CODEWITHSUNDEEP
c++opencvhistogram
user3622923
user3622923

Reputation: 9

Opencv minMaxLoc parameters

I don't understand what parameter of minMaxLoc expresses or means the color. parameters: maxVal – pointer to the returned maximum value; NULL is used if not required. maxLoc – pointer to the returned maximum location (in 2D case); NULL is used if not required.

Is it maxVal or maxLoc??

Upvotes: 0

Views: 1776

Answers (1)

Rook
Rook

Reputation: 6155

This sentence seems suspicious:

I don't understand what parameter of minMaxLoc expresses or means the color

reading the docs, I see the phrase

The functions do not work with multi-channel arrays

This means single channel (eg. greyscale) only. The docs do also suggest ways in which a colour image may be altered to a single channel.

Anyway, as regards the parameters: maxVal is the actual value of the image at the maximum point. maxLoc is the location of that point. Sounds like you want maxVal. If you were expecting some sort of RGB value, then you evidently missed the important bit of the docs that I repeated above.

Upvotes: 2

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