edge function

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john
john 2011-4-5
评论： Steven Lord 2017-5-11
Hello,
I want to make edgw detection with Laplacian zero crossing techniqus and I am using the following command [BW,threshold]=edge(img,’zerocross’,[],w); Does anybody know the exact syntax of this command?I think that I must use a filter in place of w.What kind of filter must be?
Thanks
  2 个评论
Alex Dashevsky
Alex Dashevsky 2017-5-11
Can you explain what "intensity" means ? What is stand for BW ? Black White ?
Steven Lord
Steven Lord 2017-5-11
BW is the first output from the edge function in Image Processing Toolbox. The first sentence in the Description describes the significance of 1's and 0's in BW.
See this documentation page, also in the Image Processing Toolbox documentation, for a description of what intensity means in the toolbox.

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回答（1 个）

the cyclist
the cyclist 2011-4-5
Have you tried reading the documentation: "doc edge"?
If that is not descriptive enough for your needs, you can look at the actual guts of the function by using "edit edge". (But be careful not to make changes and overwrite the file.)

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