Binary image conversion from real image

Hi,

I intend to obtain the binary image. The intensity values of real image (varies from 0 to 4096) stored in the matrix, let's say 'h' . I tried to obtain the binarized images with the follwoing code, but I got some wierd image.. Do I need to play with the thresold ??.. In my binarized image, I am seeing any subject, instead it's just blank / white image..

BW = imbinarize(h,'global');
imshow (BW);

Answer 1

[Subhadeep Koley]

Hi, imbinarize expects pixel values of data type double and single to be in the range [0, 1]. We should use the rescale function to adjust pixel values to the expected range.

% Load the original image
load h.mat

% Rescale "h" to adjust its pixel values in [0,1]
h = rescale(h);

% Binarize "h"
BW = imbinarize(h, 'global');

% Visualize results
figure
imagesc([h,BW])
axis image off
title("Original Image   |   Binarized Image")

[Turbulence Analysis]

Thanks, It serves the purpose..

Answer 2

[Matt Gaidica]

Are you perhaps looking for:

BW = im2bw(h);