Canon Kabushiki Kaisha

David Robert James Monaghan

Ekaterina Stefanov

Paul William Morrison

Belinda Margaret Yee

Dixon De Sheng Deng

Rajanish Calisa

Oscar Alejandro De Lellis

James Philip Andrew

Yu-Ling Chen

Matthew Raphael Arnison

Peter William Mitchell Ilbery

Ruimin Pan

Edward James Iskenderian

Ian Geoffrey Combes

Qiang Liu

Matthew John Grasso

Anthony John Arnold

One or more embodiments of an apparatus, system and method of compensating image data for phase fluctuations caused by a wave deforming medium, and storage or recording mediums for use therewith, are provided herein. At least one embodiment of the method comprises capturing, by a sensor of an imaging system, first image data and second image data for each of a plurality of pixel positions of the sensor, the sensor capturing an object through a wave deforming medium causing a defocus disparity between the first image data and second image data; and determining the defocus disparity between the first image data and the second image data, the defocus disparity corresponding to a defocus wavefront deviation of the wave deforming medium. The method may further comprise compensating the image data captured by the sensor for phase fluctuations caused by the wave deforming medium using the determined defocus disparity.

Image processing for turbulence compensation

A method, apparatus and system of projecting text characters onto a textured document are described. The method comprises determining, from a captured image of the textured surface, a measure of the texture on the surface for a region of the textured surface over which the text characters are to be projected; selecting, based on a function of the determined measure, a glyph set, each glyph in the glyph set having visually contrasting inner and outer portions, the outer portion being sized proportionally to the inner portion according to the determined measure; and projecting the text characters onto the textured surface on of region using the selected glyph set.

Projecting text characters onto a textured surface

A method of displaying augmented reality content on a physical surface is disclosed. A surface complexity measure is determined for the physical surface from a captured image of the physical surface. A content complexity measure is determined for the augmented reality content to be applied to the physical surface. The content complexity measure represents an amount of fine detail in the augmented reality content. The method determines if the amount of fine detail in the augmented reality content is to be modified, based on a function of the surface complexity measure and said content complexity measure. A display attribute of the augmented reality content is adjusted to modify the fine detail in the augmented reality content. The modified augmented reality content is displayed on the physical surface.

Positioning of projected augmented reality content

A method of displaying virtual content on an augmented reality device () is disclosed. The virtual content is associated with a scene. An image of a scene captured using the augmented reality device () is received. A viewing time of the scene is determined, according to a relative motion between the augmented reality device and the scene. Virtual content is selected, from a predetermined range of virtual content, based on the determined viewing time. The virtual content is displayed on the augmented reality device () together with the image of the scene.

Time constrained augmented reality

A method of determining a thread from a plurality of threads to execute a task in a multi-processor computer system. The plurality of threads is grouped into at least one subset associated with a cache memory of the computer system. The task has a type determined by a set of instructions. The method obtains an execution history of the subset of plurality of threads and determines a weighting for each of the set of instructions and the set of data, the weightings depending on the type of the task. A suitability of the subset of the threads to execute the task based on the execution history and the determined weightings, is then determined. Subject to the determined suitability of the subset of threads, the method determining a thread from the subset of threads to execute the task using content of the cache memory associated with the subset of threads.

Efficient cache reuse through application determined scheduling

Disclosed is a method () of determining, for a rendering job () comprising one or more page building jobs, a start time for a print engine () to print the rendering job (), the method including determining () for the rendering job a current start time for printing based on at least a predicted finishing time of a page building job, determining () a difference between the predicted finishing time and an actual finishing time of the page building job, determining () if, based on the difference, a predetermined condition is satisfied, and if the predetermined criterion is satisfied, determining () an updated start time for printing the rendering job based on information relating to the actual finishing time of the page building job, and starting () the print engine to print the rendering job at the updated start time.

Predicting the times of future events in a multi-threaded RIP

A method of storing an image is disclosed. A frequency-domain representation of the image is received, the frequency-domain representation having a plurality of bit-planes. The frequency-domain representation is divided into a first set of bit-planes and a second set of bit-planes, the first set of bit-planes being a higher set of bit-planes than the second set of bit-planes. The first set of bit-planes and the second set of bit-planes is partitioned into a plurality of partitions. At least one partition from the second set of bit-planes is inserted into the plurality of partitions of the first set of bit-planes to produce a plurality of arranged partitions of the image. The arranged partitions of the image are stored.

Compression of high bit-depth images

Disclosed is a method of rasterizing a page comprising a plurality of graphic objects. The method obtains a plurality of pixel-aligned object edges () of the graphic objects (), and determining a pixel generation path () for the plurality of graphic objects. The method determines a plurality of crossing locations (-) based on the pixel aligned object edges and the pixel generation path, at least one of the crossing locations being a vertical crossing location and at least one other crossing location being a horizontal crossing location, rasterizes the page according to the pixel generation path by updating a fill sequence (-) upon encountering said determined crossing locations.

Rastering disjoint regions of the page in parallel

The disclosure relates to an image processing system of encoding spectral coefficients of an image. According to the disclosure, the spectral coefficients of the image are received, the spectral coefficients being quantized, and a scaling factor to be applied to the image for rendering a bitmap of the image after decoding is received. The received spectral coefficients are partitioned into a plurality of groupings, wherein a number of coefficients in each of the groupings is determined based on the scaling factor for rendering the bitmap of the image. The spectral coefficients in each of the plurality of groupings are encoded, and the plurality of groupings of encoded spectral coefficients are transmitted to a decoder.

Resolution independent image degradation

A Hybrid Compressor and method of compressing a tile of pixels within an image are disclosed. An Edge Processor of the Hybrid Compressor analyzes pixel runs of the tile and generates boundary data defining one or more regions comprising pixels of substantially identical color. A Palette Processor of the Hybrid Compressor generates data defining a color value for each region. An Image Processor of the Hybrid Compressor generates a representation of pixels not included in the one or more regions.

Method and apparatus for hybrid image compression

Disclosed is method of encoding a set of data values (-). Each data value corresponds to a pixel position () within an image (). The method operates on a current () said data value at a current pixel position. The method creates () a context set () for the data value (), the context set including a data value at a pixel position () in the set immediately preceding the current pixel position in an encoding order, wherein the immediately preceding pixel position is not adjacent said current pixel position within said image. The method then encodes () the data value () using the created context set (). A corresponding decoding method is also provided.

Lossless compressor for image data values

Disclosed is a variable-length image compression arrangement which represents successive distinct image data values () of an image using corresponding non-decreasing Palette values (), and which incorporates () into the encoded data stream information recording the position in the encoded data stream at which each Palette value bit representation length increase occurs.

Growing community of inventors

Eastwood, Australia

David Robert James Monaghan