摘要:
A trace sampling detection system includes a gathering device configured to gather particles through a handle-bar, a gate and an air-stream gatherer. A collection tube is configured to deposit gathered particles from the gathering device onto a portion of a sample media. A carousel wheel that includes the sample media is configured to rotate the sample wheel such that the portion of the sample media including the gathered particles is presented to an exothermic decomposition detector that detects, through an infrared sensor, the decomposition of the gathered particles.
摘要:
A trace sampling detection system includes a gathering device configured to gather particles through a handle-bar, a gate and an air-stream gatherer. The handle-bar includes collection holes positioned to be adjacent to a user's hand when the user grips the handle-bar, and is configured to dislodge and capture particles from the user's hand when the user grips and moves the handle-bar. The gate includes a series of collection holes, is positioned to be adjacent to the user's clothing when the user traverses the gate, and is configured to dislodge and capture particles from the user's clothing in response to pressure applied from the user. The air-stream gatherer includes an outward vent and an in-drawing vent, and is positioned to enable objects, such as the user's feet, to be placed between the outward and in-drawing vents. The air stream is configured to dislodge and capture particles from objects, such as the user's feet, that block the air-stream between the vents. A collection tube is configured to deposit gathered particles from the gathering device onto a portion of a sample media. A carousel wheel that includes the sample media is configured to rotate the sample wheel such that the portion of the sample media including the gathered particles is presented to an exothermic decomposition detector that detects, through an infrared sensor, the decomposition of the gathered particles.
摘要:
Systems, methods and apparatus, including computer program products, implementing and using techniques for generating a composite image from both two-dimensional (2D) image layers and three-dimensional (3D) image layers. In one embodiment, the image layers are arranged in a sequence. The image layers are rendered according to the sequence to generate a composite image, the last image layer of the sequence to be rendered being a 2D image layer.
摘要:
A computer-implemented method includes identifying a intersection point on a first graphical object from an incident ray. The incident ray originates from an image viewpoint. The method also includes directing a compositing ray from the image viewpoint to the intersection point. Further, the method includes determining color information associated with the intersection point from color information provided by the compositing ray.
摘要:
A method to perform compositing of three-dimensional images includes, on a Central Processing Unit (CPU), automatically assembling a Graphics Processing Unit (GPU) program for each element of a plurality of image elements. The GPU program for each element is to apply at least one effect to the respective image element. The plurality of image elements, and the associated GPU programs, is communicated from the CPU to a GPU.
摘要:
The present disclosure relates to system, method and apparatus including a chemically impregnated media, a fixed, white broad spectrum LED source, a recording device having a digital imaging sensor and a microprocessor, is provided. The recording device captures real-time video images of color changes that occur on the chemically treated media during exposure to a gas specimen indicating a targeted substance is responding on the media. The continuous video images are transmitted to the microprocessor and evaluated with a proprietary algorithm loaded onto the microprocessor, which can efficiently determine gas concentration, as well as, individual species of target gas or gases landing on the specific chemically treated media. The captured video recording of the media color change provides a record of the events for later verification and evaluation of a particular gas detection event.
摘要:
Shadows from physical lights have a penumbra region, in which the light is only partially hidden from the shadow acceptor. The intensity of light in this region may be calculated using an approximation of the amount of light visible. For example a fragment or pixel shader program execution on a GPU may generate a shadow from a light source using the light intensities for each pixel being rendered. Per-pixel shadow density information may be projected from the shadow caster onto the shadow acceptor. A penumbra map may contain both depth information and light attenuation information for the shadow acceptor. This information may be blurred using a fragment or pixel shader on a GPU to determine an average shadow density for a pixel being rendered.
摘要:
A method includes identifying a plurality of image elements to be rendered within a three-dimensional image. The method also includes identifying a set of light sources according to which lighting and shadowing are to be computed within the three-dimensional image. For each image elements of the plurality of image elements, the method includes generating a shaded image element, wherein the generating of the shaded image element includes rendering the respective image element into a buffer for each light source of the set of light sources so as to accumulate lighting effects, particular to the image element, within the buffer as the shaded image element. For each image element of the plurality of image elements, the method includes rendering at least one effect with respect to the shaded image element to generate a modified image element.
摘要:
A method to perform compositing of three-dimensional images includes, on a Central Processing Unit (CPU), automatically assembling a Graphics Processing Unit (GPU) program for each element of a plurality of image elements. The GPU program for each element is to apply at least one effect to the respective image element, and to composite the respective image element according to a compositing mode specific to the respective image element. The plurality of image elements, and the associated GPU programs, is communicated from the CPU to a GPU. The plurality of image elements may be subject to a two-pass sort operation prior to the automatic assembly of the GPU programs.
摘要:
A method includes performing a first transform operation with respect to an image element to transform the image element from an object space, defined by an object coordinate system, to an intermediate space defined by an intermediate coordinate system. A first computational operation is performed with respect to the image element in the intermediate space. A second transform operation is performed with respect to the image element to transform the image element from the intermediate space to a world space, defined by a world coordinate system. A second computational operation is performed with respect to the image element in the world space.