how i create a 7 images database and compare with a input image and also save it in a.mat file

% BUILDING FINGERPRINT MINUTIAE DATABASE

% Usage: build_db(ICount, JCount);

% Argument: ICount - Number of FingerPrints

% JCount - Number of Images Per FingerPrint

[Image Analyst]

Do you mean with the Database Toolbox?

[indrani dalui]

actually sir i don't know how to creat database in matlab.so i don't know what would i have used.i download a code from matlab .when i input a image and compare then its compare with the image from db.mat.but .if i am store my image file with the name and put the image on the file.but when i compared the image it shows the result with input image and previously sored image.sir code is attached herewith.please guide me what should i do.

%% GET FEATURES OF AN ARBITRARY FINGERPRINT FROM THE TEMPLATE AND MATCH IT WITH FIRST ONE
load('db.mat'); i=1;
second=['10' num2str(fix((i-1)/8)+1) '_' num2str(mod(i-1,8)+1)];
disp(['Computing similarity between ' filename ' and ' second ' from FVC2002']);
S=match(ffnew,ff{i},1);

[Image Analyst]

Not sure what all that is, but to see if two images match completely, you can use isequal(image1, image2).

Answer 1

[Mrutyunjaya Hiremath]

% ICount -  Number of FingerPrints
% JCount -  Number of Images Per FingerPrintICount=7;
ICount = 7;
JCount = 7;
p=0;
for i=1:ICount
    for j=1:JCount
        filename1=['10' num2str(i) '_' num2str(j) '.jpg'];
        img = imread(filename1); % Example: image file name 101_1.jpg, 101_2.jpg .... 102_1.jpg ...
        p=p+1;
        if ndims(img) == 3;
            img = rgb2gray(img);
        end % colour image
        disp(['extracting features from ' filename1 ' ...']);
        ff{p} = extractFeatures(img); %User defined function, return single row Minutiae features
    end
end
save('db.mat','ff');% save Minutiae to Database

[indrani dalui]

sir,whenever i seve the mat file .it shown the error like

save('db1.mat','ff')
Error using save
Variable 'ff' not found.

[indrani dalui]

whene i run the main code is shows the error like this .i attached my main file herewith

Extracting features from sample_1.tif 
 >>> enhancement done.
 >>> making mask done.
 >>> finding minutiae done.
 >>> filtering false minutiae done.
Error using load
Unable to read file 'db1.mat'. No such file or directory.

Error in main_single (line 11)
load('db1.mat'); i=1;
 
>> 

[Mrutyunjaya Hiremath]

@ indrani dalui

that means you haven't created 'db1.mat' .

according to your attached file 'main_single.m', you need to run line no 16.

% build_db1(6,1); %THIS WILL TAKE ABOUT 30 MINUTES

use the attached file, if you don't have.

[indrani dalui]

Dear sir,

How to load that 'db1.mat'file ?it is automecatilly load in workspace?

[Mrutyunjaya Hiremath]

load('db1.mat');

using this command it will load its saved variable 'ff' in workspace.

because in build_db1.m we used

save('db1.mat', 'ff');

for more infor,ation refer here load and save

[indrani dalui]

how to chose the the file directory to save it or lode it.again it shown the result like

>> load('db1.mat');

Error using load

Unable to read file 'db1.mat'. No such file or direc

[Mrutyunjaya Hiremath]

@ Indrani

Comment line no 11 and Uncomment line no 16 in your 'main_single.m' file.

It will work. Same thing done in the attached file.

But I think, you are not trying.

[indrani dalui]

sir,

only this line i would run in commend window ...save it also in same process?

load('db1.mat');

[indrani dalui]

mat file not create in my current directory.what should i do first..sir i tried but it's not working sir.sir please help.

[Image Analyst]

Use fullfile() to create the name using the other folder it's in:

folder = 'c:/users/indriani/document/whatever';
fullFileName = fullfile(folder, 'db1.mat')
s = load(fullFileName)

Answer 2

[Mrutyunjaya Hiremath]

Hello Indrani,

the code you are using has sepecific format for finger print file reading. you are using dataset DB1 from 'FVC2002'. This contains file name as 101_1.tif, 101_2.tif, 101_3.tif, ..... 101_8.tif, 102_1.tif, ..... 110_7.tif, 110_8.tif. for that reson below format is used.

second=['10' num2str(fix((i-1)/8)+1) '_' num2str(mod(i-1,8)+1)];

if you are using you own dataset with diffent file syntax, then this wont work.

I have changed made some changes in 'main_single_new.m' and 'build_db1.m'.

used matlab command uigetfile in main_single_new and uigetdir in build_db1().

Place those two file in you folder 'Simple_FingerPrint_Matching' and run 'main_single_new.m'

And one more in build_db1.m file formats I used is '.tif'.

[indrani dalui]

Dear sir,

i just put directory and file name in new file and i attached herewith.Now what should i do sir.please guide me.

[Mrutyunjaya Hiremath]

According to your files

All images ment for training are placed in 'D:\1\FVC2002\DB1_B'

And test image you placing in the folder, 'D:\1'

I have made some changes in line no 4 and 14 in 'main_single_new.m'

and line no 3 and 5 in 'build_db1.' in attached files.

[indrani dalui]

Dear sir,

whwnever i run 'main_single_new.m' file the out put shown like this.but i want first input a image then its enhancement ,making mark,finding mainutiae then filtering false minutiae this all process done then computing similiraty between input image and all database image and last shows the Matched_FigerPrints.

extracting features from D:\1\FVC2002\DB1_B\sample_1.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_2.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_3.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_4.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_5.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_6.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_7.tif ...
Extracting features from D:\1\sample_1.tif 
 >>> enhancement done.
 >>> making mask done.
 >>> finding minutiae done.
 >>> filtering false minutiae done.
Warning: Escaped character '\s' is not valid. See 'doc sprintf' for supported special characters. 
> In main_single_new (line 32) 
Computing similarity between D:1
Warning: Escaped character '\s' is not valid. See 'doc sprintf' for supported special characters. 
> In main_single_new (line 32) 
Computing similarity between D:0.26997
Warning: Escaped character '\s' is not valid. See 'doc sprintf' for supported special characters. 
> In main_single_new (line 32) 
Computing similarity between D:0.32898
Warning: Escaped character '\s' is not valid. See 'doc sprintf' for supported special characters. 
> In main_single_new (line 32) 
Computing similarity between D:0.29716
Warning: Escaped character '\s' is not valid. See 'doc sprintf' for supported special characters. 
> In main_single_new (line 32) 
Computing similarity between D:0.31497
Warning: Escaped character '\s' is not valid. See 'doc sprintf' for supported special characters. 
> In main_single_new (line 32) 
Computing similarity between D:0.31701
Warning: Escaped character '\s' is not valid. See 'doc sprintf' for supported special characters. 
> In main_single_new (line 32) 
Computing similarity between D:0.34017

Matched_FigerPrints =

     1

[Mrutyunjaya Hiremath]

All is good, except warning.

In line no 32, we are using fprintf. And '\s' is escape charecter. File path name is: 'D:\1\sample_1.tif'

we can use 'fileparts' to get just file name to display like 'sample_1.tif'

use the attached file.

[indrani dalui]

sir ,i want a compute similirity between a destroted image from a database image .so sir what should the percentage to compute a similaraty to find the image.

extracting features from D:\1\FVC2002\DB1_B\sample_1.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_2.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_3.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_4.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_5.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_6.tif ...
extracting features from D:\1\FVC2002\DB1_B\sample_7.tif ...
Extracting features from D:\1\Thumb sample 1 VCS.tif 
 >>> enhancement done.
 >>> making mask done.
 >>> finding minutiae done.
 >>> filtering false minutiae done.
Computing similarity between Thumb sample 1 VCS and sample_1.tif from FVC2002 : 0.32749
Computing similarity between Thumb sample 1 VCS and sample_2.tif from FVC2002 : 0.44096
Computing similarity between Thumb sample 1 VCS and sample_3.tif from FVC2002 : 0.40535
Computing similarity between Thumb sample 1 VCS and sample_4.tif from FVC2002 : 0.40305
Computing similarity between Thumb sample 1 VCS and sample_5.tif from FVC2002 : 0.36102
Computing similarity between Thumb sample 1 VCS and sample_6.tif from FVC2002 : 0.36336
Computing similarity between Thumb sample 1 VCS and sample_7.tif from FVC2002 : 0.36824

Matched_FigerPrints =

  0×1 empty double column vector

si i want match the finger number rather "0×1 empty double column vector" this line

[indrani dalui]

sir, i have a fingerprint image ,in this image i apply visual cprotrograpy after applied this the image is destroted bt when i using vc image to match my database image ...the same fingerprint image not showing the similer image..what should i do in this case ..i attach same image one is fresh and another is after applied visual criptography.

attached file tif.zip is fresh fingerprint image and vcssample.zip fingerprint of visual criptrography images

[Mrutyunjaya Hiremath]

There are 3 missing points here.

1. Visual Cryptography - Encrypted data. If you want to match, Decrypt it before Matching.
2. Visual Cryptography - usually have multiple share images.
3. The shared VCSSsmple images are double in width (NOT properly encrypted).

Refer It, Simple animated Image : https://en.wikipedia.org/wiki/Visual_cryptography