well as the incline of the road or the three-dimensionality of the terrain are taken into consideration when a keyed-in driving instruction from the angle of view of the driver is produced.

A visual image system is constructed as including: a three-dimensional visual image reproducer for transmitting a three-dimensional video signal; a parallax quantity detecting section for detecting a parallax quantity in the three-dimensional video signal from the three-dimensional visual image reproducer; a fatigue measure estimating section for estimating the degree of fatigue based on the detected parallax quantity and outputting an image switching signal correspondingly to a fatigue measure estimating quantity; a 3D / 2D image switching section for providing an output by switching between three-dimensional and two-dimensional images based on the image switching signal; and an image display section for displaying a three-dimensional image or a two-dimensional image. The visual image system thereby fulfills the capability of suitably controlling the degree of three-dimensionality of stereoscopic images by inferring from the inputted video signal the degree of effects likely to be produced on the observer.

Three-dimensional representation apparatus are disclosed. In one implementation, the three-dimensional representation apparatus includes a first two-dimensional picture forming device configured to form a first two-dimensional picture and a second two-dimensional picture forming device configured to form a second two-dimensional picture. The luminance of the first and second two-dimensional pictures may be individually adjusted. The first and second two-dimensional picture forming devices are positioned to be out of light paths for projecting the two-dimensional pictures formed by the other two-dimensional picture forming device. The three-dimensional representation apparatus may also include a focal distance adjustment optical element configured to adjust focal distances for each of the first and second two-dimensional pictures differently. A picture combining optical element of the three-dimensional representation apparatus is configured to combine the first and second two-dimensional pictures comprising different focal distances along the same optical axis. A display optical element of the three-dimensional representation apparatus is configured to display three-dimensional images by allowing the two-dimensional pictures combined by the picture combining optical element to be projected as virtual images at focusing positions displaced from each other along a sight line of a user.

The invention discloses an actually measured data-based spacecraft component assembly simulation method. The assembly simulation method includes the following steps that a parametrized three-dimensional rapid modeling method is utilized to generate actually measured dimension-based three-dimensional small component models after final assembly inspection personnel actually measure and input the dimensions of key small component interfaces into a corresponding parametrized three-dimensional modeling system; a reverse point cloud curved surface fitting method is utilized to convert the surface shapes of real objects of large key components into discrete geometric coordinate points, and on the basis, the modeling of complex curved surfaces is carried out, so that reverse three-dimensional digitalized models of the large key components are formed; the assembly process is simulated and analyzed; ergonomics is simulated and evaluated. By combining a virtual reality scene with reverse real object modeling, the actually measured data-based spacecraft component assembly simulation method disclosed by the invention detects interference points and risk sources in advance to find out assembly incoordination and other problems, thus increasing the reliability of the final spacecraft assembly process and the efficiency of final assembly.

Video game play rendered using a panoramic view of a cube map style rendering uses an associated depth map to supply three-dimensionality to the pre-rendered scene. The resulting panoramic rendering may be indistinguishable from rendering the original scene in real-time except that the background is of pre-rendered quality.

A method of scaling a three-dimensional model (100) into a scaled three-dimensional model (108) in a dimension which is related with depth which method is based on properties of human visual perception. The method is based on discrimination or distinguishing between relevant parts of the information represented by the three-dimensional model for which the human visual perception is sensitive and in irrelevant parts of the information represented by the three-dimensional model for which the human visual perception is insensitive. Properties of the human visual perception are e.g. sensitivity to a discontinuity in a signal representing depth and sensitivity to a difference of luminance values between neighboring pixels of a two-dimensional view of the three-dimensional model.

The invention discloses an on-line detection device and method of mineral flotation froth flow velocity on the basis of three-dimensional visual information. Kinect is adopted to obtain the color image and the depth information of forth to form the three-dimensional visual information of the forth. A current frame of image and a previous frame of image are subjected to characteristic point extraction and matching in an embedded heterogeneous multi-core processor, and a three-dimensional space coordinate of the image characteristic point is calculated by the pixel coordinate information and the depth information of the characteristic point and a pinhole projection imaging model. The three-dimensional space coordinate and the image acquisition rates of the matched characteristic points of two frames of images are used for calculating a movement rate, i.e., the froth flow velocity of the froth on three dimensionalities. The real-time on-line non-contact detection of the flotation cell froth flow velocity is realized, and the on-line detection device has the characteristics of being small in volume, high in mobility, low in power consumption, low in cost, high in detection speed and high in reliability, is especially suitable for the real-time on-line measurement of the field froth flow velocity index of mineral flotation, and is favorable for realizing the automatic monitoring of a flotation process so as to improve mineral separation efficiency.

The present invention relates to a 3D scanner and a 3D model reconstructing method thereof, belonging to a metering device with the characteristic of adopting optical means and a metering method thereof in the 3D scanning field. The 3D scanner mentioned in the present invention belongs to a grating scanning device. The 3D scanner consists of an image acquisition device, a grating generation device, a calibration block, a computer communication card and a peripheral machinery supporting facility. The work flow and characteristics of the present invention are that: firstly the image acquisition device is calibrated; then reflected images produced by a tested object under the irradiation of different structured light patterns, so as to figure out the reflection point positions (point clouds) on the tested object and the positions of mark points stuck on the tested object; finally, an integral 3D model of the tested object is synthesized through the mutual matching relation between the point clouds and the mark points acquired every time. The present invention relates to a grating scanning device and puts forward a method of utilizing the device to splice repeatedly acquired data.

A method of mapping a collection of images, or other higher dimensional items including text documents, and three-and-higher dimensional objects, onto a navigable grid for browsing via a user interface comprises obtaining for each of the images a list of nearest neighbor images and similarity scores for each nearest neighbor; placing a first image on a cell within a grid; from a respective list of nearest neighbors of said first image, finding images that maximize a compatibility score with images already placed on the grid and placing resulting images on neighboring cells; and continuing to place further images on the grid until all cells visible to a user are filled with images. As the user pans or zooms the grid, more cells move into the visible area of the screen and are filled with images in the same way.

A method and system for generating an image database for multifeatured objects. The invention uses one or more three-dimensional representations of multifeatured objects of the same generic type as the object to be identified to generate as many images as desired. These images are used to populate an image database that may be used for training and / or identification purposes.

A reflective printed article includes a substrate having a top surface and a bottom surface with a graphic image printed thereon. A reflective or glossy ink layer is printed over the entire top surface of the substrate. A graphic image is printed over the reflective ink layer. The image may cover the entire portion of the reflective layer or only selected portions thereof. The graphic image includes hidden or latent images printed within the graphic image layers. An optional glossy layer of transparent ink may be printed over the graphic image. A textured pattern of lines is printed or applied in sections over the optional glossy layer or graphical image, with each line in the section printed at the same angle or orientation, with the lines of adjacent sections printed at different angles in order to reflect light in different directions to create the illusion of depth, three-dimensionality, hidden images and motion.

An image processing apparatus and an image processing method reconstruct a three-dimensional image of an object which expresses a texture, glossiness, and three-dimensionality with realism. The image processing apparatus produces, from a physical object, data representing a shape and a surface feature of the physical object, holds the data as a three-dimensional model, and presents a three-dimensional image under conditions of an illumination environment and line of sight designated by a user when the three-dimensional image is reconstructed. To present the three-dimensional image at a high speed with realism, the apparatus and method use new and particularly advantageous features in a generation process and in a data format used in the three-dimensional model.

The invention relates to a method, a device and a system for processing a cursor. The method for processing the cursor comprises the following steps: displacement information of three dimensionality is generated by a cursor generating device according to the displacement thereof, wherein the three dimensionality includes two plane dimensionality and one depth dimensionality; the optical parallax of the two eye view which corresponds to the cursor is adjusted in real time according to the displacement information; and the two eye view which corresponds to the cursor is output into three-dimensional scene displaying equipment. The system for processing the cursor comprises the cursor generating device and a cursor adjusting device. The cursor in three-dimensional displaying scene can be correspondingly changed according to the displacement information of the depth dimensionality and accordingly can be displayed in different deep levels of the three-dimensional displaying scene, thereby facilitating the operation of the user in the three-dimensional displaying scene and ensuring that the three-dimensional displaying scene has stronger third dimension.

The invention provides a depth feature extraction method for a three-dimensional model. The method includes the steps of firstly, extracting a polar view of a three-dimensional model as training input data of a deep convolutional neural network; secondly, constructing the deep convolutional neural network, and training the polar view; thirdly, inputting the polar view to the deep convolutional neural network for training till the convergence of the deep convolutional neural network, and determining an internal weight of the trained deep convolutional neural network; and fourthly, inputting the polar view of the three-dimensional model whose feature is to be extracted to the trained deep convolutional neural network, and calculating a feature vector of a full-link layer in the deep convolutional neural network as the depth feature of the three-dimensional model whose feature is to be extracted. According to the invention, the deep convolutional neural network is constructed, the weight is corrected through iterations, the residual is reduced, and thus the network converges. After the training is completed, the full-link layer of the convolutional neural network is extracted as the depth feature of the polar view of the three-dimensional model.

Disclosed is three-dimensional video viewing system (1) including: display system (2) that displays three or more videos of different parallaxes in a time-division multiplexing manner, and outputs a control signal that indicates a switching timing of the videos; input means (7) for designating an arbitrary display mode among a plurality of display modes in which a plurality of three-dimensional videos different from one another in three-dimensionality are defined by a combination of two of the three or more videos; two shutters that switch a state between light transmission and light blocking; and a shutter drive circuit that specifies the switching timing of the two videos corresponding to the display mode designated by input means (7) based on the control signal, and independently controls opening / closing of the shutters at the specified switching timing of the videos.

A method for setting the order of reference frames for multi-view coding and a recorded medium recording the method are disclosed. The method of setting the order of reference frames, in accordance with an embodiment of the present invention, comprises the steps of selecting the n (integer) number of frames of the same kind that have a same-view relation with said current frame and are encoded or decoded prior to said current frame as a first reference frame, selecting the m (integer) number of frames of the same kind that have a same-view relation with said current frame and have an inter-view relation with a frame of the same kind, which is encoded or decoded immediately before, as a second reference frame, wherein the frame of the same kind has a same-view relation with said current frame, and encoding or decoding said current frame by making reference to the frames of the same kind included in said first reference frame and said second reference frame. With the present invention, an improved picture quality and three-dimensionality can be provided, and the delay in processing time can be prevented when using the reference frame.

The invention discloses a three-dimensional model simplification method, and relates to the technical field of model building. The method is characterized by comprising the following steps of unifying a data structure; combining texture and updating a coordinate; and integrating model data and reconstructing the model data. With the method disclosed by the embodiment of the invention, heterogeneous data processing and texture combination can be achieved, the number in model texture is reduced, the memory of a video card is reduced, the utilization efficiency of hardware resources is improved to the greatest extent, the number of model top points is reduced, the usage of a magnetic disc space is reduced, the structure hierarchy of the model data is reduced, the model loading speed is increased, the data resource access efficiency is improved, the data dispatching of a big-data three-dimensional scene is accelerated, and the rendering of the three-dimensional scene is more smooth.

The invention provides a complicated three-dimensional model drawing method based on images. Vertexes are uniformity selected from a spherical surface surrounding a model as camera coordinate positions, and a color image and a depth image of the model under a sampling visual angle are obtained by taking a sphere center as a target point of a camera. The method comprises the steps of triangularly dividing the spherical surface according to sampling point coordinates to determine a triangle where a virtual visual angle is located, taking corresponding visual angles as reference visual angles when taking vertexes of the triangle as sampling points, and drawing the model under the virtual visual angle with depth images and color images under the reference visual angles: calculating mapping relationships between the virtual visual angle and pixels in the three reference visual angles respectively with parameters of the reference visual angles, and drawing an image of the virtual visual angle with the appropriate pixels of the reference visual angles or a background pixel by taking the depth images as references, and finally, optimizing the drawn color image. The method can meet real-time requirements and obtains a very true-to-life drawing effect.

The invention relates to an intelligent matching method for trucks and cargos in highway transportation. The method comprises the following steps of: respectively providing intelligent matching methods respectively serving a resource party and a transport contractor; respectively carrying out transport capability matching degree index calculation and resource matching degree index calculation according to three dimensionalities such as transportation route, transportation cost and transportation service; and respectively recommending different calculation methods to the resource party or the transport contractor according to matching degrees so as to ensure that the resource party and the transport contractor have the same selection right. According to the method, the transport capacities,transport contractor destinations and freight destinations of which are consistent, can preferentially obtain transportation tasks through route conformity parameter calculation, so that resource waste is decreased; and freight resource configuration is scientific through carrying out comprehensive assessment on transportation costs and transportation services; and moreover, servers capture surrounding truck source information in real time by taking cargo sources as centers and capture resource parties with transportation demands by taking transport contractor positions as centers, so that the accurate matching problem is solved and the matching success rate is further improved.

The invention discloses a three-dimensional model retrieval method based on medial axis point set layered spiral information. The method extracts the medial axis point set layered spiral information as characteristic descriptors, and uses a multi-grade weighting similarity matching method which is based on Hausdorff distance for measuring the similarity of three-dimensional models. Firstly, the coordinate standardization and voxelization pretreatment of the three-dimensional models in a three-dimensional model database is implemented; and then the characteristics of the three-dimensional models are extracted and turned into the characteristic descriptors so as to generate a characteristic database; when in retrieval, the three-dimensional model sent by users is subject to standardization, voxelization and characteristic extraction sequentially according to the above steps and method so as to obtain the characteristic descriptors of the three-dimensional model; finally, the characteristic descriptors are matched with the characteristic in the characteristic database to generate retrieval results. The method has the advantages that the description of shape characteristic is more complete, the comparison of shape characteristic descriptors is simplified to the problem of distance calculation of vectors of different length and the method has good performance and high efficiency.

A method and apparatus for synchronizing presentation of multi-domain measurements using actual or quasi 3-D representation. The synchronization between data streams acquired in different measurement domains is performed by using timestamps, a common trigger event, or a common clock, or a combination of any or all of them. In this way, for example, a transient anomaly in the RF spectrum of a communications signal may be correlated with, and displayed with, a related corrupted data communications packet.

A multiscale imaging system including microcameras having controllable focus, dynamic range, exposure, and magnification is disclosed. The objective lens forms a three-dimensional image field of a scene. Image regions of the image field are relayed by the microcameras onto their respective focal-plane arrays, which collectively provide a plurality of digital sub-images of the scene. The digital sub-images can then be used to form a composite digital image of the scene that can have enhanced depth-of-field, enhanced dynamic range, parallax views of the scene, or three-dimensionality.

The invention relates to a method and a system for virtual surgery training based on mixed reality. The method establishes a digital three-dimensional model including a bony structure and a soft tissue according to whole body volume data of a real human body, so that the model data is accurate and can clearly reflect bones, muscles, blood vessels, and nerves and other information of a human body.Combined with a mixed reality head display, dynamic teaching, dynamic presentation, real-time communication and multi-site consultation and other functions can be realized. Coordinates of the digitized three-dimensional model are converted into a world coordinate system established with an operation platform as standard, and the coordinates are matched to an operation platform plane to achieve effect that a virtual object is naturally placed on the plane, thereby creating a realistic surgical atmosphere. According to relative positional relationship between surgical instruments and tissues inthe three-dimensional model, corresponding force feedback is applied to a hand, so that an operator can truly feel operation intensity, and experience hand tactile responses when the surgical instrument contacts different tissues and organs, so as to improve surgical training trueness.

The present invention belongs to the field of optical microscopic imaging and micro measurement technology, and is one 3D three-differential confocal microscopic imaging method with very high S / N ratio and 3D super resolution imaging capacity. The present invention fuses the three-differential confocal scanning method with high axial resolution and pupil filtering confocal scanning method with high transverse resolution to constitute the 3D pupil filtering three-differential confocal microscopic imaging method. The method may be used in measuring 3D surface appearance, 3D fine structure, micro step, micro channel, IC line width, etc.

The invention provides an integral imaging three-dimensional display center depth plane adjusting method. According to the method, a micro image array with a center depth plane z0 is acquired through integral imaging shooting, integral imaging three-dimensional display of a center depth plane z1 is realized, and z0 is not equal to z1. The method comprises three processes, namely, extraction of orthogonal parallax information, adjustment of parallax information and synthesis of the micro image array. Integral imaging three-dimensional display of different center depth planes can be realized without reshooting of three-dimensional scenes, so that the utilization rate of three-dimensional information is increased, and the shooting cost is saved.

The invention discloses a method and a system for extracting a two-dimensional electric construction drawing from a digitized three-dimensional model. The method for extracting the two-dimensional electric construction drawing from the digitized three-dimensional model comprises the following steps of: obtaining identifying information of electrical equipment quoted in the digitized three-dimensional model; filtering the electrical equipment in the digitized three-dimensional model when the identifying information of the electrical equipment is identical with that in a two-dimensional block database and obtaining a first two-dimensional graph according to the digitized three-dimensional model of the remaining portion; finding two-dimensional blocks corresponding to identifying information of the electrical equipment from the two-dimensional block database when the identifying information of the electrical equipment is identical with that in the two-dimensional block database to obtain a second two-dimensional graph; synthesizing the two-dimensional electric construction drawing according to the first two-dimensional graph and the second two-dimensional graph. According to the method and the system for extracting the two-dimensional electric construction drawing from the digitized three-dimensional model, the drawing efficiency and drawing depth can be effectively improved through the calling of drawing data of the database.