imbothat

Bottom-hat filtering of an image.

📝Syntax

J = imbothat(I, SE)

📥Input Arguments

Parameter	Description
I	Input grayscale image.
SE	Structuring element structure or logical neighborhood.

📤Output Arguments

Parameter	Description
J	Bottom-hat filtered image.

📄Description

Bottom-hat filtering of an image.

💡Examples

Apply bottom-hat filtering

I=ones(64,64); I(20:44,20:44)=0.6; I(30:34,30:34)=0;
J=imbothat(I,strel('disk',5));
figure; subplot(1,2,1); imagesc(I); g=linspace(0,1,64)'; colormap([g g g]); title('Input');
subplot(1,2,2); imagesc(J); g=linspace(0,1,64)'; colormap([g g g]); title('Bottom-hat');

🔗See Also

imtophat imclose strel

🕔Version History

Version	Description
2.0.0	initial version

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