I had an fingerprint image, i want to make the fingerprint in the image white and the background black how to do that ?

I mean FingerPrint masking as mentioned in the image.

Answer 1

[Akira Agata]

Using bwconvhull function, you can create fingerprint masking image. Here is an example.

% Read image
I = imread('1_1.jpg');

% Binarize
Igray = rgb2gray(I);
BW = imbinarize(Igray);

% Create mask
BWmask = bwconvhull(~BW);

% Show the result
imshowpair(I,BWmask,'montage')