stretchlim

Find contrast stretching limits.

📝Syntax

limits = stretchlim(I)
limits = stretchlim(I, tol)

📥Input Arguments

Parameter	Description
I	Input grayscale or RGB image.
tol	Scalar tolerance or two-element tolerance vector in the range [0, 1].

📤Output Arguments

Parameter	Description
limits	2-by-N matrix of lower and upper contrast limits, with one column per channel.

📄Description

Find contrast stretching limits.

💡Examples

Stretch image contrast with computed limits

I=0.2+0.6*repmat(linspace(0,1,96),64,1);
limits=stretchlim(I);
J=imadjust(I,limits,[0;1]);
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('Adjusted');

🔗See Also

imadjust imhist

🕔Version History

Version	Description
2.0.0	initial version

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