0

how to change window/level of displayed image

asked 2013-03-12 05:30:08 -0600

joker
1

Hi,

Default display of an arbitrary image is not always a best fit, as all grey levels are automatically displayed, image may appear as dark grey. Therefore before display, image should be "filtered" by setting to 0 all values below min val of that window, setting to max all values above that window, and re-sampling/re-interpolating all the values inside the window.

Is there any built-in function to change windowing of displayed image? If not - what function could be used prior display to apply the windowing filter above.

Thanks.

edit retag flag offensive close merge delete

1 answer

Sort by » oldest newest most voted

0

answered 2013-03-12 05:48:23 -0600

StevenPuttemans

flag of Belgium

20029 ●16 ●82 ●207 http://stevenputtemans...

I guess the threshold algorithms proposed here could help you out:

http://docs.opencv.org/modules/imgproc/doc/miscellaneous_transformations.html

The threshold function applied twice could do exactly what you want. Just convert your 2D image structure to a single row vector first.

edit flag offensive delete link

Comments

Could you explain how to do it?

Artem.s ( 2015-04-23 11:01:38 -0600 )edit

There are tutorials to explain how to do it. For thresholding it is this one!

StevenPuttemans ( 2015-04-24 02:31:30 -0600 )edit

Links

Question Tools

Stats

Asked: 2013-03-12 05:30:08 -0600

Seen: 2,505 times

Last updated: Mar 12 '13

Related questions

Copyright OpenCV foundation, 2012-2018. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.

Powered by Askbot version 0.10.2

here is how