max and min values in a Mat

ati
131 ●2 ●3 ●7

Hi..How do I get the max and min value in a Mat? Is there any function in Opencv which return these two values?

Guanta
6736 ●6 ●25 ●79

Usage:

double min, max;
cv::minMaxLoc(your_mat, &min, &max);

The function can also give you the location of the min and max-values:

cv::Point min_loc, max_loc
cv::minMaxLoc(your_mat, &min, &max, &min_loc, &max_loc);

Comments

is there any way to do this for a float? or do i have to write my own?

Don't worry, you can use the function also for float matrices, just the result will be always double (which you can then cast to float).

Guanta (May 3 '15)edit

@Guanta, I had tried the code to get the location in a mat for the min and max for the array and the result is like this... What does this mean?

00000000002DF458 00000000002DF438

Thanks

zms (Dec 10 '15)edit

@Guanta, I had tried using the code to look on the max and min location. I got these answers. Can I know what is this mean?

00000000002DF458 00000000002DF438

Thanks

zms (Dec 10 '15)edit

Probably you print the points wrongly.

Guanta (Dec 11 '15)edit