Abstract:
With the launch of several planetary missions in the last decade, a large amount of planetary images has been already acquired and much more will be available for analysi...Show MoreMetadata
Abstract:
With the launch of several planetary missions in the last decade, a large amount of planetary images has been already acquired and much more will be available for analysis in the coming years. The image data need to be analyzed, preferably by automatic processing techniques because of the huge amount of data. Although many automatic feature extraction methods have been proposed and utilized for earth remote sensing images, these methods are not always applicable to planetary data that often present low contrast and uneven illumination characteristics. Here, we propose a new unsupervised method for the extraction of different features of elliptical and geometrically compact shapes, such as craters and rocks of compact shape (e.g., boulders), to be used for image registration purposes. This approach is based on the combination of several image processing techniques, including watershed segmentation and the generalized Hough transform. The method potentially has application for extraction of craters, rocks, and other geological features.
Published in: IEEE Geoscience and Remote Sensing Letters ( Volume: 9, Issue: 1, January 2012)
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- IEEE Keywords
- Index Terms
- Image Registration ,
- Planetary Images ,
- Combination Of Techniques ,
- Boulder ,
- Geological Features ,
- Hough Transform ,
- Watershed Segmentation ,
- Uneven Illumination ,
- Typical Features ,
- True Positive ,
- Optical Tomography ,
- Digital Images ,
- Image Features ,
- Unsupervised Learning ,
- Digital Elevation Model ,
- Automatic Detection ,
- Binary Image ,
- Segmentation Results ,
- Reference Map ,
- Template Matching ,
- Panchromatic Image ,
- Spatial Feature Extraction ,
- Boundary Features ,
- Planetary Surface ,
- Earth Data ,
- Image Gradient ,
- Shape Reconstruction ,
- Global Optimization Techniques ,
- Post-processing Step
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Image Registration ,
- Planetary Images ,
- Combination Of Techniques ,
- Boulder ,
- Geological Features ,
- Hough Transform ,
- Watershed Segmentation ,
- Uneven Illumination ,
- Typical Features ,
- True Positive ,
- Optical Tomography ,
- Digital Images ,
- Image Features ,
- Unsupervised Learning ,
- Digital Elevation Model ,
- Automatic Detection ,
- Binary Image ,
- Segmentation Results ,
- Reference Map ,
- Template Matching ,
- Panchromatic Image ,
- Spatial Feature Extraction ,
- Boundary Features ,
- Planetary Surface ,
- Earth Data ,
- Image Gradient ,
- Shape Reconstruction ,
- Global Optimization Techniques ,
- Post-processing Step
- Author Keywords