| Calgary Scientific Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110299745 | PARALLEL PROCESS FOR LEVEL SET SEGMENTATION OF VOLUME DATA - A parallelized sparse field method for segmenting a volume dataset is provided. Using a processor a level set field within a multi-dimensional dataset comprising a plurality of voxels is initialized in parallel operation. The multi-dimensional dataset is indicative of an object. An initial set of active voxels is then generated in parallel operation in dependence upon the initialized level set field. New active voxels are determined in parallel operation. Duplicate active voxels are then removed in parallel operation, followed by compacting the active voxels in parallel operation. The process is repeated until a quantitative stopping criterion is met and level set segmentation data indicative of a feature of the object are determined in dependence upon the level set field. | 12-08-2011 |
| 20110074780 | Level set segmentation of volume data - A method for segmenting a volume dataset is provided. During initialization a level set field within a volume dataset is initialized and an initial set of active voxels is determined in dependence upon the initialized level set field. In an iteration process the level set field for the set of active voxels is updated followed by updating of the set of active voxels. The iteration is continued until the number of active voxels is less than a predetermined threshold. Level set segmentation data are then determined in dependence upon the level set field and provided for, for example, graphical display or storage. | 03-31-2011 |
| 20100239177 | Image data transmission - A method for transmitting image data sets via a communication network is provided. Image data are processed for dividing the image into a plurality of image sub regions and for determining for each of the plurality of the image sub regions a hash code in dependence upon pixel data of pixels located in the respective image sub region. The hash codes are transmitted together with location data of the respective image sub regions if the hash code exists in an associative dataset and the pixel data are transmitted together with location data of the respective image sub regions if the hash code does not exist in the associative dataset. Upon receipt of at least one of the hash codes and the pixel data together with the location data, image data are generated by performing at least one of: retrieving the pixel data from the associative dataset in dependence upon the received hash codes and placing the retrieved pixel data in the image in dependence upon the location data; and, placing the received pixel data in the image in dependence upon the location data. | 09-23-2010 |
| 20100223566 | Method and system for enabling interaction with a plurality of applications using a single user interface - A method for simultaneously interacting with a plurality of application programs is provided. Using a processor an application interaction program having a plurality of application programs associated therewith is executed. Interactive functionalities of the plurality of application programs are associated with respective interaction zones. An interactive functionality being a same for at least two application programs is associated with a single interaction zone. Display data indicative of a single user interface comprising the interaction zones are then generated. The interaction zones enable user interaction with the plurality of application programs. Using a graphical display connected to the processor the display data are displayed in a human comprehensible fashion. | 09-02-2010 |
| 20100207962 | Image data transmission from GPU to system memory - A method for transmitting image data sets is provided. At a first location of a computer system image difference data are determined by performing a differencing operation between corresponding pixels of a first image and second image. The first image and the second image are divided into sub regions. Sub region difference data are determined in dependence upon the sub regions and the image difference data. The sub region difference data are indicative of sub regions having same pixel values in the first and the second image and are indicative of sub regions having at least a different pixel value in the first and the second image. Image data in dependence upon the sub region difference data are transmitted to a second location of the computer system. The image data correspond to sub regions having at least a different pixel value in the first and the second image. At the second location the image data are replaced in the respective sub regions of the first image retrieved from storage at the second location. | 08-19-2010 |
| 20100201685 | Configurable depth-of-field raycaster for medical imaging - A method for volume ray casting is provided. For each pixel of a 2D image placed in a view plane a ray of sight is projected through a volume determined by a plurality of voxels of a volumetric dataset indicative of an object. A plurality of sampling points is determined along each ray of sight such that a distance between two consecutive sampling points is larger at a larger distance to the view plane. At each sampling point a color value and a transparency value is determined in dependence upon voxels in proximity of the sampling point and a lighting calculation, wherein for the lighting calculation a first lighting model and a second lighting model are used in dependence upon a distance of the sampling point to the view plane. For each ray of sight a final color value is determined by compositing along the ray the color values and the transparency values. The final color value of each ray corresponds to a pixel value of the 2D image. The color and the transparency value of a sampling point are composited with the color and transparency value of a previous sampling point before determining the color and transparency value of a following sampling point. The compositing is stopped when the composited transparency value is within a predetermined range less than a value indicative of opacity. | 08-12-2010 |
| 20100146044 | Data communication in a picture archiving and communications system network - A method and system for accessing a data file is provided. At a server computer a request for accessing a data file of a plurality of data files stored in a database is received. The server computer is connected to the database via a first communication link and a second communication link. Metadata associated with the data file in the database are accessed via the first communication link using a first query protocol. In dependence upon the metadata the data file is located in the database. At least a portion of data stored in the data file is then accessed in the database via the second communication link using a second query protocol. | 06-10-2010 |
| 20100131591 | Method and system for providing remote access to a state of an application program - A method and system for providing remote access to a state of an application is provided. The method comprises executing an application program at a server computer for performing an application associated therewith. At a client computer connected to the server computer via a communication network a remote access program is executed for providing remote access to a state of the performed application. At the client computer a client difference program having encoded data indicative of a change of a state of the application last received from the server computer is generated and transmitted to the server computer. At the server computer the client difference program is executed for determining an updated state of the application and a server difference program having encoded a difference between the updated state of the application and the state of the application last sent to the client computer is generated. The server difference program is then transmitted to the client computer and at the client executed for updating the state of the application last received from the server computer. Display data indicative of the updated state of the application last received from the server computer are generated and displayed in a human comprehensible fashion on a display. | 05-27-2010 |
| 20090285462 | Image texture characterization of medical images - A method for texture characterization is provided. Multi-dimensional spectrum data are determined by transforming multi-dimensional image data into Fourier domain. The multi-dimensional spectrum data are partitioned into a plurality of partitions, wherein each partition is associated with a predetermined set of orthogonal voice frequencies. The partitioned multi-dimensional spectrum data are then transformed into Stockwell domain resulting in discrete orthonormal Stockwell transform data. The discrete orthonormal Stockwell transform data are then processed to determine data associated with image texture, which are indicative of a feature of the object. | 11-19-2009 |
| 20090279757 | Texture quantification of medical images - A method for texture quantification is provided. Data indicative of a complex-valued local spatial frequency distribution in space-frequency domain are determined by processing a multi-dimensional image data set based on a Stockwell transform with a phase term corresponding to spatial locations of respective frequency components being expressed in terms of radial distance and angle of orientation. The complex-valued local spatial frequency distribution is indicative of a feature of the object. Data indicative of a low frequency energy distribution are determined by filtering the data indicative of a complex-valued local spatial frequency distribution using a band-pass filter having a predetermined low frequency energy bandwidth. | 11-12-2009 |
