Tag: Remote sensing
Seamless Aerial Photograph Mosaic
Sample of an seamless 1:10000 scale color aerial photograph mosaic of Halifax, Nova Scotia that I generated using PCI OrthoEngine software to seamlessly combine seven individual ortho photos into 1 image.
Remote Sensing
Remote sensing involves the use of technical instruments or sensors to record reflected or emitted energy and then processing, analyzing, and applying that information to determine the spectral and spatial relations of distance objects and materials. …
Digital Terrain Modeling – Aspect models
In digital terrain modeling the Aspect of a surface refers to the azimuth to which a slope is orientated. The aspect or orientation of a slope can produce very significant influences on it, so it is important to know the aspect of the plane as well as the slope.Together the slope combined with the aspect of the surface can virtually define the surface plane completely in digital terrain modeling
Example of an Aspect Map
This image is an Aspect Model that I derived from a digital elevation model (DEM) of Lismore, Nova Scotia. The aspect values of the slopes of the DEM are represented in the model by a 0-255 grey scale color ramp. Click here to learn a little more about Aspect Models and how the image below was created.
Slope
The slope or the gradient of a straight line within a Cartesian coordinate system is known as the measure of how steep a line is relative to the horizontal axis. In terrain modeling we generally model an entire surface and not just one line so we need to calculate the slope of a best fit surface plane (which is made of lines). Together the slope combined with the aspect of the surface can virtually define the surface plane completely.
Example of a Slope Map
The image here is a Slope Model that I derived from a digital elevation model (DEM) of Lismore, Nova Scotia.
Comparative Analysis of Principle Component, IHS and Averaging Methods
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A poster from a Data Integration presentation about Comparative Analysis of Principle Component, IHS and Averaging Methods that I gave back at COGS for an advanced image processing class.
