Abstract: A configuration management service provides data identifying its subscribers to a secure sharing service that executes in an account that has a higher security level than a service account used to provide the configuration management service. The secure sharing service securely determines whether each subscriber has authorized producer services to share resource configuration data with the configuration management service. If a subscriber has authorized such sharing, information identifying the subscriber can be stored in a location accessible to the producer services. If a subscriber has not authorized such sharing, the secure sharing service will not make the subscriber's information available to the producer services. The producer services can use the subscriber data to provide resource configuration data to the configuration management service only for those subscribers that subscribe to both the configuration management service and to the producer services.

Abstract: A system for storing and retrieving configuration data causes time-based and content-based indexes to be stored on a storage service. The system receives a request to identify the value of a property during a time period indicated by the request. The system retrieves, from the storage service, a time-based index associated with the time period. The retrieved time-based index is searched to identify a content index associated with the time period. The system retrieves the content index from the storage service, and searches the content index to identify a value, of the property, that is associated with the time period. The system generates a response to the request based on the results of the search of the content index.

Abstract: Configurations of computing resources established in a network-based computing service can be tested to assess impacts of proposed changes to the configuration states of the computing resources or to policies governing the configurations of such computing resources. Test environments can be established to simulate an operational computing environment under study. Changes to the configuration of one or more computing resources can be introduced to the test environment, and impacts to the test environment can be assessed. Changes to configuration policy can also be introduced and subsequent impacts can be observed.

Abstract: A configuration management system may receive information defining a threshold range of deviation from a baseline configuration of at least one computing resource. The system may acquire periodic records of configuration information, from which it may be determined if the current configuration at least one computing resource has deviation from the baseline outside of the tolerated threshold. A record indicative of a prior configuration within a threshold configuration deviation may be identified. A template may be formed based on the record. The at least one computing resource may be reconfigured, based on the template, to be within the threshold configuration deviation.

Abstract: A configuration history service for web-based computing resources is implemented by capturing and storing a historical record of each configuration state for each computing resource in a subscriber's account. Files of the configuration history store information about a computing resource type offered by the web service. The file comprises records for each particular resource of that type that is or was actively configured in the subscriber's account during the period that the configuration history service is active in the account. Each record lists a particular configuration state, at a particular point in time, for a particular computing resource. The configuration history of a computing resource can be displayed as a timeline by which a subscriber can access information describing the configuration state of the particular computing resource at any point in time.

Abstract: Configurations of computing resources established on a web-based computing service can be monitored, managed and controlled. According to one embodiment, a method may include discovering a set of computing resources being used by an enterprise. The disclosed resource configuration service can deliver a set of resource-specific data that uniquely identifies each computing resource and describes each resource's configuration state. The resource configuration service monitors the computing environment and detects changes to the configurations of computing resources. The resource configuration service can deliver a stream of notifications when computing resources are created, updated, deleted or otherwise reconfigured. The notifications can be used by, for example, software tools or system administrators.

Abstract: Configurations of computing resources established on a web-based computing service can be monitored, managed and controlled. According to an embodiment, a configuration compliance service is implemented. Policy rules governing attributes of configuration states for computing resources in a subscriber's account are defined. The computing resources in the account are monitored for changes to configuration states. In response to detection of a change to a configuration state that violates a rule, a predefined action is taken. The predefined action can include sending a notification to the subscriber's account, reconfiguring the configuration state of the computing resource, and deactivating the computing resource.

Abstract: A method of determining change in a state of an object using images of the object, the method including providing a first image and a second image of the object, the first image and the second image being spaced apart in time, performing a plurality of pixel-based change detection algorithms to obtain a plurality of output difference products/images containing change information and pseudo change information, combining the plurality of output difference products to form a hybrid output difference product, and thresholding the output difference product to detect changes in the object.

Abstract: A method of determining change in a state of an object using images of the object, the method including providing a first image and a second image of the object, the first image and the second image being spaced apart in time, performing a plurality of pixel-based change detection algorithms to obtain a plurality of output difference products/images containing change information and pseudo change information, combining the plurality of output difference products to form a hybrid output difference product, and thresholding the output difference product to detect changes in the object.

Abstract: A method of determining change in a state of an object using images of the object, the method including providing a first image and a second image of the object, the first image and the second image being spaced apart in time, performing a plurality of pixel-based change detection algorithms to obtain a plurality of output difference products/images containing change information and pseudo change information, combining the plurality of output difference products to form a hybrid output difference product and thresholding the output difference product to detect changes in the object.

Abstract: A method of determining change in a state of an object using images of the object, the method including providing a first image and a second image of the object, the first image and the second image being spaced apart in time, performing a plurality of pixel-based change detection algorithms to obtain a plurality of output difference products/images containing change information and pseudo change information, combining the plurality of output difference products to form a hybrid output difference product and thresholding the output difference product to detect changes in the object.

Abstract: A compositing process for selecting spatial data collected over a period of time, creating temporal data cubes from the spatial data, and processing and/or analyzing the data using temporal mapping algebra functions. In some embodiments, the temporal data cube is creating a masked cube using the data cubes, and computing a composite from the masked cube by using temporal mapping algebra.

Abstract: A method of enhancing a resolution of an image by fusing images includes applying a principal component analysis to a multispectral image to obtain a plurality of principal components, and replacing a first component in the plurality of principal components by a panchromatic image. The method further includes resampling remaining principal components to a resolution of the panchromatic image, and applying an inverse principal analysis to the panchromatic image and the remaining principal components to obtain a fused image of the panchromatic image and the multispectral image.

Abstract: A method of enhancing a resolution of an image by fusing images includes applying a principal component analysis to a multispectral image to obtain a plurality of principal components, and replacing a first component in the plurality of principal components by a panchromatic image. The method further includes resampling remaining principal components to a resolution of the panchromatic image, and applying an inverse principal analysis to the panchromatic image and the remaining principal components to obtain a fused image of the panchromatic image and the multispectral image.

Abstract: A method of determining change in a state of an object using images of the object, the method including providing a first image and a second image of the object, the first image and the second image being spaced apart in time, performing a plurality of pixel-based change detection algorithms to obtain a plurality of output difference products/images containing change information and pseudo change information, combining the plurality of output difference products to form a hybrid output difference product and thresholding the output difference product to detect changes in the object.

Abstract: A compositing process comprises selecting a spatial data collected over a period of time, creating temporal data cubes from the spatial data, and processing and/or analyzing the data using temporal mapping algebra functions. In some embodiments, the temporal data cube is creating a masked cube using the data cubes, and computing a composite from the masked cube by using temporal mapping algebra.

Abstract: A method of enhancing a resolution of an image by fusing images includes applying a principal component analysis to a multispectral image to obtain a plurality of principal components, and replacing a first component in the plurality of principal components by a panchromatic image. The method further includes resampling remaining principal components to a resolution of the panchromatic image, and applying an inverse principal analysis to the panchromatic image and the remaining principal components to obtain a fused image of the panchromatic image and the multispectral image.