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With aircrafts' growing need for Autonomy of the navigation systems, Inertia/image matching assistant navigation system, as one of the most suitable systems in the country, has received increasing requirements for application. Traditional varifocal mechanisms in navigation system, however, have shortages like comparatively long zooming time, large occupation of room, low control accuracy, and as a...
By reason of the convenient obtaining of wood stereogram images, it's suitable for us to apply them to the application of wood recognition. In order to extract features from the wood stereogram images, gray level co-occurrence matrix (GLCM) was used to statistic texture features. Under the image resolution of 100*100, four directions, i.e. 0°, 45°, 90°, and 135°, were severed as the generated pixel...
The research of tree-rings helps us to understand the local climate change, pollution, etc. in that time, but also to identify the wood species. The detection of tree-rings boundary is a prerequisite for the computer to automatically obtain information about tree-rings. A new approach based on mathematical morphology to achieve tree-rings boundary from micro-images of wood on cross-section is presented...
Rapid land use change has taken place in many mega cities of China such as Beijing over the past two decades. In this paper, land use change dynamics were investigated by the combined use of satellite remote sensing, geographic information systems (GIS). The results indicated that there had been a notable and uneven urban growth and a major loss of cropland loss between 1986 and 2001. Most of the...
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