# K M Ibrahim Khalilullah

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**Content Feed**

Question

How can I convert 3d MRI data (128x128x27) into 4d (128x128x1x27) for visualization using montage?

I am going to visualize my mri data using the tutorial: https://www.mathworks.com/help/images/exploring-slices-from-a-3-dimensi...

25 days ago | 2 answers | 0

### 2

answersQuestion

How many ways are generally used for image segmentation using only Image processing?

I want to segment an image using image processing (without using machine learning). How many ways are used for segmentation? gen...

3 years ago | 1 answer | 0

### 1

answerQuestion

Object oriented programming problem?

I writing a program using object oriented programming in matlab 2016b. The program gives the following error: Error using MyP...

3 years ago | 2 answers | 0

### 2

answersQuestion

How can I install image acquisition toolbox from a CD?

I have a CD with two files, InstallKey.txt and network.lic for Image acquisition Toolbox. >>How can I install it? The Toolbox...

4 years ago | 0 answers | 0

### 0

answersQuestion

How can I map data from [min1 max1] into [min2 max2]?

I have an array data as for example : [ .3 .5 .8 .1 0], where min1=0 and max1=0.8. Now I would like to map the into the another ...

4 years ago | 1 answer | 0

### 1

answerQuestion

How can I remove big rectangle , which contains small rectangle?

I want to remove the rectangles, which contain small rectangles with specific sizes. The big rectangle marked by arrow.. <</m...

4 years ago | 0 answers | 0

### 0

answersaccumarray error: Second input VAL must be a vector with one element for each row in SUBS, or a scalar

Solved this problem by avoiding third argument of the function. The program is Ok now. Thank to all

4 years ago | 0

| accepted

Question

How can I transform points (pixel points) of the same different size images ?

I have attached an figure, here we see two images A and B, but they are different size. I have the points of a rectangle (e.g., ...

4 years ago | 1 answer | 0

### 1

answerQuestion

accumarray error: Second input VAL must be a vector with one element for each row in SUBS, or a scalar

Error using accumarray Second input VAL must be a vector with one element for each row in SUBS, or a scalar. Error in descr...

4 years ago | 1 answer | 0

### 1

answerQuestion

How can I handle the "Index exceeds matrix dimensions error" by programming?

I have stored data in a structured variable, like this: data(1).pp(1,:)=[3 4]; data(3).pp(1,:)=[3 4]; but the index 2...

4 years ago | 1 answer | 0

### 1

answerQuestion

How can I extract or estimate crack region from a segmented image?

I have segmented an image using global threshold. The image is shown below. <</matlabcentral/answers/uploaded_files/98984/1....

4 years ago | 0 answers | 0

### 0

answersQuestion

Is it necessary to normalize a training data for KPCA?

I download some code from matlab file exchange. But nobody ensures about the data normalization that the data has zero-mean(appr...

4 years ago | 0 answers | 0

### 0

answersQuestion

What is the difference between observation and variable in case of pca() function?

I have a matrix with m rows and n columns that is built from n number of individuals for person identification. So, n is the nu...

4 years ago | 2 answers | 0

### 2

answersQuestion

Why MEX cannot find library 'm' specified with the -l option?

I compiling some c files to make mex files in windows 10 64-bit operating system. but when I run it gives the following error: ...

4 years ago | 2 answers | 0

### 2

answersQuestion

Building Mex file error?

I going to build mex file, but it give these error: warning C4244: '=' : conversion from '__int64' to 'long', possible loss ...

4 years ago | 1 answer | 0

### 1

answerQuestion

Reading frame from a 4K video?

I am reading a 4k video using the following code but all frames are black! v = VideoReader('video1.mp4'); j=1; while ...

4 years ago | 0 answers | 0

### 0

answersQuestion

Timeout Error for getsnapshot(obj) function?

I am using DFK 33UX290 camera. My matlab version is 2015b. My program looks like this: obj=videoinput('winvideo',1,'RGB6_64...

5 years ago | 0 answers | 0

### 0

answersQuestion

Mex error: "error C2664: 'mxCreateNumericArray_730' : cannot convert parameter 2 from 'int [2]' to 'const size_t *'"?

the code is look like this mxArray *mxconf = NULL; mxconf = mxCreateNumericArray(2, maps_dim, mxSINGLE_CLASS, mxREAL);

5 years ago | 1 answer | 0

### 1

answerQuestion

How can I multiply matrix with multiple vectors without loop?

I have a matrix R of size 3by3 and vector matrix T (multiple vectors) as illustrated in Figure. How can I get the output as I sh...

5 years ago | 1 answer | 0

### 1

answerQuestion

What is internal math of the pointsToWorld() function?

I would like to know about the internal math of the pointsToWorld function.... I have image point, cameraParams, rotationMatri...

5 years ago | 1 answer | 0

### 1

answerQuestion

How can I manually change origin for camera calibration?

Generate the world coordinates of the checkerboard corners in the pattern-centric coordinate system, with the * _upper-left corn...

5 years ago | 0 answers | 0

### 0

answersQuestion

Is trainFasterRCNNObjectDetector function available in Matlab 2016b?

I want to detect object using Faster R-CNN Deep Learning. Is it possible or to use _trainFasterRCNNObjectDetector_ in matlab 201...

5 years ago | 0 answers | 0

### 0

answersQuestion

How can I save only content of matlab figure ?

i am using the following code: fig=figure,imshow(RIm); saveas(fig,'22.jpg'); It saves as image but with white border. How c...

5 years ago | 2 answers | 0

### 2

answersQuestion

How can I use TensorFlow library from matlab environment?

I want to use or access TensorFlow library from Matlab environment, especially for machine learning. How can I use TensorFlow li...

5 years ago | 5 answers | 2

### 5

answersQuestion

vec2ind is not supported for code generation?

vec2ind is not supported for code generation. Is there any other way to solve this issue?

5 years ago | 1 answer | 1

### 1

answerQuestion

Output data size does not match net.outputs{1}.size?

I want to use self-organizing map for classification. My code is give n below: load('TR10by10.mat'); FMat=double(Tr1...

5 years ago | 0 answers | 0

### 0

answersQuestion

Automatic threshold estimation method for shadow detection?

I want to detect shadow and remove it from image. However, I download a code from matlab file exchange: https://www.mathworks.co...

5 years ago | 1 answer | 0

### 1

answerQuestion

Finding end points of lines in an image?

I have all points of lines in an image. I want to find the end points of the lines, shown in image (circle marked).... <</mat...

5 years ago | 1 answer | 0

### 1

answerQuestion

covariance matrix from a random vector?

Given a random vector, Y=[y1,y2,...,yn]; its covariance matrix look like this: <</matlabcentral/answers/uploaded_files/62037/...

5 years ago | 4 answers | 0

### 4

answersQuestion

imwrite function for conversion issue?

"If A is a grayscale or RGB color image of data type double or single, then imwrite assumes the dynamic range is [0,1] and autom...

5 years ago | 1 answer | 0