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how to pass a variable into imadjust?

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Manoj Kumar
Manoj Kumar 2014-12-18
回答： Geoff Hayes 2014-12-18
Hi,
I wish to pass the contrast limits in the imadjust using a variable.
I tried in this way but it didn't work. I'll get a value for lower contrast limit using a input dialog box.
lowerContrast=str2num(answer{1});
lowContLimit=sprintf('%d',lowerContrast);
imgadj=imadjust(imgreen,[lowContLimit,1],[]);
but i am getting an error as
Function imadjust expected its second input argument, [LOW_IN; HIGH_IN] to be a two-element vector.
Can anyone help me.
  2 个评论
Deepak M D
Deepak M D 2014-12-18
编辑：Deepak M D 2014-12-18
lowerContrast=str2num(answer{1});
lowContLimit=sprintf('%d',lowerContrast);
imgadj=imadjust(imgreen,[val1 val2]);
such that 0<= val1 <=1 and 0<=val2 <=1
and val1 < val2
Manoj Kumar
Manoj Kumar 2014-12-18
yes, the val1, val 2 lies between 0 and 1 and val1 is less than val2. Even then it is showing error?

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采纳的回答

Geoff Hayes
Geoff Hayes 2014-12-18
Manoj - why are you creating a string as
lowContLimit=sprintf('%d',lowerContrast);
and trying to pass that into the imadjust function? Try instead
imgadj=imadjust(imgreen,[lowerContrast 1],[]);
where you are passing in the lower contrast as a number (with 1 as the upper bound on the interval).

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