Minimum distance between two Irregular forms

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mohammed alany 2019 年 3 月 31 日
コメント済み: mohammed alany 2019 年 4 月 1 日
WHAT is the min distance between these two shapes?
note: i know the connecting points of big figure.

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Image Analyst 2019 年 3 月 31 日

If you have the stats toolbox, try this:
distances = pdist2(xyShape1, xyShape2)
minDistance = min(distances(:))
[minRows, minColumns] = find(distances == minDistance)
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Walter Roberson 2019 年 4 月 1 日
[minDistance, minColumns] = min(distances);
Note: you might need min(distances,2) depending on whether you need the minimum distance from each point in the first to any point in the second, or the minimum distance from each point in the second to any point in the first.
When you do a single min() call and the try to use find(), then that could be appropriate for the case where one point might happen to be exactly the same minimum distance to two more or points in the other shape, and you need to know all of them. In a situation such as that, you would generally get a different number of minimum points for each, which is a bit tricky to represent in a rectangular numeric matrix. Is this the situation that applies for you, that you need to know all of the points that are the same minimum distance? If so then typically a loop would be easiest.
mohammed alany 2019 年 4 月 1 日
many thanks, now it's work correctly.

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