Abstract:
Embodiments of the present invention generally relate to systems and methods comprising First Order Multiple Hypothesis Testing for a Global Nearest Neighbor Data Correlation solution. Generating and storing multiple target hypotheses to allow immediate recovery in case of a false decision in uncertain association environment, improves the system's ability to handle multiple target tracking, in terms of tracker error, and creates a more accurate situational picture for a system's operator. Introducing the quality factor, and a configurable number of maximum hypotheses testing, assures the system is easily adjustable to different environments, to balance tradeoffs between its estimation accuracy and computational load.
Abstract:
Shadow is an inseparable aspect of all natural scenes. When there are multiple light sources or multiple reflections several different shadows may overlap at the same location and create complicated patterns. Shadows are a potentially good source of information about a scene if the shadow regions can be properly identified and segmented. However, shadow region identification and segmentation is a difficult task and improperly identified shadows often interfere with machine vision tasks like object recognition and tracking. A shadow separation and contrast enhancement method based on the polarization of light is provided. Polarization information of scenes is captured by a polarization-sensitive camera and the scenes are processed to effectively separate shadows from different light sources.
Abstract:
Search terms are derived automatically from images captured by a camera equipped cell phone, PDA, or other image capturing device, submitted to a search engine to obtain information of interest, and at least a portion of the resulting information is transmitted back locally to, or nearby, the device that captured the image.
Abstract:
A recognition device (100) and method (200) for recognizing a target (302). The recognition device (100) includes a sensor (112) and an electronic processor (102). The electronic processor (102) configured to receive the characteristic from the sensor (112). The electronic processor (102) identifies a profile based on the characteristic and compares the profile to a plurality of predetermined profiles (103) to determine an identity profile. The electronic processor (102) identifies the target (302) based on the identity profile and determines, based on at least one selected from the group consisting of a location of the target (302), speed of the target (302), and a direction of movement of the target (302), a virtual geographic boundary (300). The electronic processor (102) causes a transmission of the at least one selected from the group consisting of the identity profile and the characteristic to at least one associated device located in the virtual geographic boundary (300).
Abstract:
In accordance with some embodiments, connected-component labeling is performed in both the screen dimensions (which may be referred to as the x and y dimensions) and a depth dimension to label objects in a depth image. Then the contour of labeled blobs may be used to identify an object in the depth image. Using contours may be advantageous in some embodiments because it reduces the amount of data that must be handled and the extent of computations, compared to conventional techniques which use bit map based operations.
Abstract:
Systems and methods for image based location estimation are described. In one example embodiment, a first positioning system is used to generate a first position estimate. A set of structure façade data describing one or more structure façades associated with the first position estimate is then accessed. A first image of an environment is captured, and a portion of the image is matched to part of the structure façade data. A second position is then estimated based on a comparison of the structure façade data with the portion of the image matched to the structure façade data.