Home/ Questions/Q 9311059
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-19T01:16:10+00:00

HI all I am new to Matlab Image Processing toolbox, I really cannot decide

  • 0

HI all I am new to Matlab Image Processing toolbox, I really cannot decide to use between 

im2bw(gray_image, level); 
gray_image < 0.5; ?

for im2bw(gray_image, level); level we can use the the value 0.5 or other value too?

Could anyone please explain me, If I want to Threshold a gray image, which one is better if I want to adjust the threshold level myself ?

If it is the same please kindly tell me thank…

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    As the im2bw documentation says:

    Specify level in the range [0,1]. This range is relative to the signal levels possible for the image’s class. Therefore, a level value of 0.5 is midway between black and white, regardless of class

    This makes it slightly more flexible/convenient than image < level; depending on how you obtained the image, the values might be in the range 0-255, in which case your alternative would not give the desired result. Otherwise they are equivalent.

    • 0