Imhist func not working for a user made matrix!!

2018 2 18
2 个回答
更新时间：2018 2 20
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0 个投票

I need to do a basic operation in a window of an image.I defined a matrix(as a given window.)now i want to find it's histogram..the value x and y ([x y]=imhist(matrix))are not what one would expect if it would have been an image.

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Matt J
Matt J 2018-2-18
Maybe your expectations are wrong?
Pritisman Kar
Pritisman Kar 2018-2-19
No the thing is that it's binlocation are getting normalised but frequency of a bin location(which must be an integer)is being displayed as x.so only 0 and 1 binlocation is displayed.
Jan
Jan 2018-2-19
@Pritisman Kar: Please post the code, some example input data and explain your expectations. Currently your question is not clear.

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回答（2 个）

Walter Roberson
Walter Roberson 2018-2-20

0 个投票

Your synthetic matrix has values greater than 1 but it is class double, because you did mathematical calculations on uint8 values in the range 0 to 255 that are not defined for uint8 so you had taken double() of your uint8 data. But you forgot that you need to uint8() back afterwards before image processing.

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