Tagged Questions
-1
votes
0answers
12 views
Error using Imrotate in clockwise direction in MatLab
I have a binary image II1. I want to rotate this image in clockwise direction and find the indices in particular column of the image. so I used imrotate(II1,-theta) (theta is angle I specified - 6.54) ...
0
votes
1answer
41 views
compare the positions of the same object in 2 different pictures
I would like to compare the positions of the same object in 2 different pictures and get the difference between the positions in in terms of x and y coordinates.Suppose I have a picture with a square ...
0
votes
0answers
27 views
save a matrix into mysql by matlab
everyone.I need to save a matrix which is in matlab into a database of mysql,I kown mysql use blob to save big binary data,but when I am trying the following code,I get error,can anyone help me?
f = ...
2
votes
1answer
38 views
Error reading an animated GIF file in Matlab
I read GIF files in the following way:
[image, map] = imread(imagePath, 'frames', 1);
However, reading the GIF image posted below I get the following error message:
Subscripted assignment ...
2
votes
1answer
24 views
Combining GIF images and colormaps to 3-D image arrays
When I read a color JPEG image:
jpgim = imread('path/to/image.jpg')
I get an MxNx3 array. However, with GIF files I also need to read the colormap:
[gifim, map] = imread('path/to/image2.gif')
...
1
vote
1answer
29 views
changing a group of pixel values at one time MATLAB
I've found borders of shadow regions in my image, and I can plot these borders on top of the image, but I would like to create a binary image where only the pixel values of these borders are equal to ...
-6
votes
0answers
32 views
there is error that image dimension matrix exceeds and there is error showing store(k)=WM_detect(ext_wm,orig_wm); [closed]
function WM_plot(r,c,ext_wm,orig_wm)
for k=1:1000
wm=randn(r,c);%depending on the size of the watermark
wm=uint8(wm);%if necessary
store(k)=WM_detect(ext_wm,wm);%wrong ...
-4
votes
0answers
20 views
how to creat matrix/basis function of two dimensional DFT in MATLAB [closed]
I want to create matrix/basis function of two dimensional
DFT - Discrete Transform Fourier
in MATLAB!!
Is there any suggestions ?
0
votes
1answer
29 views
DFT Matlab function
I've write a function that calculates the DFT of an image, My prupose is to show the amplitude spectrum without using the fftshift command. DFT_img.m looks like this:
function f = DFT_img(a);
[n ...
1
vote
0answers
30 views
Matlab SVM for Image Classification
I am using SVM function of Matlab to classify images that are read from a folder. What I want to do is first read 20 images from the folder, then use these to train the SVM, and then give a new image ...
1
vote
1answer
37 views
Matlab Data Cursor on grayscale image showing three channels
I have a grayscale uint8 image:
I = ones(100,100) * 50;
I = uint8(I);
imshow(I);
Now If I try to read a pixel value with the "Data Cursor" it shows instead the RGB value of the gray pixel.
Is ...
0
votes
1answer
30 views
Normalization of handwritten characters w.r.t size and position
I am doing a project on offline handwriting recognition.In the preprocessing stage,I need to normalize the handwritten part in binary image w.r.t its size and position.Can anyone tell me how to access ...
-2
votes
1answer
46 views
“Out of memory” error for an image in matlab
I am capturing images via my camera Canon SX - 120 IS. But when I try to process these images in Matlab, "out of memory" error is displayed. The dimension of my image is 2736x3648x3 uint8 type. The ...
0
votes
1answer
17 views
the map in label2rgb function
I want to use the label2rgb function to construct a color image with a labeled image issued from a segmentation process.
So I compute a color map n-by-3 which contain the meanvalue of each region ...
0
votes
1answer
44 views
how to change the pixel values in a rgb image in matlab
I have a rgb image, I want to change the pixel values greater than (r:175,g:255,b:55) to Nan in matlab, How can I do that. Please let me know
