471 results about "Shadowings" patented technology

One embodiment of the present invention includes techniques for pre-computing ambient shadowing parameters for a computer-generated scene. A processing unit retrieves a reference object associated with the computer-generated scene and comprising a plurality of vertices. For each vertex in the plurality of vertices, the processing unit computes a local ambient shadowing parameter, and stores the local ambient shadowing parameter in a memory. For each instance of the reference object included in the computer-generated scene, the processing unit computes a first global ambient shadowing parameter based on the position of the instance within the computer-generated scene, and stores the first global ambient shadowing parameter in the memory. One advantage of the disclosed embodiments is that ambient obscurance is applied to instance objects in a scene in real time while reducing memory space dedicated to storing the AO parameters.

In a method for forecasting shadowing of a photovoltaic (PV) system due to cloud formation or movement, part of the firmament is imaged with fisheye optics onto the input optics of a digital camera. Pixel groups associated with luminous intensity ranges are formed. The spatial arrangement of the groups is analyzed to forecast shadowing of a photovoltaic system. A line extending from the PV system to the sun is formed and is continuously tracked. A reference line located inside a region around the line is formed. Passage of clouds across a reference line is analyzed. The result of the analysis is used to increase the electric power from the PV system to a minimum value through supply of additional backup energy or to reduce the electric power consumption by disconnecting users to ensure that key users do not experience a drop in supplied power below a minimum value.

A method and apparatus for surface measurement using the shadow moire effect with the Talbot effect. The apparatus includes a specimen mount to receive a specimen having a surface to be measured, and a reference grating mounted adjacent to the specimen mount so as to be substantially parallel to a mean surface plane of the specimen. The reference grating is mounted in such a manner that the distance between the reference grating and the mean surface plane of the specimen can be adjusted to a Talbot distance deltaT. The apparatus also includes a light source to illuminate the specimen through the grating and a detector positioned to detect the moire fringes produced by the grating due to variation of the surface of the specimen.

A high efficiency, environmentally friendly system comprising a plurality of photovoltaic solar collecting panels (PV panels) is disclosed. The system comprises an outer frame to which a plurality of inner frames are mounted to which the plurality of PV panels are attached. To minimize shadowing by the outer frame upon one or more PV panels, at least one PV panel may extend beyond an endpoint of the main frame. The system also comprises an outer frame rotation actuator that rotates the outer frame and an inner frame rotation actuator that rotates the inner frames and the plurality of PV panels. The solar tracking array frames disclosed herein help to improve the quality of the environment by conserving a variety of energy resources (e.g., fossil fuels, hydroelectric energy, etc.) The solar tracking array frames disclosed herein also help to reduce greenhouse gas emissions, as solar tracking array frames do not produce carbon dioxide byproducts.

A system architecture for large concentrated solar power applications that increases heliostat utilization efficiency and land utilization efficiency is described. Embodiments of the invention include a large heliostat field in which are distributed a number of receiving locations, and wherein there is the assignment of heliostats to receiving locations is dynamic. Embodiments of the invention include dynamically targeting heliostats to receiving locations wherein the target determination process is performed frequently during operation and wherein such dynamic targeting can be utilized to various ends. Embodiments of the invention include configurations wherein cosine losses associated with heliostat pointing are significantly reduced, wherein heliostats may be closely packed without incurring substantial shadowing and blocking losses thereby significantly increasing land utilization, and wherein other benefits are realized.

Systems, methods, and computer program products that provide broadcast-quality photo-realistic rendering of one or more 3D objects added to a still frame (photo mode), or series of frames (movie mode). The basic steps performed during creation of an image include analysis of a 2D image frame during a set up sequence, adding a 3D object to the frame, and adding visual effects to the frame with little or no user intervention, the visual effects including but not limited to shadowing, reflection, refraction, and transparency.

A microcontroller comprising a central processing unit and a further fault processing unit suitable for performing validation of operations of said central processing unit. The further fault processing unit is external and different with respect to said central processing unit and said further fault processing unit comprises at least a module for performing validation of operations of said central processing unit and one or more modules suitable for performing validation of operations of other functional parts of said microcontroller. Validation of operations of said central processing unit is performed by using one or more of the following fault tolerance techniques: data shadowing; code&flow signature; data processing legality check; addressing legality check; ALU concurrent integrity checking; concurrent mode / interrupt check. The proposed microcontroller is particularly suitable for application in System On Chip (SoC) and was developed by paying specific attention to the possible use in automotive System On Chip. The invention also includes a method for designing and verify such fault-robust system on chip, and a fault-injection technique based on e-language.

A method for conveying and displaying a high-performance image in a standard web browser, via a pair of image data files in traditional formats which do not support such higher-performance individually, each downloaded by a web server in traditional manner and then re-combined via a software algorithm executed at the browser. Said high-performance features may include rendering the appearance of background transparency in and around opaque figures within the normal rectangular area of an image; variable semi-transparency; cropping (or retro-) transparency, and auto-shadowing of overlaid images.Additionally, exploiting the infrastructure of the invention thus described, further means by which a single image, embedded in a group of images co-located within a shared display region, can be easily designated by a simple pointing device such as a computer mouse, even though said single image may appear substantially obscured by other irregularly-shaped images in the region.

To provide a reflection-type mask having a reduced shadowing effect, capable of phase shift exposure and having a shading frame of sufficient shading performance. The mask includes a substrate 11, a multilayer reflective film 12 which is formed above the substrate 11, and which reflects exposure light, a first photoabsorber layer 15 which is formed above the multilayer reflective film 12, and which absorbs the exposure light, a circuit pattern region 16 constituted, in conformity with a predetermined circuit pattern, of an opening formed as a result of removal of the first photoabsorber layer 15 and an absorbing portion where the first photoabsorber layer remains, and a shading region 18 having a reflectance with respect to the exposure light lower than that in the absorbing portion of the circuit pattern region 16.

A system for forming composite video images from one or more foreground images and one or more background images. In one embodiment, s sum of a suppressed foreground image signal with weight α, with one or more selected foreground colors suppressed, and a background image signal with weight 1−α′ (0≦α′≦1) is formed, where a and α′ may vary from pixel to pixel and with time. In another embodiment, a shadow from a selected foreground image is impressed on selected pixels of a background image. In another embodiment, foreground suppression and shadowing are combined, optionally by retrofitting, using an existing α-mixer or a newly constructed α-mixer. Provision of a chroma key map allows a foreground image shadow to be prescribed pixel by pixel, including a transition region in which the shadowed image slowly disappears.

Methods and apparatus are provided for converting electromagnetic radiation, such as solar energy, into electric energy with increased efficiency when compared to conventional solar cells. A photovoltaic (PV) unit, according to embodiments of the invention, may have a very thin absorber layer produced by epitaxial lift-off (ELO), all electrical contacts positioned on the back side of the PV device to avoid shadowing, and / or front side and back side light trapping employing a diffuser and a reflector to increase absorption of the photons impinging on the front side of the PV unit. Several PV units may be combined into PV banks, and an array of PV banks may be connected to form a PV module with thin strips of metal or conductive polymer applied at low temperature. Such innovations may allow for greater efficiency and flexibility in PV devices when compared to conventional solar cells.

The Secure Networked Data Shadowing System is connected to a plurality of monitored computer systems via an existing communication medium to store the shadowed data. The data is encrypted by the monitored computer system using a cryptokey, and the data file is processed using a hash function prior to encryption, so the contents of this file are uniquely identified. Thus, the encrypted file is stored in its encrypted form and the hash index is used to identify the encrypted file. A “data de-duplication” process avoids storing multiple copies of the same files by identifying instances of duplication via the hash index. Files that have the same hash index can be reduced to a single copy without any loss of data as long as the file structure information for each instance of the file is maintained.

A method, computer program product and system for rendering soft shadows in an image or frame representing a 3D scene, comprising the steps, from a light's point of view, of detecting and creating a list of edges casting shadows, a list of soft shadow edges and a list of shadow volumes polygons; rendering said soft shadow edges into one or more sides of a cubemap, rendering said shadow volume polygons in combination with a stencil buffer to detect full shadowed areas; from a viewer's point of view rendering said scene with said cubemap applied while performing a stencil test operation for preventing the scene to be drawn in shadowed areas, to produce a soft shadowed image.In addition, the system supports the re-use of the shadow volumes and cubemap information for more than one frame.

In order to increase the recognition rate of a shadow area contained in the image of an aerial photograph, a central control portion performs the processes of: comparing a shadow-produced angle with the angles of segments constituting the polygons generated by a polygon-generating portion to judge whether or not there are the segments coinciding with the shadow-produced angle, of the segments constituting the polygon; judging whether or not the ratio of the length of the segment constituting the shadow to the length of the segment constituting the feature coincides with a shadow-extended ratio; judging whether or not the color tone of the area surrounded by the segments constituting the shadow is darker than that of all the adjacent polygons; and identifying the area surrounded by the segments constituting the shadow as “shadow area.” The polygon of the identified shadow area is generated.

An article with a surface that includes undercut grooves depending beneath the surface to a bottom portion, where the grooves have an upper width on the surface and a lower width on the bottom portion connected by side walls, and where at least one of said side walls connects the upper width to the lower width to form an undercut angle with the surface of less than 90°. The article is covered with a coating that contains weak paths for stress relief. The coating fills the undercut grooves and ranges above the surface with a thickness from about 0.1 to 50 mm.

A method for tracking solar panels includes the steps (a) beginning a tracking cycle substantially at sunrise with adjacent tilting panels all horizontal, (b) tilting the adjacent panels in unison in a first angular direction toward the rising sun at a tilt rate that just avoids shading of adjacent panels, (c) reversing direction of panel tilt at a point that the panels reach either a maximum tilt limited by mechanical design, or the panel surfaces are orthogonal to the rising sun, (d) tilting the adjacent panels in a second angular direction, following movement of the sun and keeping the surface of the panels at right angles to the sun's position, until a point is reached that shadowing is imminent from the angle of the setting sun, and (e) reversing direction of panel tilt again to the first angular direction, adjusting tilt as the sun sets to avoid shading until the panels are again horizontal.

The invention discloses a vehicle tracking method based on machine learning and optical flow. A vehicle model is obtained through one-off off-line training and used for detecting vehicle block mass Blobs in a video flow in real time, bidirectional pyramid optical flow tracking is performed on calculation characteristic point sets of all the vehicle mass block Blobs, and results of optical flow tracking in the forward direction and the backward direction are analyzed and filtered, so that multiple targets are stably and accurately tracked to form vehicle tracks. According to the complete vehicle tracking solution, the vehicle tracking method based on machine learning and optical flow can be widely applied to the fields of intelligent traffic, electronic polices, video monitoring, unmanned driving and others; by the utilization of the tracking method, a user can solve the classic problems in an existing tracking algorithm well, the multiple targets, such as long-period vehicle staying, size scale changing, shadowing, local shielding and touching, can be stably and accurately tracked; particularly, the vehicle tracking method has the good effects under the conditions of severe weather, a low illumination level and a high noisy point.

A microcontroller comprising a central processing unit and a further fault processing unit suitable for performing validation of operations of said central processing unit. The further fault processing unit is external and different with respect to said central processing unit and said further fault processing unit comprises at least a module for performing validation of operations of said central processing unit and one or more modules suitable for performing validation of operations of other functional parts of said microcontroller. Validation of operations of said central processing unit is performed by using one or more of the following fault tolerance techniques: data shadowing; code&flow signature; data processing legality check; addressing legality check; ALU concurrent integrity checking; concurrent mode / interrupt check. The proposed microcontroller is particularly suitable for application in System On Chip (SoC) and was developed by paying specific attention to the possible use in automotive System On Chip. The invention also includes a method for designing and verify such fault-robust system on chip, and a fault-injection technique based on e-language.

A method and system for automatically maintaining data consistency across two or more hierarchically arranged databases is disclosed. A master list and an environmental variable file are created for use in maintaining the data consistency of a cell view. A cell view in a selected database is then checked to see if it has been modified by performing date-time stamp shadowing. If the cell view is modified, the cell view is then retrieved by derivative lists created from the master list and the environmental variable file and translated based on criteria from the environmental variable file. Verification is then performed on the translated cell view once again based on criteria from the environmental variable file. This verification creates a signature for the translated cell view. Signatures are then checked for being out of date with respect to any dependency listing contained internally. Any signature found to be out of date triggers an automatic re-verification of the pertinent data file. The translated and verified cell view is then checked to see if it or any of its dependencies have been altered by performing an audit based on criteria from the environmental variable file using the signature. The translated and verified cell view is then promoted to a higher quality database based on the results of the audit.

The present invention relates to receivers, and, more particularly, to improved diversity receivers.In some environments, such as those subject to multipath reflection or shadowing, some carriers may be received with low power. In these cases, diversity receivers may provide an improvement of around 3 dB to 6 dB, the latter figure referring to cases where the communication channel is under severe multipath fading and in mobile reception. A diversity receiver effectively comprises two or more separate receivers, or diversity branches, each with its own antenna. Each set of received carriers from each diversity branch is then combined.The present invention provides an improved method and apparatus for receiving multi-carrier signals.

Methods and apparatus are provided for converting electromagnetic radiation, such as solar energy, into electric energy with increased efficiency when compared to conventional solar cells. A photovoltaic (PV) unit may have all electrical contacts positioned on the back side of the PV device to avoid shadowing and increase absorption of the photons impinging on the front side of the PV unit. Several PV units may be combined into PV banks, and an array of PV banks may be connected to form a PV module with thin strips of metal or conductive polymer formed at low temperature. Such innovations may allow for greater efficiency and flexibility in PV devices when compared to conventional solar cells.

A high efficiency, environmentally friendly system comprising a plurality of photovoltaic solar collecting panels (PV panels) is disclosed. The system comprises an outer frame to which a plurality of inner frames are mounted to which the plurality of PV panels are attached. To minimize shadowing by the outer frame upon one or more PV panels, at least one PV panel may extend beyond an endpoint of the main frame. The system also comprises an outer frame rotation actuator that rotates the outer frame and an inner frame rotation actuator that rotates the inner frames and the plurality of PV panels. The solar tracking array frames disclosed herein help to improve the quality of the environment by conserving a variety of energy resources (e.g., fossil fuels, hydroelectric energy, etc.) The solar tracking array frames disclosed herein also help to reduce greenhouse gas emissions, as solar tracking array frames do not produce carbon dioxide byproducts.

The invention discloses a method for detecting, tracking and identifying an object abandoning / stealing event, which comprises the following steps of: 1) the detection of a moving object, namely, establishing an adaptive background model, extracting the moving object by utilizing a background difference and performing morphological processing and shadow processing to obtain a more complete and more accurate state of the moving object; 2) the tracking of the moving object, namely, realizing the inter-frame matching of the moving object through a recursion process of estimating, observing and correcting the state of the moving object, and tracking a moving track of the moving object; and 3) event identification, namely, giving a clear definition to the object abandoning / stealing event, judging the occurrence of the event according to the characteristics and the moving track of the moving object, if the event occurs, distinguishing an object abandoning event from an object stealing event, capturing evidence pictures for the identified abandoning and stealing events and giving an audible alarm.

Systems, methods, and computer program products that provide broadcast-quality photo-realistic rendering of one or more 3D objects added to a still frame (photo mode), or series of frames (movie mode). The basic steps performed during creation of an image include analysis of a 2D image frame during a set up sequence, adding a 3D object to the frame, and adding visual effects to the frame with little or no user intervention, the visual effects including but not limited to shadowing, reflection, refraction, and transparency.

A segmentation operation is applied to an input image to identify foreground objects of interest, and then a shadow removal operation is applied to remove any detected shadows from the foreground segmentation. The shadow removal algorithms can leave holes and bisections in the segmentation map, however, which will then subsequently impact on an object detection step performed using connected component analysis. To get around this problem, a conditional morphological dilation operation is applied to the segmentation map to ‘grow’ the segmented blobs to fill in any holes and bisections, without re-growing shadow pixels in the segmentation. The result is an object detection method and system which is robust to illumination changes causing shadows and / or highlights.