Most biological approaches to disparity extraction rely on the disparity energy model (DEM). In this paper we present an alternative approach which can complement the DEM model. This approach is based on the multiscale coding of lines and edges, because surface structures are composed of lines and edges and contours of objects often cause edges against their background. We show that the line/ed...

Digital Elevation Models (DEMs) play a prominent role in glaciological studies for the mass balance of glaciers and ice sheets. By providing a time snapshot of glacier geometry, DEMs are crucial for most glacier evolution modelling studies, but are also important for cryospheric modelling in general. We present a historical medium-resolution DEM and orthophotographs that consistently cover the ...

The spatial uncertainty of a topography based rainfall runoff model (TOPMODEL) is addressed in this study to assess its variability in simulating watershed hydrologic response with regards to the change of digital elevation model (DEM) resolution. Twelve DEM realizations of different grid sizes ranging from 30 m to 3000 m for each of two case watersheds are used for comparative examinations. Th...

With the aim of probing for design theory of cutterhead excavation system of earth pressure balance (EPB) machine, the parameters representing the system performance are concluded firstly. Then a 3D model for cutterhead excavation system of EPB machine is presented with the discrete element method (DEM) software PFC, which is capable of simulating the tunneling ground in site, the machine struc...

The Japan Aerospace Exploration Agency (JAXA) has produced the world's first 10m resolution L-band SAR global mosaic datasets. These data sets were generated to monitor forest changes from the 1990s to present time. SRTM-3 (90m resolution) DEM was used for correct for terrain-induced SAR image variations and for ortho-rectification. Both corrections were applied for geometric and radiometric ca...

Investigating the interactions of granular fertilizers with various types equipment is an essential part agricultural research. A numerical technique simulating mechanical behavior assemblies has advantage data trackings, such as trajectories, velocities, and transient forces particles at any stage test. The interaction parameters were calibrated to simulate responses in EDEM, a discrete elemen...

Granular materials are abundant in nature, and most industries, either the initial constituents or final products granular form during a production processing stage. Industrial processes equipment for handling of bulk solids can only be improved if we understand, model predict material behaviour. The discrete element method (DEM) is numerical tool well-suited this purpose has been used by resea...

Digital Elevation Model (DEM) is an important input for geo-spatial analysis. For various applications like flood management, ortho rectification of remote sensing images, navigation, architectural works, defence, etc., high resolution DEM is required. TanDEM-X mission was launched in 2010 to obtain high resolution global DEM with HTRI-3 standard. SAR interferometry (InSAR) technique is used fo...