Diggins
David Diggins, South Australia AU
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20090189303 | METHODS FOR FORMING COATED HIGH INDEX OPTICAL ELEMENTS - Disclosed is a method of forming a coated optical element. The method includes providing a mould assembly having opposed mould sections and applying a UV-curable hard coat monomer composition to the casting face of at least one of the mould sections to form a hard coat monomer layer. The hard coat layer is irradiated with UV radiation under conditions to form a partially cured hard coat layer. The assembled mould is filled with a high index optical element precursor material the optical element precursor material and the partially cured hard coat layer are cured to form a high index optical element having a hard coat. | 07-30-2009 |
David Diggins, Flagstaff Hill AU
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20120115991 | COMPOSITION FOR MANUFACTURING A SCRATCH-PROOF COATING WITH IMPROVED RESISTANCE TO BASES - A coating forming composition that includes: | 05-10-2012 |
David A. Diggins, Chicago, IL US
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20150047738 | SYSTEM AND METHOD OF AUTOMATICALLY ENDING THE FILLING OF A GAS TRANSPORT MODULE OR OTHER GAS TRANSPORT - Processes and systems are described, which provide important advantages in filling gas storage vessels, such as gas cylinders for the transport of compressed natural gas (CNG). For example, the flow of gas from the fill station may be terminated safely, using an auto-fill shut-off mechanism, without the risk of exceeding vessel pressure ratings and overall reduced risk of operator error. The automatic termination of flow can occur at a preselected pressure that may, for example, be set at a fixed value, or may otherwise be adjusted based on the local temperature at the time of the fill. | 02-19-2015 |
David Robert Diggins, South Australia AU
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20080311404 | Coatings for Optical Elements - The invention provides an abrasion resistant coating composition for an optical element. The composition includes a polymerisable epoxy monomer having an average of at least two epoxy groups in the monomer molecule. The composition is capable of forming an abrasion resistant coating on an optical element after ionic polymerisation. The coating composition may also include an ionically polymerisable alkene monomer having an average of at least two polymerisable double bonds in the molecule. | 12-18-2008 |
David Robert Diggins, Flagstaff Hill AU
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20090026638 | METHOD OF FORMING A COATED OPTICAL ELEMENT - A method of forming a coated optical element is disclosed herein. The method uses a mould having first and second mould sections that will form front and back surfaces of the optical element, one of the mould sections having a casting face. The method includes the steps of: applying an abrasion resistant coating layer to the casting face of a mould section, the casting face being capable of imparting a desired optical configuration on a surface of the optical element; treating the abrasion resistant coating layer to prevent damage to the layer during subsequent steps; applying a second coating layer to the abrasion resistant coating layer to substantially cover the abrasion resistant coating layer; treating the second coating layer to provide at least weak adhesion of the second coating layer to the abrasion resistant coating layer and to prevent damage to the second layer during subsequent steps; filling the mould with an organic liquid material; and hardening the organic liquid material so as to form the optical element adhered to the second coating layer. | 01-29-2009 |
Joe Diggins, Buckinghamshire GB
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20120062699 | DETECTING STEREOSCOPIC IMAGES - To detect the presence of the two constituent images of a stereoscopic image within an image frame, a row of vertically-averaged pixels is derived from the upper half of the frame and compared with a second row of vertically-averaged pixels derived from the lower half of the frame. Similarly, a column of horizontally-averaged pixels is derived from the left half of the frame and compared with a column of horizontally-averaged pixels derived from the right half of the frame. | 03-15-2012 |
Joe Diggins, Chesham GB
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20120268653 | CHANGING THE TEMPORAL SAMPLE RATE OF A MOTION-IMAGE SEQUENCE - A frame-rate conversion system having an interpolation mode and a synchronisation mode. The synchronisation mode is selected when temporal interpolation confidence is and images can be retimed without dropping or repeating of images. The interpolation mode is selected when the measure of temporal interpolation confidence is high or repeating of images. Images are exchanged between a temporal interpolator and a buffer at an exchange rate which is varied in the interpolation mode to optimise the buffer occupancy for retiming of images without dropping or repeating of images in s subsequent synchronisation. | 10-25-2012 |
Jonathan Diggins, Eastleigh Hampshire GB
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20110026763 | AUDIO VISUAL SIGNATURE, METHOD OF DERIVING A SIGNATURE, AND METHOD OF COMPARING AUDIO-VISUAL DATA - The invention relates to the analysis of characteristics of audio and/or video signalsforthe generation of audio-visual content signatures.To determine an audio signature a region of interest for example of high entropy —is identified in audio signature data. This region of interest is then provided as anaudio signaturewith offset information. A video signature is also provided. | 02-03-2011 |
Jonathan Diggins, Hampshire GB
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20090034876 | IMAGE ANALYSIS - The present invention relates to a method of and apparatus for image analysis and in particular may relate to the detection of cross-fades in film or video sequences. The invention relates in particular to a method of analysing an image of a sequence of images to determine a cross-fade measure based on determined temporal picture information transitions associated with picture elements of the image. In particular, the cross-fade measure may be determined based on the extent to which the temporal picture information transitions are uniform. The method and apparatus of the invention can provide a measure of likelihood of a cross-fade in a single pass. In addition the described method can be accomplished in real-time or close to real-time. In addition the cross-fade detection results are comparable with, or better than, the results achieved by the prior art methods. | 02-05-2009 |
20090103812 | IMAGE ANALYSIS - This invention concerns image analysis of video signals or data in order to detect prior, block-based processing, and to quantify block-related picture impairments. Adjacent samples of video data are high pass-filtered, rectified and auto-correlated to form an auto-correlation function. The auto-correlation function may be analysed to provide information regarding block size and other block artefact measures. | 04-23-2009 |
20100045693 | PICTURE ATTRIBUTE ALLOCATION - The invention concerns image processing and, in particular, the processing of picture attribute fields for an image. A method of obtaining a new picture attribute field of an image is disclosed in which a picture attribute value at one position is allocated to a new position in the image in dependence upon the value of a parameter, such as luminance data, at the original position and at the new position and/or in dependence on the distance between the original position and the new position. The invention may be used to process picture attribute fields comprising: motion vectors; motion vector confidence; segment labels; depth labels; texture labels. | 02-25-2010 |
20100225823 | REGIONAL FILM CADENCE DETECTION - The temporal sampling pattern of a sequence of images that represents a moving scene is classified into classes of temporal sampling patterns including “film”, “video” and “still”. Pixels in each image in the said sequence are classified according to the relationship between signed inter-image pixel-value differences f | 09-09-2010 |
20100303357 | DETERMINING A REGIONAL SHOT-CHANGE PARAMETER - To determine a regional shot-change parameter for an image identified as a whole as a shot change image, a difference is taken between each pixel in that image and a spatially equivalent pixel in an adjacent image in the sequence. A pixel is flagged as a shot-change pixel when the difference for that pixel and around three of the spatially adjacent pixels exceed a threshold. If a pixel is spatially isolated from other shot-change pixels, it is not regarded as a shot-change pixel. | 12-02-2010 |
Jonathan Diggins, Buckinghamshire GB
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20110268179 | MOTION ESTIMATION WITH VARIABLE SPATIAL RESOLUTION - A motion estimator has a spatial sub-sampler to receive input images; at least one motion estimator determining motion vectors between input images and sub-sampled motion vectors between sub-sampled images; an up-sampler for up-sampling the sub-sampled motion vectors; and a selector for providing a motion vector output by selecting between the motion vectors and the (up-sampled) sub-sampled motion vectors, according to motion vector confidence. | 11-03-2011 |
20120287236 | VIDEO PROCESSING METHOD AND APPARATUS FOR USE WITH A SEQUENCE OF STEREOSCOPIC IMAGES - To generate a warning that a stereoscopic image sequence has been synthesised from a 2D image sequence, a video processor correlates left-eye image data and right-eye image data to identify any sustained temporal offset between the left-eye and right-eye image data. A measure of sustained correlation between a measured spatial distribution of horizontal disparity and a spatial model can also be used to generate the warning. | 11-15-2012 |
20120294486 | DETECTING STEREOSCOPIC IMAGES - To detect the presence of the left and right constituent images of a stereoscopic image packed within an image frame or within a sequence of image frames, images are unpacked according to each one of said known formats; a candidate measure is formed according to each unpacking and the candidate measures are compared to identify the presence of left and right images packed according to an identified format. The candidate measure may be a low pass filtered measure of the difference between the left and right images and may be a high pass filtered measure of the activity in either the left or the right image. | 11-22-2012 |
20130223729 | IDENTIFYING POINTS OF INTEREST IN AN IMAGE - Points of interest are identified in an image to characterise that image by dividing the image tiles, each tile including adjacent pixels. The position of a pixel with an extremum value is determined or located within each tile and that extremal value is ascribed to the tile. A tile with an extremal value which is more extreme than that of all adjacent tiles is identified; and the position within the image of the pixel with the extremum value in that identified tile is selected as the point of interest. | 08-29-2013 |
Jonathan Diggins, Chesham GB
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20120155548 | METHOD AND APPARATUS FOR ANALYSING IMAGE DATA TO QUANTIFY PRIOR BLOCKBASED PROCESSING OF THE DATA - A method of analysing image data to quantify prior block-based processing comprises processing a set of pixel values derived from the image data to generate a spatial difference profile along a line perpendicular to assumed block edges, the spatial difference profile representing differences between values of pixels spaced spatially in a direction parallel to said line; summing the spatial difference profile in a direction perpendicular to that line; measuring inter-maxima distances in the spatial difference profile to a fractional precision in pixel spacing units; and aggregating measured inter-maxima distances to determine a block size. | 06-21-2012 |
20130114906 | DETECTING IMAGE IMPAIRMENTS IN AN INTERPOLATED IMAGE - Some aspects include a method and apparatus for detecting image impairments caused by interpolation in an output image interpolated from two or more input images. The method comprises applying a substantially shift invariant transform to the interpolated image and to at least one of the input or adjacent images to derive a transformed image representation for each image. The transformed image representations of the interpolated image and the at least one adjacent image are then compared and differences between the transformed image representations indicative of image impairments in the output image caused by interpolation are determined based on the results of the comparison. | 05-09-2013 |
20140063031 | PIXEL BUFFERING - In an example method and system, image data to an image processing module. Image data is read from memory into a down-scaler, which down-scales the image data to a first resolution, which is stored in a first buffer. A region of image data which the image processing module will request is predicted, and image data corresponding to at least part of the predicted region of image data is stored in a first buffer, in a second resolution, higher than the first. When a request for image data is received, it is then determined whether image data corresponding to the requested image data is in the second buffer, and if so, then image data is provided to the image processing module from the second buffer. If not, then image data from the first buffer is up-scaled, and the up-scaled image data is provided to the image processing module. | 03-06-2014 |
20140200885 | AUDIO VISUAL SIGNATURE, METHOD OF DERIVING A SIGNATURE, AND METHOD OF COMPARING AUDIO-VISUAL DATA BACKGROUND - The invention relates to the analysis of characteristics of audio and/or video signals for the generation of audio-visual content signatures. To determine an audio signature a region of interest for example of high entropy—is identified in audio signature data. This region of interest is then provided as an audio signature with offset information. A video signature is also provided. | 07-17-2014 |
20140212066 | PIXEL CLUSTERING - A technique is described for combining several image sources into a single output image or video sequence. For a given pixel of the output image, pixel values are received from the image sources, and a matrix of distance measures between the pixel values (e.g. based on their colours) is computed. Clusters of pixel values are formed using the distance measures, and a score determined for each. One of the clusters is selected according to the scores, and used to derive an output pixel value. In an example, the clusters are formed using an iterative process where the closest pairs of pixel values or clusters are merged to form new clusters up to a size threshold. Examples are described for scoring the clusters based on model-based weighting or cluster size. Examples are also described for a rule-based cluster selection system. A composite image generator implementing the technique is also described. | 07-31-2014 |
20140369621 | ENCODING AN IMAGE - An image processor comprises an image pre-processing block and an encoder processing block for processing and encoding an image. The image pre-processing block receives image data and processes it to provide an image comprising image sections which each comprise pixels. For each of the image sections, the pixels are analysed to estimate an indication of the complexity of the image section, and metadata is determined based on the estimated complexity indications of the image sections. The metadata is passed to the encoder processing block which uses it to determine a quantization level for use in encoding the image. The encoder processing block can then encode the image using the determined quantization level. Conveniently, the image pre-processing block | 12-18-2014 |
20150023411 | ENCODING AN IMAGE - A quantization level is determined for use by an encoder in encoding an image in accordance with a target number of bits. For each section of the image, the pixels are analysed to estimate the complexity of the image section. For each of a plurality of candidate quantization levels, a relationship and the estimated complexity of the image sections are used to estimate the number of bits that would be generated by encoding the image with the encoder using the respective candidate quantization level, and based thereon one of the candidate quantization levels is selected. The relationship is a function of the quantization level used by the encoder, and is for use in relating the complexity of an image section to the number of bits that would be generated by encoding that image section with the encoder. The encoder uses the selected quantization level in encoding the image. | 01-22-2015 |
Jonathan Diggins, Lovedean GB
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20140161304 | METHOD AND APPARATUS FOR MODIFYING A VIDEO STREAM TO ENCODE METADATA - A watermark encoder receives a current video image together with current metadata associated with the current image. A metadata delay also makes available to the watermark decoder delayed metadata associated respectively with four or more of the preceding. Then the watermark encoder modifies pixel values of the current image not only to encode the current metadata but also the delayed metadata. At a decoder, if metadata for the current image is corrupted or missing, it can be recovered from one of the succeeding images. | 06-12-2014 |
20150237341 | METHOD AND APPARATUS FOR MANAGING AUDIO VISUAL, AUDIO OR VISUAL CONTENT - To manage audio visual content, a stream of fingerprints is derived in a fingerprint generator and received at a fingerprint processor that is physically separate from the fingerprint generator. Metadata is generated by processing the fingerprints to detect the sustained occurrence of low values of an audio fingerprint to generate metadata indicating silence; comparing the pattern of differences between temporally succeeding values of a fingerprint with expected patterns of film cadence to generate metadata indicating a film cadence; and comparing differences between temporally succeeding values of a fingerprint with a threshold to generate metadata indicating a still image or freeze frame. | 08-20-2015 |
Jonathan Diggins, Waterlooville GB
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20150078449 | GENERATING AN OUTPUT FRAME FOR INCLUSION IN A VIDEO SEQUENCE - In frame rate conversion, output frames (e.g. interpolated frames) are generated for inclusion in a video sequence. A first motion-compensated image may be generated for representing an output frame, e.g. by using motion estimation based on one or more of the existing frames of the video sequence. At least part of the first motion-compensated image is smoothed to determine a smoothed motion-compensated image. Trust indications can be determined for the pixels of the first motion-compensated image to indicate levels of trust in the pixel values. The trust indications may be used to determine how to selectively combine the pixels of the first motion-compensated image and the pixels of the smoothed motion-compensated image to thereby generate the output frame. | 03-19-2015 |
Matthew Diggins, Elkhart, IN US
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20150315413 | METHOD AND KIT FOR SEALING ROOF PENETRATIONS - A method and kit for forming a seal around a roof penetration is disclosed. The method comprises dispensing a one-part moisture curable sealant into pitch pan formed around a roof penetration. The one-part moisture curable sealant contains a polymer having non-terminal silane groups. The incorporation of non-terminal silane groups can provide for a greater number of crosslinking points than terminal silane groups. The non-terminal silane groups can be placed at specific points along the polymer backbone and the number of crosslinking points, or concentration of crosslinking units, can be controlled. Generally, as the crosslinking points can be provided along the polymer chain, the number of crosslinking points is increased, especially as compared to polymers only having terminal silane groups. Increasing the number of crosslinking points can result in improved elasticity and cure-through as compared with silyl-terminated polymers, in addition to other advantages. | 11-05-2015 |
Michael F. Diggins, Seattle, WA US
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20150215331 | DETECTING NETWORK ATTACKS - This disclosure generally relates to the generation of a packet signature for packets determined to correspond to a network attack, such as a denial of service (“DoS”) attack. Specifically, a set of data packets captured during normal system operations can be analyzed to determine a set of baseline attributes. Additional packets captured during an attack can be compared to the baseline attributes, to determine, for individual packets, a probability that the packet forms a part of the attack. A packet signature can then be generated to identify attributes that are characteristic of the attack. That signature can then be used to filter out packets and mitigate the attack. | 07-30-2015 |
Paul Diggins, Tucson, AZ US
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20120190837 | Nanoparticles for Manipulation of Biopolymers - Materials and methods for manipulation of biopolymers, including the separation, purification, immobilization, and archival storage of biopolymers is disclosed. | 07-26-2012 |
Paul E. Diggins, Tucson, AZ US
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20090182120 | SURFACE MEDIATED SELF-ASSEMBLY OF NANOPARTICLES - Materials and methods for surface mediated self assembly of nanoparticles for the isolation of biomolecules is provided. | 07-16-2009 |
20120003710 | Isolation of Biomolecules from Biological Samples - Nanoparticles for use in the collection, concentration, isolation and storage of biomolecules from biological samples are provided. More specifically, nanoparticles used to isolate biomolecules, including nucleic acids and proteins, cells, cell fragments, bacteria, and viruses from biological samples such as urine, cerebrospinal fluid (CSF), mouthwash samples, and amniotic fluid are provided. Kits for using nanoparticles for the isolation of biomolecules are also provided. | 01-05-2012 |
Randall B. Diggins, Essex, MD US
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20100154776 | COOKING RANGE BURNER HEAD ASSEMBLY - A burner assembly includes a substantially annular two-piece burner head having a base and a top. A plate is located in a central opening of the burner head and includes a slot for holding a pilot burner. Burner head annular channels incorporate one or more air dams to provide a backpressure feature within the burner head for more even flame height and stability. | 06-24-2010 |
Randall B. Diggins, Baltimore, MD US
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20110265782 | COOKING RANGE BURNER ARRANGEMENT - A cooking range burner head arrangement includes an annular burner head with a plurality of gas orifices, the burner head including a centrally disposed opening defining a first flow path for flowing secondary air upward into a combustion space proximate the burner head. A secondary air flow metering arrangement is associated with the burner head, the secondary air flow metering arrangement defining a second flow path and a third flow path, the second flow path located for flowing secondary air to the combustion space above the secondary flow provided by the first flow path, the third flow path located for flowing secondary air to the combustion space above the secondary flow provided by the second flow path. | 11-03-2011 |