How can i change places to pixel values(black ones to white, white ones to black) of binary image?

Hello,

How can i change black pixels to white and white pixels to black of my image?

I am trying this code but i get an error

I = imread('Deneme_10.png');

Igray=rgb2gray(I);

BW=imbinarize(Igray);

BW2 = imfill(BW,'holes');

BW3 = bwareaopen(BW2,8000);

BW3(BW3==0)=1 && BW3(BW3==1)=0;

Answer 1

[Athul Prakash]

Hey Zuy,

I don't think you can concatenate statements in matlab using '&&' - that is a logical operator, the kind that is used mostly within an if condition. I presume that the error you are receiving is related to that; please try to post the actual error message when you ask a question on the community so that we can understand your problem better. This should increase your chances of getting a response manifold, in my experience.

Here's a solution you can try out:

You need to use a copy of the image before changing colors, otherwise you'll be overwriting the first change when you make the second one, and produce all 0's (or all 1's).

% 'I' hold the binarized image.
temp = I;
I(temp==1)=0;
I(temp==0)=1;

Hope it Helps!

[Athul Prakash]

Alternatively, you may use the imcomplement function. Please read the doc below:

https://in.mathworks.com/help/images/ref/imcomplement.html

[Zuy]

Thanks a lot!