Abstract: The invention relates to a registration system (13) for registering an optical shape system to an imaging system with an imaging device (2) like a radiation C-arm device with a tracking device (4) like an optical shape sensing tracking device. One or more optical cameras (27) are used to detect position information of a tracked object to register the shape coordinate system with that of the imaging system. The optical cameras are pre-calibrated with the imaging system, so that the detected position information in the camera system can directly be translated to the imaging system.

Abstract: The invention relates to an assisting apparatus for assisting in registering an imaging device like an x-ray C-arm device (2) with a position and shape determination device (15) like an OSS device. The apparatus comprises a database (16) providing registration values depending on registration image data sets and/or registration position and shape data sets, wherein the registration values are indicative of registration accuracies and/or registration times. The apparatus further comprises an evaluation unit (18) for evaluating the registration accuracy and/or the registration time based on an input registration image data set and/or position and shape data set by using the database. Thus, before, during and/or after a registration procedure the registration accuracy and/or the registration time can be evaluated, in order to assist in registering the imaging device with the position and shape determination device.

Abstract: The invention relates to a method for determining at least one applicable path (32) for the movement of an object, especially of a surgical and/or diagnostical device, in human tissue (14) or animal tissue by means of a data set of intensity data obtained by a 3D imaging technique, the applicable path (32) of movement connecting a starting position (28) of the device with a defined target location (30).

Abstract: The invention relates to a registration system (13) for registering an imaging device (2) like an x-ray C-arm device with a tracking device (4) like an optical shape sensing tracking device. An object detection unit (5) is adapted to a) allow a user to add markers to an image of an object for indicating arbitrary positions on the object and b) provide a representation of the object based on the added markers, wherein a registration unit (6) determines registration parameters based on a location of the object tracked by the tracking device and on the location of the representation. This kind of registration can be performed with any object being visible for the user in the image, thereby permitting to use a wide variety of objects for the registration.

Abstract: A monitoring system (10) includes at least one video camera (14), a motion unit (40), and a segmentation unit (42). The at least one video camera (14) is configured to continuously receive video of a subject in normal and darkened room conditions. The motion unit (40) identifies clusters of motion of the subject based on respiratory and body part motion in the received video of the subject. The segmentation unit (42) segments body parts of the subject based on the identified clusters of subject motion.

Abstract: A method for determining an applicable path of movement of an object in human or animal tissue is based on intensity data obtained by a 3D imaging technique. The applicable path of movement connects a starling position of the object with a defined target location. The method includes defining the target location of a reference point of the object and choosing at least one possible starting position of the reference point of the object. Further, the method includes determining a candidate path of movement between the corresponding possible starling position and the defined target location. Next, the candidate path of movement is evaluated for being an applicable path. The candidate path is evaluated based on information about local intensity extrema and/or intensity variation resulting from the intensity data along the candidate path of movement.

Abstract: Temporal data is analyzed and visualized with medical images. Visualizing temporal data includes providing a set of temporal data, detecting the number of distinct regions (40, 41) in the temporal data, based on the temporal behavior of the data, identifying and assigning a color scheme to each region and visualizing each region in accordance with the assigned color scheme. In embodiments, the number of distinct regions is detected based on the use of a clustering algorithm.

Abstract: The invention relates to a method for determining at least one applicable path (32) for the movement of an object, especially of a surgical and/or diagnostical device, in human tissue (14) or animal tissue by means of a data set of intensity data obtained by a 3D imaging technique, the applicable path (32) of movement connecting a starting position (28) of the device with a defined target location (30).

Abstract: The invention relates to a system (100) for retrieving an image from the storage of images, the system comprising: a retrieval unit (110) for retrieving an image from the storage of images, on the basis of similarity of images from the storage of images o a query image, wherein the similarity is defined by means of a similarity function; a relevance unit (120) for computing images t relevance of a first portion of the retrieved image to a respective first portion of the query image and of a second portion of the retrieved image to a respective second portion of the query image; and a visualization unit (130) for visualizing the relevance of the first and second portion of the retrieved image to the respective first and second portion of the query image. The relevance of the first and second portion of the retrieved image to the respective first and second portion of the query image may be computed using a first and second relevance function. The computed values of the relevance may be visualized, e.g.

Abstract: The invention relates to a system (100) for retrieving an image from image storage means, the system comprising: a retrieval unit (110) for retrieving a plurality of images from image storage means, on the basis of similarity between said images from image storage means and a query image, wherein the similarity is defined by a similarity function, and comprising a relevance unit (120) for computing values of relevance of images of the retrieved plurality of images on the basis of a value of a first attribute relating to the query image and values of a second attribute relating to the images of the retrieved plurality of images, and an update unit (130) for updating the similarity function on the basis of the computed values of relevance, and wherein the retrieval unit (110) is further adapted for retrieving the image from image storage means on the basis of the updated similarity function. The values of the first and second attributes are used by the retrieval unit to compute relevance values (e.g.

Abstract: The invention relates to a method, a system (101) and a computer program product to identify a particular data object of a data type in a database (104) that comprises data objects of the data type. The system (101) comprises a query composition unit (102) to compose a search query to identify a candidate data object being a candidate for the particular data object. A search unit (103) identifies the candidate data object in the database (104) based on the search query. A presentation unit (105) presents the candidate data object to the user. A feedback receiving unit (106) receives user feedback on the relevance or irrelevance of a segment of the candidate data object. The search unit (103) further identifies an improved candidate data object in response to the received user feedback. The improved candidate data object is an improved candidate for the particular data object.

Abstract: A system for analyzing a brain ventricle (8) is described. The system comprises an edge detector (52) for identifying an edge point (17) on an edge of the brain ventricle. Also, a length measurer (53) is provided for establishing a length measure of a path (10) starting from a central point (5) of the brain ventricle and terminating at the edge point (17). The edge detector (52) is arranged for detecting an edge point at an end of a lobe of the brain ventricle, the length measure corresponding to an extent of the lobe.

Abstract: A method of detecting a road feature in an image signal derived from an infrared-sensitive camera. The method, in overview, comprises processing an image frame by assigning binary values to pixels in the frame in response to their representative temperature, and then to analyze spatially the binary mask to identify regions of pixels having mutually similar assigned binary values. The road feature is subsequently found from the analysis of the identified regions of mutually similar binary values and a visual indication of the road feature in relation to the image frame provided to the user.

Abstract: The invention relates to analysis and visualization of temporal data and, in embodiments, to the area of visualization of temporal data associated with medical images. A method of visualizing temporal data is disclosed. The method comprises providing a set of temporal data, detecting the number of distinct regions (40, 41) in the temporal data, based on the temporal behavior of the data, identifying and assigning a color scheme to each region and visualizing each region in accordance with the assigned color scheme. In embodiments, the number of distinct regions is detected based on the use of a clustering algorithm.

Abstract: A system and method for displaying image data acquired in respect of, for example, a subject's brain. MRI image data is acquired (300) and a first contrast image, for example, MR T2 contrast mage is used to determine (304) the repair of hypo-intensity indicative of iron concentration. A second image is obtained (310) either by segmentation or by using a different type of contrast image, for example, T1 or PD, in which the boundaries between brain organs can be visibly determined. The regions of hypo-intensity (including the respective spatial resolution) is combined (312) with the second image to generate (314) an aggregate image showing the regions of hypo-intensity in association with the respective brain organs.

Abstract: The invention relates to a method (1) for determining a threshold in an image comprising image values, said method comprising the steps of: analyzing (3) the image values for determining edge points and associated gradients; classifying (5) image values into classes with respect to the edge points; obtaining (7) image threshold by combining data from the intensity histograms calculated for each class with statistical analysis of the said histograms. The invention further relates to a method of image segmentation, an image processing system and a computer program.

Abstract: A system and method for assuring a high resolution image of an object, such as the face of a person, passing through a targeted space are provided. Both stationary and active or pan-tilt-zoom cameras are utilized. The at least one stationary camera acts as a trigger point such that when a person passes through a predefined targeted area of the at least one stationary camera, the system is triggered for object imaging and tracking. Upon the occurrence of a triggering event in the system, the system predicts the motion and position of the person. Based on this predicted position of the person, an active camera that is capable of obtaining an image of the predicted position is selected and may be controlled to focus its image capture area on the predicted position of the person. After the active camera control and image capture processes, the system evaluates the quality of the captured face images and reports the result to the security agents and interacts with the user.

Abstract: A method of detecting a road feature in an image signal derived from an infrared-sensitive camera. The method, in overview, comprises processing an image frame by assigning binary values to pixels in the frame in response to their representative temperature, and then to analyze spatially the binary mask to identify regions of pixels having mutually similar assigned binary values. The road feature is subsequently found from the analysis of the identified regions of mutually similar binary values and a visual indication of the road feature in relation to the image frame provided to the user.

Abstract: The method of the invention comprises two steps of adapting an image: identifying a text in the image and modifying a typographical aspect of the text. The electronic device of the invention is operative to perform the method of the invention. The invention also relates to control software for making a programmable device operative to perform the method of the invention and to electronic circuitry for use in the device of the invention.

Abstract: The method of detecting a graphical object in an image of the invention comprises determining a first value of a feature in an object region (31, 33, 37, 39) of the image, the object region (31, 33, 37, 39) possibly containing the graphical object, determining a second value of the feature in a reference region (32, 38) of the image, the reference region (32, 38) being unlikely to contain the graphical object, and determining whether the object region (31, 33, 37, 39) contains the graphical object in dependency of a difference between the first value and the second value exceeding a certain threshold. The electronic device comprises electronic circuitry operative to perform the method of the invention.