11975 results about "Region of interest" patented technology

A multiple camera tracking system for interfacing with an application program running on a computer is provided. The tracking system includes two or more video cameras arranged to provide different viewpoints of a region of interest, and are operable to produce a series of video images. A processor is operable to receive the series of video images and detect objects appearing in the region of interest. The processor executes a process to generate a background data set from the video images, generate an image data set for each received video image, compare each image data set to the background data set to produce a difference map for each image data set, detect a relative position of an object of interest within each difference map, and produce an absolute position of the object of interest from the relative positions of the object of interest and map the absolute position to a position indicator associated with the application program.

An integrated endoscopic image acquisition and therapeutic delivery system for use in minimally invasive medical procedures (MIMPs). The system uses directed and scanned optical illumination provided by a scanning optical fiber or light waveguide that is driven by a piezoelectric or other electromechanical actuator included at a distal end of an integrated imaging and diagnostic/therapeutic instrument. The directed illumination provides high resolution imaging, at a wide field of view (FOV), and in full color that matches or excels the images produced by conventional flexible endoscopes. When using scanned optical illumination, the size and number of the photon detectors do not limit the resolution and number of pixels of the resulting image. Additional features include enhancement of topographical features, stereoscopic viewing, and accurate measurement of feature sizes of a region of interest in a patient's body that facilitate providing diagnosis, monitoring, and/or therapy with the instrument.

Systems and methods for registering, verifying, dynamically referencing, and navigating an anatomical region of interest of a patient are provided. In one embodiment, the anatomical region of interest is imaged using an imaging device such as, for example, an x-ray device. A tracked registration device may then be removably inserted in a conduit within the anatomical region and the position of the registration device may be sampled by a tracking device as the registration device is moved within the anatomical region through the catheter. The sampled position data is registered to the image data to register the path of the conduit to the anatomical region of interest. The same or a similar device may be used to dynamically reference the movements affecting the anatomical region and modify the registration in real time. The registration may also be verified.

The present invention provides methods to improve the relevancy of rendered advertising material to one or more consumers based on user-defined preferences, geolocation, and user-granted permission. The present invention achieves this through the presentation of exemplary methods for: i) the consolidation of advertisement information to include description, inventory, price, quantity and geolocation information of one or more merchants in a commerce network; ii) the delivery of relevant advertising material to one or more consumers using preference filters that can specify one or more merchants, merchant locations, products and services, and/or regions of interest at any time; and, iii) the presentation of location-based advertisements that are based on consumer-based permission and preference filters. These methods improve the user-targeting, geographic and time relevancy of advertisements by connecting merchants with relevant consumers who are looking to purchase items at that point in time.

Method and system for measuring physiological parameters. The method includes capturing a sequence of images of a human face and identifying the location of the face in a frame of the video and establishing a region of interest including the face. Pixels are separated in the region of interest in a frame into at least two channel values forming raw traces over time. The raw traces are decomposed into at least two independent source signals. At least one of the source signals is processed to obtain a physiological parameter.

Tissue visualization and manipulation systems are described herein. Such a system may include a deployment catheter and an attached imaging hood deployable into an expanded configuration. In use, the imaging hood is placed against or adjacent to a region of tissue to be imaged in a body lumen that is normally filled with an opaque bodily fluid such as blood. A translucent or transparent fluid, such as saline, can be pumped into the imaging hood until the fluid displaces any blood, thereby leaving a clear region of tissue to be imaged via an imaging element in the deployment catheter. Additionally, any number of therapeutic tools can also be passed through the deployment catheter and into the imaging hood for treating the tissue region of interest.

Systems and methods for providing high-quality region of interest (HQ-ROI) viewing within an overall scene by enabling one or more HQ-ROIs to be viewed in a controllable fashion, as higher quality ‘windows-within-a-window’ of regions (spatial subsets) of a scene.

A system and method for eye gaze tracking in human or animal subjects without calibration of cameras, specific measurements of eye geometries or the tracking of a cursor image on a screen by the subject through a known trajectory. The preferred embodiment includes one uncalibrated camera for acquiring video images of the subject's eye(s) and optionally having an on-axis illuminator, and a surface, object, or visual scene with embedded off-axis illuminator markers. The off-axis markers are reflected on the corneal surface of the subject's eyes as glints. The glints indicate the distance between the point of gaze in the surface, object, or visual scene and the corresponding marker on the surface, object, or visual scene. The marker that causes a glint to appear in the center of the subject's pupil is determined to be located on the line of regard of the subject's eye, and to intersect with the point of gaze. Point of gaze on the surface, object, or visual scene is calculated as follows. First, by determining which marker glints, as provided by the corneal reflections of the markers, are closest to the center of the pupil in either or both of the subject's eyes. This subset of glints forms a region of interest (ROI). Second, by determining the gaze vector (relative angular or Cartesian distance to the pupil center) for each of the glints in the ROI. Third, by relating each glint in the ROI to the location or identification (ID) of a corresponding marker on the surface, object, or visual scene observed by the eyes. Fourth, by interpolating the known locations of each these markers on the surface, object, or visual scene, according to the relative angular distance of their corresponding glints to the pupil center.

A system and method for servoing robot marks using fiducial marks and machine vision provides a machine vision system having a machine vision search tool that is adapted to register a pattern, namely a trained fiducial mark, that is transformed by at least two translational degrees and at least one mon-translational degree of freedom. The fiducial is provided to workpiece carried by an end effector of a robot operating within a work area. When the workpiece enters an area of interest within a field of view of a camera of the machine vision system, the fiducial is recognized by the tool based upon a previously trained and calibrated stored image within the tool. The location of the work-piece is derived by the machine vision system based upon the viewed location of the fiducial. The location of the found fiducial is compared with that of a desired location for the fiducial. The desired location can be based upon a standard or desired position of the workpiece. If a difference between location of the found fiducial and the desired location exists, the difference is calculated with respect to each of the translational axes and the rotation. The difference can then be further transformed into robot-based coordinates to the robot controller, and workpiece movement is adjusted based upon the difference. Fiducial location and adjustment continues until the workpiece is located the desired position with minimum error.

The lighting behavior of a vision system is inconsistent between vision systems, within a vision system over time or between parts being viewed. This inconsistency makes it difficult to correctly run part programs even within a single run of parts on a single machine. The multi area image quality tool systems, methods and graphical user interfaces adjust the light intensity of a vision system to obtain a desired image quality or characteristic of a captured image. The multi area image quality tool is used to define a plurality of regions of interest within a captured image to be used to determine the image quality or characteristic of the captured image resulting from a current illumination level. The multi area image quality tool allows a user to easily and quickly define multiple regions of interest that can be used to determine the image quality of a captured image. The multi area image quality tool allows the user to specify the location, orientation and size of two or more regions of interest around a critical feature of the captured image, and to specify the light sources to be used to illuminate the part, the image quality to be measured, and a range of acceptable values for that image quality. Portions of the image are extracted based on the defined regions of interest. The image quality of the captured image is determined based on an analysis of the regions of interest and the image quality defined in the multi area image quality tool.

An apparatus and method for detecting a region of interest in an image are disclosed. Image representations for a set of images that have been manually annotated with regions of interest are stored, along with positive and negative representations of each image which are similarly derived to the image representations except that they are based on features extracted from patches within the region of interest and outside it, respectively. For an original image for which a region of interest is desired, the stored information for K similar images is automatically retrieved and used to train a classifier. The trained classifier provides, for each patch of the original image, a probability of being in a region of interest, based extracted features of the patch (represented, for example, as a Fisher vector), which can be used to determine a region of interest in the original image.

Embodiments of a system and method for using mobile agents to gather trust information for evaluating trust in peer-to-peer networks. A peer node may launch a mobile agent on a network including an itinerary of peer nodes to be visited by the mobile agent and an indication of an area of interest. The mobile agent may determine if a visited peer node stores trust evaluations for other peer nodes as providers of codats relevant to the area of interest and, if so, the trust evaluations may be stored as payload data in the mobile agent. After completing the itinerary, the mobile agent may return the payload to the initiating peer node. The initiating peer node may use the trust evaluations collected by the mobile agent in determining or adjusting trust evaluations for peer nodes as providers of codats relevant to the area of interest.

A method and apparatus for controlling the safe delivery of thermosensitive liposomes containing medicant to a targeted tissue region using ultrasound. Thermosensitive liposomes containing medicants are delivered to a region of interest, the region of interest is located using ultrasound imaging, ultrasound therapy is applied to heat the region of interest, and the temperature of the region is monitored to determine whether a designated threshold temperature has been reached which allows for the release of medicants from the liposomes. If the threshold temperature is reached, and the liposomes are melted, the treatment stops. If the threshold temperature has not been reached, the application of ultrasound therapy and ultrasound imaging are alternated until the threshold temperature is reached. The ultrasound imaging, temperature monitoring and ultrasound therapy are preferably performed with a single transducer.

A content delivery and display solution includes a viewing application for displaying immersive images with a region of interest, in addition to conventional fixed-aspect-ratio media. The display can include the layered display of metadata, multiple windows, and images or hotspots embedded into the immersive image. The viewing application can be used for the display of either live or prerecorded images, from local or online sources.

A method and system for measuring and reacting to human interaction with elements in a space, such as public places (retail stores, showrooms, etc.) is disclosed which may determine information about an interaction of a three dimensional object of interest within a three dimensional zone of interest with a point cloud 3D scanner having an image frame generator generating a point cloud 3D scanner frame comprising an array of depth coordinates for respective two dimensional coordinates of at least part of a surface of the object of interest, within the three dimensional zone of interest, comprising a three dimensional coverage zone encompassing a three dimensional engagement zone and a computing comparing respective frames to determine the time and location of a collision between the object of interest and a surface of at least one of the three dimensional coverage zone or the three dimensional engagement zone encompassed by the dimensional coverage zone.

Systems, devices, and methods to provide tools enhance the tactical or strategic situation awareness of on-scene and remotely located personnel involved with the surveillance of a region-of-interest using field-of-view sensory augmentation tools. The sensory augmentation tools provide updated, visual, text, audio, and graphic information associated with the region-of-interest adjusted for the positional frame of reference of the on-scene or remote personnel viewing the region-of-interest, map, document or other surface. Annotations and augmented reality graphics projected onto and positionally registered with objects or regions-of-interest visible within the field of view of a user looking through a see through monitor may select the projected graphics for editing and manipulation by sensory feedback from the viewer.

Systems, devices, and methods are described for wearable heads-up displays (“WHUDs”) that provide virtual content with heterogeneous display quality. The WHUDs display virtual content with relatively high quality in a region of interest of the user's field of view (“FOV”) and with relatively lower quality in regions of the user's FOV that are outside of the region of interest. The region of interest may align with a foveal region of the user's FOV at which the user's visual acuity is maximal. By limiting display quality for peripheral regions of the virtual content at which the typical user is not able to focus, graphical processing power and/or WHUD battery power are conserved. As a result, a smaller battery and/or smaller other components may be used and the form factor of the WHUD may be reduced. A sensor may be employed to determine the region of interest in the user's FOV.

The present invention provides an imaging probe for imaging mammalian tissues and structures using high resolution imaging, including high frequency ultrasound and optical coherence tomography. The imaging probes structures using high resolution imaging use combined high frequency ultrasound (IVUS) and optical imaging methods such as optical coherence tomography (OCT) and to accurate co-registering of images obtained from ultrasound image signals and optical image, signals during scanning a region of interest.

A method and device for encoding, decoding, storage and transmission of a scalable data stream to include layers having different coding properties including: producing one or more layers of the scalable data stream, wherein the coding properties include at least one of the following: Fine granularity scalability information; Region-of-interest scalability information; Sub-sample scalable layer information; Decoding dependency information; and Initial parameter sets, and signaling the layers with the characterized coding property such that they are readable by a decoder without the need to decode the entire layers. A corresponding method of encoding, decoding, storage, and transmission of a scalable bit stream is also disclosed, wherein at least two scalability layers are present and each layer has a set of at least one property, such as those above identified.

A method and apparatus of displaying a magnified image comprising obtaining an image of a scene using a camera with greater resolution than the display, and capturing the image in the native resolution of the display by either grouping pixels together, or by capturing a smaller region of interest whose pixel resolution matches that of the display. The invention also relates to a method whereby the location of the captured region of interest may be determined by external inputs such as the location of a person's gaze in the displayed unmagnified image, or coordinates from a computer mouse. The invention further relates to a method whereby a modified image can be superimposed on an unmodified image, in order to maintain the peripheral information or context from which the modified region of interest has been captured.

System and method for representing and rate the trustworthiness of peers as providers of content and data (codats) relevant to the peers' interests. In one embodiment, trust may be propagated through transaction pipes (paths) along which codats located in a search for codats relevant to an area of interest may be accessed by the requestor. In some embodiments, the trust a peer has in another peer as a provider of codats may be a function of the trust values of the provider peer and all other peers on a path. If there are multiple paths, trust in the provider peer may be an average of the trust values for all the paths. Trust in a provider peer may be used to determine confidence in codats provided by the peer. Embodiments may provide mechanisms for feeding back trust information to the providing peer and for propagating trust information to other peers.