How to measure destance between a line's points and a spacific point

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majd tahat 2018 年 6 月 2 日

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https://jp.mathworks.com/matlabcentral/answers/403693-how-to-measure-destance-between-a-line-s-points-and-a-spacific-point

編集済み: KALYAN ACHARJYA 2018 年 6 月 3 日

Hello, i am looking for a way to find the distance between A and the (B,C)edge. for example, if i have 50 pixels on (B,C)edge then it should returen 50 distance value. (the main problem is in defining (B,C)edge without taking other boundaries like (A,B) or (A,C)).

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Cedric 2018 年 6 月 2 日

編集済み: Cedric 2018 年 6 月 2 日

Can you assume that the edge BC is always defined by the first black pixel (vertically, in the downward direction) after which all pixels are black? If so, a basic FIND will identify the edge (using the 'last' option), and computing distances from row/col indices (using differences with row/col of point A) is trivial.