Determine min & max intensity value from histogram.

2012 10 15
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How do you determine the minimum and maximum intensity value from looking at the histogram?

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Walter Roberson
Walter Roberson 2012-10-15

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The minimum intensity value is somewhere in the range covered by the first bin with a non-zero count. The maximum intensity value is somewhere in the range covered by the last bin with a non-zero count. You cannot determine the precise values unless your inputs were quantized and your bins hold only a single quantum (e.g., distinct integers.)

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Esther
Esther 2012-10-15
what does non-zero count means?
Image Analyst
Image Analyst 2012-10-15
[counts binValues] = hist(yourArray, numberOfBins);
minBinValue = find(counts>0, 1, 'first');
maxBinValue = find(counts>0, 1, 'last');

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Esther
Esther
2012-10-15

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