Steve on Image Processing

Results for: Continental divide

Locating the US continental divide, part 7 – Putting it all together

Posted by Steve Eddins,

Locating the US continental divide, part 7 – Putting it all together  Today is the final post in my continental divide series. In earlier posts I have used the problem of computing the US continental divide as a vehicle for exploring data import, image display scaling, the watershed transform, label matrices, local and regional... read more >>

Locating the US continental divide, part 6 – Final computation and visualization 6

Posted by Steve Eddins,

Locating the US continental divide, part 6 – Final computation and visualization  Today's post in my continental divide series demonstrates the final computational step and shows one procedure for visualizing the Pacific and Atlantic catchment basins. In my previous post, I modified the DEM (digital elevation model) data set so that its only regional... read more >>

Locating the US continental divide, part 5 – Minima imposition

Posted by Steve Eddins,

Locating the US continental divide, part 5 – Minima imposition  Today, in part 5 of my series on computing the US continental divide, we'll look at a technique called minima imposition. Previously we looked at data import and display, the watershed transform and label matrices, different kinds of minima, and manipulating binary... read more >>

Locating the US continental divide, part 4 – Ocean masks

Posted by Steve Eddins,

Locating the US continental divide, part 4 – Ocean masks  Welcome to part 4 of my series on computing the US continental divide. Previously we looked at data import and display, the watershed transform and label matrices, and different kinds of minima. Today we're going to use... read more >>

Locating the US continental divide, part 3 – Regional minima

Posted by Steve Eddins,

Locating the US continental divide, part 3 – Regional minima  In the previous post in this series on computing the US continental divide, we used the watershed function to find catchment basins in a DEM (digital elevation model). The result was more than half a million catchment basins, most of which were... read more >>

Locating the US continental divide, part 2 – Watershed transform 1

Posted by Steve Eddins,

Locating the US continental divide, part 2 – Watershed transform  This post is the second in my series on computing the location of the US continental divide. Today I'm going to look at the watershed transform, including how to compute and visualize it using the Image Processing Toolbox functions watershed and label2rgb. ... read more >>

Locating the US continental divide, part 1 – Introduction 23

Posted by Steve Eddins,

Locating the US continental divide, part 1 – Introduction  Today I'm introducing a series on computing the location of the US continental divide. (I was inspired to tackle this topic by Brian Hayes' blog post on the divide; thanks very much to Mike and Ned for sending me the link.) ... read more >>

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