crazy float number from image pixels [closed]

asked 2014-09-08 11:31:39 -0600

curtis newton gravatar image

hello,

I am trying to get pixels values from an image

if I use this line : Vec3b col = imageSource.at<vec3bf>(kp.y, kp.x); I get regular color bytes values

If I use shis one : Vec3f col = imageSource.at<vec3f>(kp.y, kp.x); rgb values are like 1.1234e36 or something

so I would expect values from 0.0 to 1.0 or 0.0 to 255.0 but e+36 ??

I'll go for the bytes version, but the float seemed neat as they are intended for opengl colors floats

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Closed for the following reason the question is answered, right answer was accepted by sturkmen
close date 2016-01-17 18:13:37.567860

Comments

1

Vec3f <--> Vec3f .... you see the mismatch ?

only one of them can be valid at the same time.

if img.type() == CV_8UC3 , then Vec3b, if img.type() == CV_32FC3 , then Vec3f.

use imageSource.convertTo(imageDest, CV_32FC3); to get a float img.

berak gravatar imageberak ( 2014-09-08 11:40:57 -0600 )edit

ok I missed that reading the doc thx

curtis newton gravatar imagecurtis newton ( 2014-09-08 14:09:37 -0600 )edit
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