Method and System of Increasing Spatial Resolution
[D] The invention is a new development in that it increases the spatial resolution of airborne or spaceborne hyperspectral imageries, based on the sensor's inherent characteristics. The technique can increase the spatial resolution of acquired hyperspectral imagery without using any additional images from other sensors, as would be the case for image fusion. Instead, this technology uses the intrinsic spatial distortion, referred to as "keystone", of the sensor that acquired the imagery, and uses it as additional information to increase the spatial resolution of the hyperspectral imagery. Through use of this technique, spatial resolution of hyperspectral imagery can be increased by a factor of two.
The CSA technology uses the keystone-induced spatial shift of the same ground sample pixels in different band images of hyperspectral imagery as additional information. This distortion-induced pixel shift carries similar spatial information as do multiple observations of the same scene. The CSA technology derives sub-pixel shifted images from the hyperspectral imagery itself by using the keystone characteristics hidden in the imagery. The derived sub-pixel shifted images are then organized and integrated to produce a high-resolution, single-band image by using iterative back-projection (IBP) that was previously developed in order to reconstruct a high-resolution image by fusing sub-pixel-shifted, low-resolution images of the same scene.
The invention is applicable to any field in which there is a need to enhance the spatial resolution of multi-dimensional imageries acquired by a pushbroom imaging spectrometer. Examples are airborne hyperspectral imaging and 3-D optical medical imaging, for which the technology can be applied to produce sharper images with higher resolution.
The Business Opportunity
Components of a complex system are subject to possible and probable faults during operation. A means of identifying a subset of components that most likely include the faulty component(s) is required since it is impossible and impractical to examine all system components. Probing techniques are then required to identify the exact faulty component(s) from the suspected subset of components. The main limitation of traditional approaches is poor scalability to the number of components in the underlying system. In addition, traditional approaches suffer from high computational memory and processing usage.
The invention has direct application to the processing of hyperspectral datasets from spaceborne or airborne remote sensing. The invention can improve the spatial resolution and data usefulness for end-users in government, the university community and industry (e.g., in agriculture, mining and forestry). The technology will interest companies that provide hyperspectral image analysis software or customized data processing services to end-users.
Technology Transfer Details
The technology is available for licensing.
The business opportunity may be referred to by its CSA case ID: 51025
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- Number: WO2012106797
- Status: Pending Patent Application
- Source: World Intellectual Property Organization (WIPO)
- Date modified: