HSV value of a RGB pixel

asked 2015-09-23 02:46:55 -0500

sarjoondeen gravatar image

updated 2015-09-23 02:47:55 -0500

  1. Original.jpg

  2. HSV.jpg

The first image is the orginal BGR image and second (HSV.jpg) is the HSV color converted image

I opened the original image in GIMP editor and I checked the coordinate (300,300) and in that coordinate following values I found B:74 G:70 R:75 H:312 S:7 V:29

Then the same coordinate (300,300) when I checked in HSV converted image (HSV.jpg) I didn't find these "312,7,29" HSV values instead I found its RGB value.

I know that opencv doesn't display as HSV values, but then through what ways I will be able to get the HSV value of that particular coordinates(300,300) RGB pixel.

I thought conversion of BGR2HSV will do that and will give that values(312,7,29) but it didn't give those values Please help me understand with this.

Thanks in Advance Sarjoon.

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Comments

4

I think your answer is here

LBerger gravatar imageLBerger ( 2015-09-23 03:28:06 -0500 )edit
2

Check out the answer here, which will display BGR value and corresponding HSV value http://answers.opencv.org/question/30...

And if you want to segment the object then the answer here might be helpful http://answers.opencv.org/question/28...

Haris gravatar imageHaris ( 2015-09-23 04:20:36 -0500 )edit
4

also, since H has to fit into a [0..255] byte in opencv, the value is divided by 2, so in the [0..180] range, thus your example hsv values would be (156,7,29) in opencv

berak gravatar imageberak ( 2015-09-23 04:29:11 -0500 )edit

Thanks for the answers.. I understood how it works in Opencv.. Cheers :)

sarjoondeen gravatar imagesarjoondeen ( 2015-09-24 06:51:01 -0500 )edit