111 results about "Second ray" patented technology

An original mesh is provided with a bounding surface and a convex hull surface. A first tessellation links the convex hull to the original mesh, and a second tessellation links the bounding surface to the convex hull. Using the tessellations to find a first intersection between a ray and the original mesh by finding a first intersected polygon of the bounding surface, and then traversing adjacent intersected polygons starting from the first intersection until the intersection is found. When the ray is moved, a second ray-surface intersection can be found by finding a polygon locally near the first intersection and containing a first intersection with the moved ray, traversing out from the local polygon through adjacent polygons intersected by the moved ray, and determining whether traversed polygons are unoccluded based on whether they are part of the convex hull surface.

A method for creating a 360 degree panoramic image from multiple images includes (1) computing a gross rotation error ΔR between a first image and a calculated first image rotated to be stitched to a last image, and (2) spreading the gross rotation error ΔR to each pixel on the panoramic image. Spreading the gross rotation error ΔR includes (1) computing a rotation angle θ0 and rotational axis n0 from the gross rotational error ΔR, (2) determining an angle α of each pixel, and (3) determining a compensation matrix Rc for each pixel using the following formula: Rc(α)=R(α / 2πθ0). Spreading the gross rotation error ΔR further includes (4) tracing a pixel on the panoramic image to a camera optical center of the images to form a first ray, (5) determining a second ray originating from the camera optical center that would be rotated by the compensation matrix Rc to coincide with the first ray, (6) tracing the second ray to a second pixel on one of the images, and (7) painting the first pixel with color values of the second pixel.

A flash lamp exposure system for exposing a substrate to ultraviolet radiation. The system includes at least one flash lamp, each of which includes: at least one lamp for emitting ultraviolet radiation in response to a voltage; at least one first reflector, each first reflector being adapted to reflect the ultraviolet radiation toward the substrate; a second reflector surrounding a path of the ultraviolet radiation from the at least one lamp to the substrate, the second reflector being adapted to reflect first rays of the ultraviolet radiation toward the substrate; and a third reflector disposed closer to the substrate than the secondary reflector and surrounding the path of the ultraviolet radiation from the at least one lamp to the substrate, the third reflector being adapted to reflect second rays of the ultraviolet radiation toward the substrate.

Disclosed is a detector array comprising a first linear array for detecting a first ray and a second ray which penetrate through a first plurality of parts of the inspected object to acquire first values and second values for the first plurality of parts, wherein the second ray is alternately emitted with the first ray; and a second linear array arranged parallel to the first linear array for detecting the first ray and the second ray which penetrate through a second plurality of parts of the inspected object to acquire third values and fourth values for the second plurality of parts, wherein the first plurality of parts is partly identical to the second plurality of parts. With the detector array, the efficiency and material discrimination accuracy can be improved in the scanning inspection of the inspected object by use of alternate dual-energy rays.

The invention discloses a three-dimensional real scene modeling system based on aviation oblique photograph measurement. The using method of the system comprises the steps of estimating the elevation range of a target, conducting aviation oblique photographing on the target, and recording the elements of exterior orientation and elements of interior orientation, corresponding to a camera, of all photos; taking a pixel point a in a photo A, finding a first ray, and cutting out the segment, within the range between h1 and h2, of the first ray, namely a first spatial segment; taking a photo B, projecting the first spatial segment on the photo B, obtaining a first epipolar ray, and finding a homonymy pixel point b; connecting the homonymy pixel point b with the center point of the camera when the camera is used for photographing the photo B, and extending the connecting line towards the target point to form a second ray, wherein the point of intersection of the first ray and the second ray is the three-dimensional space coordinate point of the pixel point a. The scheme effectively achieves three-dimensional real scene modeling and simulation and fills the blank in the field. Three-dimensional digital city and urban residences are obtained quickly, and the problem that a real-time three-dimensional model is hard to obtain currently is solved.

An original mesh is provided with a bounding surface and a convex hull surface. A first tessellation links the convex hull to the original mesh, and a second tessellation links the bounding surface to the convex hull. Using the tessellations to find a first intersection between a ray and the original mesh by finding a first intersected polygon of the bounding surface, and then traversing adjacent intersected polygons starting from the first intersection until the intersection is found. When the ray is moved, a second ray-surface intersection can be found by finding a polygon locally near the first intersection and containing a first intersection with the moved ray, traversing out from the local polygon through adjacent polygons intersected by the moved ray, and determining whether traversed polygons are unoccluded based on whether they are part of the convex hull surface.

A pixel processing element (PPE)-based ray tracing device, includes an internal shared memory for receiving and storing image data to be rendered; a PPE processor for performing parallel ray tracing on the image data on a pixel-by-pixel basis; and a shading processor for accumulatively calculating color values of respective pixels obtained by ray tracing and determining a final color value of each pixel. Further, A PPE-based ray tracing method, includes receiving image data to be rendered on a frame-by-frame basis; storing data having a high frequency of use among the input data in a hierarchical cache; performing parallel ray tracing on image data of each pixel stored in the hierarchical cache on a frame-by-frame basis; calculating a color value of each pixel from first and second rays and a direct ray in accordance with the ray tracing result, and accumulating the color values to obtain the color value of each pixel.

An apparatus for identifying a fake face is provided. A first eye image acquirer acquires a first eye image by taking a picture of a subject while radiating a first ray having a first wavelength. A second eye image acquirer acquires a second eye image by taking a picture of the subject while radiating a second ray having a second wavelength that is shorter than the first wavelength. A controller extracts a first area and a second area having brighter lightness than the first area from each of the first and second eye images, calculates a lightness of the first area and a lightness of the second area in the first eye image, and a lightness of the first area and a lightness of the second area in the second eye image, and determines whether the subject uses a fake face based on the calculated lightness.

The invention provides a ray elastic parameter inversion method which comprises the following steps of: acquiring logging information of a logging record, and determining the ray elastic impedance REI according to the logging information; arousing and recording seismic waves, carrying out amplitude holding treatment on recorded seismic information, and forming first angle superposition data and second angle superposition data; respectively carrying out ray elastic impedance inversion on the first angle superposition data and the second angle superposition data by taking the ray elastic impedance REI as a low frequency constraint to obtain a first ray invertomer and a second ray invertomer; calculating the longitudinal-transversal wave velocity ratio, the longitudinal wave impedance and the transversal wave impedance; and analyzing the seismic attribute which is closely related to the reservoir lithology change and pore fluid components by utilizing the longitudinal-transversal wave velocity ratio, the longitudinal wave impedance and the transversal wave impedance. The invention can obtain more reliable longitudinal-transversal wave velocity ratio by calculating the longitudinal-transversal wave velocity ratio according to the first ray invertomer and the second ray invertomer.

An imaging system and method for dual polarization imaging is provided. In one implementation, an imaging system includes a field stop located at a first image plane for limiting an incident light ray bundle passing through an aperture thereof and a polarization discriminating element adapted to separate the incident light ray bundle into a first ray bundle having a first polarization traveling in a first direction and a second ray bundle having a second polarization traveling in a second direction. The system also includes an image detector located at a second image plane to receive the first and second ray bundles such that the first ray bundle forms a first image at a first region of the image detector and the second ray bundle forming a second image at a second region the image detector, the first and second images laterally displaced from each other at the second image plane.

A first linearly polarized bundle of rays of incident rays is converted by optical modulation with an input video signal into a second linearly polarized bundle of rays orthogonal to the first rays in polarization. The first rays pass through a polarizer before optically modulated. A second linearly polarized bundle of rays originally involved in the incident rays is reflected by the polarizer in a first direction. The second rays obtained by the optical modulation are reflected by the polarizer in a second direction. The second rays reflected in the second direction pass through another polarizer. A first linearly polarized bundle of rays involved in the reflected second rays is reflected by the other polarizer. The reflected first rays is detected by an optical sensor that is positioned outside an optical path of the second rays originally involved in the incident rays and reflected in the first direction.

Disclosed is a non-contact type of thickness-measuring device for determining the thickness of a workpiece to be machined. It comprises: a laser light projecting means for projecting a ray of laser light to the top surface of the workpiece at a predetermined angle of incidence relative to the top surface of the workpiece; an imaging means for capturing the first ray of laser light reflected from the top surface of the workpiece and the second ray of laser light passing through the workpiece and reflecting from the bottom surface of the workpiece; and an arithmetic means for determining the thickness of the workpiece from the distance between the first point at which the first ray of laser light falls on the imaging means and the second point at which the second ray of laser light falls on the imaging means.

Disclosed are an energy spectrum modulation apparatus, a material discrimination method and a device thereof, as well as an image processing method are disclosed, which can discriminate the material in large- and medium-sized objects such as cargo containers, air cargo containers, etc. by using X-rays having different energy levels. The energy spectrum modulation apparatus comprises a first energy spectrum modulation part for modulating a first ray having a first energy spectrum, and a second energy spectrum modulation part coupled to the first energy spectrum modulation part and for modulating a second ray having a second energy spectrum different from the first energy spectrum. The present invention can be used in the non-opening inspection for large-sized container cargo at places such as Customs, ports and airports.

Retroreflecting elements adapted for use in two-by-two optical routing elements. Each retroreflecting element is configured to selectively retroreflect two optical rays. A first reflective surface, such as may be provided by a mirror, is inclined with respect to a reference plane. A second reflective surface, such as may also be provided by a mirror, is opposed to and inclined with respect to the first reflective surface. The two surfaces are configured for rotation about an axis to multiple positions such that in a first position, a first ray is retroreflected along a first path and second ray is reflected along a second path, and in a second position, the first ray is reflected along the second path and the second ray is reflected along the first path.

A method for measuring local temperature in human body or animal body includes emitting the first ultrasonic ray on measured region of temperature T, receiving reflected echo for obtaining the first parameter, changing temperature at measured region to be T+delta T and emitting the second ray for obtaining the second parameter, solving out measuring ratio and theoretical ratio of the two parameters, optimizing deviation between the two ratios for reverting out local temperature increment delta T of measured region.

Disclosed are an energy spectrum modulation apparatus, a material discrimination method and a device thereof, as well as an image processing method are disclosed, which can discriminate the material in large- and medium-sized objects such as cargo containers, air cargo containers, etc. by using X-rays having different energy levels. The energy spectrum modulation apparatus comprises a first energy spectrum modulation part for modulating a first ray having a first energy spectrum, and a second energy spectrum modulation part coupled to the first energy spectrum modulation part and for modulating a second ray having a second energy spectrum different from the first energy spectrum. The present invention can be used in the non-opening inspection for large-sized container cargo at places such as Customs, ports and airports.

The present invention relates to a CT imaging system comprising a second ray tube / detector and a method thereof. The CT imaging system (10) includes a rotatable gantry (12) having an opening (48) to receive an object (22) to be scanned, a first x-ray emission source (90, 190) attached to the rotatable gantry (12) and configured to emit x-rays toward the object (22), and a second x-ray emission source (92, 192) attached to the rotatable gantry (12) and configured to emit x-rays toward the object (22). A first detector (100, 200) is configured to receive x-rays that emit from the first x-ray emission source (90, 190), and a second detector (106, 206) configured to receive x-rays that emit from the second x-ray emission source (92, 192). A first portion of the first detector (100, 200) is configured to operate in an integration mode and a first portion of the second detector (106, 220) is configured to operate in at least a photon-counting mode.

A system and methods for volume rendering using n-pass sampling are disclosed. A plurality of first rays in a first density is sampled through a volume. Each of the first rays is in a separate section. A value of at least one first ray is compared to a first threshold. A plurality of second rays in a second density is sampled based on the comparison of the at least one first ray. The second rays are in a first section of the separate sections. The first section being for the at least one first ray. A value of at least one second ray is compared to a second threshold. A plurality of third rays is sampled in a second section spatially different than the first section based on the comparison of the at least one second ray. An image rendered from the sampling of at least the first rays is displayed.

An apparatus for identifying a fake face is provided. A first eye image acquirer acquires a first eye image by taking a picture of a subject while radiating a first ray having a first wavelength. A second eye image acquirer acquires a second eye image by taking a picture of the subject while radiating a second ray having a second wavelength that is shorter than the first wavelength. A controller extracts a first area and a second area having brighter lightness than the first area from each of the first and second eye images, calculates a lightness of the first area and a lightness of the second area in the first eye image, and a lightness of the first area and a lightness of the second area in the second eye image, and determines whether the subject uses a fake face based on the calculated lightness.

The invention discloses a display panel. The display panel includes a liquid crystal layer, a first base board and a second base board. The liquid crystal layer is arranged between the first base board and the second base board. A first photic zone, a first shading zone and a second photic zone are successively connected to the first base board. A third photic zone, a second shading zone and a fourth photic zone are sequentially connected to the second base board. The projection area of the first shading zone on the second base board covers the second shading zone. The first shading zone is used for resisting a first ray projecting to the second photic zone when the first ray projects to the first photic zone. The second shading zone is used for resisting a second ray projecting to the fourth photic zone when the second ray projects to the third photic zone. The invention further provides a display device. By the adoption of the display panel and the display device, the problem of ray crosstalk in a sub-pixel area of a color filter layer is solved.

A detector array consists of the first linear-array detector used to detect the first ray penetrating at least part of detected object, the second linear-array detector set in parallel to the first one and used to detect the second ray being emitted alternatively to the first one and being used to penetrate at least part of detected object.

A projecting device includes a first projective optical system forming an intermediate image having trapezoidal distortion from light emitted by a display unit displaying a rectangular image, a second projective optical system projecting the light from the intermediate image obliquely onto a screen so that an enlarged image in which the trapezoidal distortion has been corrected will be projected on the screen, and an intermediate optical system leading the light to combine the two projective optical systems. The second projective optical system includes at least one lens having a surface on which first and second ray bundles emitted from both ends of the image displayed by the display unit in regard to a short side direction of the image are totally separate from each other. A prescribed lens included in the at least one lens is configured so that gradients and curvatures at particular positions will satisfy prescribed conditions.

The invention provides a display panel. The display panel includes a backlight source, a color filter layer and a blue filtermenbrane which are sequentially arranged in a stacked mode. The color filter layer includes a blue pixel area, the blue pixel area includes a first sub-pixel area and a second sub-pixel area, the blue filter membrane is provided with a first light filtering area and a second light filtering area, the first filtering area is arranged opposite to the first sub-pixel area, and the second filtering area is arranged opposite to the second sub-pixel area. A ray radiated by the backlight source penetrates through the first sub-pixel area and the first light filtering area and becomes a first ray, a ray radiated by the backlight source penetrates through the second sub-pixel area and the second light filtering area and becomes a second ray, and the light intensity of the first ray is different from that of the second ray. The invention further provides a mobile terminal. The display panel and the mobile terminal solve the problem of visual-angle color errors occurring in the blue pixel area.

An imaging system and method for dual polarization imaging is provided. In one implementation, an imaging system includes a field stop located at a first image plane for limiting an incident light ray bundle passing through an aperture thereof and a polarization discriminating element adapted to separate the incident light ray bundle into a first ray bundle having a first polarization traveling in a first direction and a second ray bundle having a second polarization traveling in a second direction. The system also includes an image detector located at a second image plane to receive the first and second ray bundles such that the first ray bundle forms a first image at a first region of the image detector and the second ray bundle forming a second image at a second region the image detector, the first and second images laterally displaced from each other at the second image plane.

An optical scanner includes a light source, a deflector and a scanning optical system. The scanning optical system includes a first optical system including at least one resin scanning lens, and a second optical system between the target surface and one resin scanning lens. The second optical system includes at least one of a folding mirror(s) and a glass sheet(s), wherein m1+g2=m2+g1 is satisfied wherein m1 and g1 are respectively number of the folding mirror(s) and number of the glass sheet(s) to which the first ray has a shorter optical path than the second ray does, m2 and g2 are respectively number of the folding mirror(s) and number of the glass sheet(s) to which the first ray has a longer optical path than the second ray does.

The invention relates to a bireflection light emitting diode, which comprises a P electrode, a current expansion layer, a P type layer and an active layer, wherein the P electrode, the current expansion layer, the P type layer and the active layer are successively arranged from top to bottom, and a first ray reflection surface and a second ray reflection surface are respectively arranged on different heights between the lower surface of the P electrode and the upper surface of the active layer. According to the bireflection light emitting diode disclosed by the invention, light is continuously reflected and scattered between the two reflection surfaces so as to increase the luminous efficiency of the light emitting diode.

The embodiment of the invention provides a method for authenticating the user identity and a mobile terminal. The method comprises: determining an authentication mode and an authentication sequence ofthe user identity authentication, wherein the authentication mode comprises at least one of iris identity authentication and face identity authentication; when performing the iris identification authentication according to the authentication sequence, driving the first light supplementary lamp to emit a first ray, calling the first camera to collect first image data under the first ray, and performing iris identification according to the first image data; when the face authentication is performed according to the authentication sequence, driving the second light supplementary lamp to emit a second ray, calling the second camera to collect second image data under the second light, and performing face recognition according to the second image data. Iris recognition and face recognition canbe realized at the same time, which increases the diversity of user authentication and gives consideration to efficiency and security.

The invention discloses a capturing method used by an automobile data recorder. The capturing method comprises the following steps: detecting ambient light in real time by an ambient light sensor to obtain first light data; detecting the ambient light by the ambient light sensor when an object gets close, so as to obtaining second ray data; calculating a change value of the first ray data and thesecond ray data by a processor; determining whether the change value is greater than a preset value; and if the change value is greater than the preset value, performing capturing operation by cameraequipment in the automobile data recorder. The capturing method has the advantages that the non-contact gesture capture is realized by the light change detection; by setting judgement parameters of the automobile data recorder and the definition and duration of videos, the memory space occupancy rate is low, and effective evidence can be provided during traffic accidents; by setting the judgment parameters and picture clarity of the automobile data recorder, people can take pictures of beautiful scenery on highways, and the user experience is enhanced.