Community Profile # Balaji M. Sontakke

61 total contributions since 2016

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Question

Sir, I have calculated feature of dorsal hand vein using eiganvalue algorithm, features are stored in feature variable in following code this is for a single image i want to do the same operation on 10 images the how i can?
%% Detect feature points and show the 50 strongest ones by eiganvalue algorithm % Find Corner Points Using the Eigenvalue Algor...

7 months ago | 2 answers | 0

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Question

How to calculate ROC Cureve with following value
FAR, FRR, Accuracy, EER, Threshold 9.807...

7 months ago | 0 answers | 0

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Question

Following is the error while calculating FAR FRR
Please see the attachment herewith of my program, cosine distance is calculated or not I dont understand beca...

7 months ago | 0 answers | 0

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Question

Following is the error while calculating cosine distance
Following is the error while calculating cosine distance.... Conversion to cell from double is ...

7 months ago | 1 answer | 0

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Question

Error while calculating Cosine distance
Following is the error while calculating Cosine distance.... Subscripted assignment dimension mismatch. Error in C...

11 months ago | 1 answer | 0

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Question

Error in extract_db (line 47) file_a = extractAfter(char(file_a), 0, strfind(char(file_a), '_')-2);
'101_1.tif' '101_2.tif' '101_3.tif' '101_4.tif' '101_5.tif' '101_6.tif' '101_7.tif' '101_8.tif' '102_1.tif' '102_2.tif' '102_3.t...

12 months ago | 1 answer | 0

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Question

Undefined function 'substring' for input arguments of type 'char'. Error in extract_db (line 45) file_a = substring(char(file_a), 0, findstr(char(file_a), '_')-2);
What is the substitute function to evaluate file_a = substring(char(file_a), 0, findstr(char(file_a), '_')-2); because this fun...

12 months ago | 1 answer | 0

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Question

Getting recognition rate 3.25 only. How to improve recognition rate?
After applying test and training sets with Euclidean distance, I am getting a recognition rate of 3.25 in my program. How do I...

1 year ago | 0 answers | 0

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Question

Error using svmtrain (line 234) Y must be a vector or a character array.
Error using svmtrain (line 234) Y must be a vector or a character array.

1 year ago | 0 answers | 0

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Question

Following is the error in my program while calculating ROC
I have attached my program files Index exceeds matrix dimensions. Error in ROC (line 16) selfVerification(i) ...

1 year ago | 0 answers | 0

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Question

Where to make change in my program to get output like figure 2
I have calculated the Euclidean distance of matrix but am not getting correct ROC-like in fig 2. I have attached my program ...

1 year ago | 0 answers | 0

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Question

how to store values in second column of cell array
In the following program, I get the value 200 X 1 after reshaping function, I want to store ground truth a label like 1 1 1 1 1 ...

1 year ago | 1 answer | 0

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Question

how to store data in cell array
I have 40 folders and each folder having 10 images, I have written one program for reading first five images from 40 fold...

1 year ago | 1 answer | 0

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Question

How to find the threshold value from KNN classification
Hi all, I want to ask that I have total 100 classes [1,2,3,4,5......100] One class having 12 samples from which 8 sample...

1 year ago | 0 answers | 0

### 0

Question

Following is the error in my program
Index exceeds matrix dimensions. Error in threshold (line 13) correctMinimum(j) = allMinimum(i); Error in kn...

1 year ago | 0 answers | 0

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Question

#false positive rate,fpr= FP/(TN+FP) OR fpr=1-specificty, tpr=sensitivity y_pred_knn_p =knn.predict_proba(X_test)[:,1] ...

1 year ago | 1 answer | 0

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Question

Sir, how to calculate EER equal error rate for the following data
respected sir, I have used following formula for calculating false acceptance rate FAR and FRR FAR=FP/(FP+TN) FR...

1 year ago | 1 answer | 0

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Question

what should be the program for following output?
Sr.no Threshold TP TN FP FN FAR FRR GAR 1 0 0 100 0 100 0 1 0 2 0.1 19 100 0 81 0 0.81 19 3 0.15 62 99 1 38 0.01 0.38...

1 year ago | 1 answer | 0

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Question

Error in following code while converting cell to matrix
Error in following code Error using cell2mat (line 52) CELL2MAT does not support cell arrays containing cell arrays or obje...

1 year ago | 2 answers | 0

### 2

Question

Sir, am having the four mat files, which of two contains features from minutie and other two contains feature from invarient moment, can i make fusion of those features by combining it then how?
Sir, am having the four mat files, which of two contains features from minutiae and other two contains feature from invariant mo...

1 year ago | 1 answer | 0

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Question

How to compute & plot Equal Error Rate (EER) from FAR/FRR values using matlab
I have the following values against FAR/FRR of 20 classes. i want to compute EER rates and then plot in matlab. FPR ...

1 year ago | 0 answers | 0

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Question

Error in HeatMap, In following code confusion matrix is plotted but i want to visualize the same using a heat map, what is wrong?
Error using HeatMap/set Invalid parameter/value pair arguments. Error in HeatMap (line 392) set(obj, pvPairs{:}...

1 year ago | 0 answers | 0

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Question

sir, what is required to denoise the attached image, i tried with following code but still some noise is there
clc; close all; %% %roiFolder = 'E:\MATLAB\R2016b\bin\img\PCA\my_PhD_Programs\Jermanfilter\dbROI'; %filePattern = fullfile(m...

1 year ago | 0 answers | 0

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Question

error in knn classification train accuracy is 96.33% but test accuracy is only 7.33%, is this overfitting problem.
error in knn classification train accuracy is 96.33% but test accuracy is only 7.33%, is this overfitting problem. how to solve ...

1 year ago | 0 answers | 0

### 0

Question

Error while calling reshape
Following is a cell array having size 1 X 180, is it possible to reshape this cell array size into 6*4, here 6 is column in one ...

1 year ago | 0 answers | 0

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Question

error in attached program
Index exceeds matrix dimensions. Error in ext_vein (line 381) dist_m = dist2(minutiae(:,1:2), minutiae(:,1:2)); Error...

1 year ago | 1 answer | 0

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Question

regionprops function retrieving only small vein line instead of total vein pattern
clc; clear all; chart = imread('202.bmp'); chart = gray2rgb(chart); bw = im2bw(imcomplement(rgb2gray(chart))); imsho...

1 year ago | 0 answers | 0

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Question

Not getting correct vein pattern from image after mophological operation
Sir, in attached image is output of some morphological operation but still some unwanted region is present how to remove this. ...

1 year ago | 0 answers | 0

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Question

which morphological operation is needed for best vein pattern imaging on attached image
sir, I apply some morphological operation but a lot of small wholes are getting and bifurcation of veins not seen in the image

1 year ago | 0 answers | 0

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Question

error while calculating minutie..
I have Binary hand vein image (attached here) of size 60 X 60, i try to extract minutie from this binary image with following pr...

1 year ago | 0 answers | 0