So, I got the code for DSP-SIFT from the original works of the author in the form of a toolbox. When I followed the instructions and tried to get it to run in MATLAB :
>> dsp_setup
>> dsp_mosaic
Undefined function 'vl_usift' for input arguments of type 'single'.
Error in vl_dspsift (line 50)
frames = vl_usift(im);
Error in dsp_mosaic (line 68)
[f1, d1] = vl_dspsift(im1g, opt);
After Googling this error(I am new to MATLAB), I found a solution saying that maybe my function cannot be recognised by MATLAB, so I need to add the containing folder to the MATLAB search path, which I tried doing:
>> which vl_usift -all
'vl_usift' not found.
>> addpath ('/home/dsp_toolbox_v0.0.2/dsp_toolbox_v0.0.2/toolbox/sift/')
Howver, I get the same error when trying to run the code.
I can add the code if it helps, but I do need advice on how to proceed from here.
Thanks
So, after a few hours of searching around, I finally came across the problem, there were a few lines commented in the setup file which I had to uncomment. Simple and frustrating.
Thanks!
Related
Attempting to follow this tutorial https://www.mathworks.com/help/vision/ref/objectdetectortrainingdata.html, I have aerial photos of parking lots in which I want cars to automatically be counted by the program. (If I am going in the wrong direction or there is an easier solution please let me know!).
My Error:
Warning: Variable 'carsGroundTruth' not found.
In carDetection (line 3)
My Code:
imageDir = fullfile(matlabroot, 'toolbox', 'vision', 'visiondata', 'carImages');
addpath(imageDir);
load('cars.mat','carsGroundTruth')
Why won't cars.mat load? I have tried putting it in the MATLAB file within Documents, and also the imageDir referenced in line 1.
I was going through the example of FRDM-KL25Z library in MATLAB Simulink and having some problems when deploying it to the board.
1) Most of the H files are missing in the directory during (compiling?) and was FIXED by downloading individually from website.
2) After the H files are fixed, MATLAB prompt me another error stating FILE_DIR/TOOLCHAIN_GCC_ARM/libmbed.a' needed by ".../freedom_board_servo.elf'
I'm quite new to this field so was hoping someone can guide me through these errors as I have been stuck here doing nothing for few days fixing errors and errors.
Thanks.libmbed.a ERROR
Hi all the problem is fixed by changing the directory of the file.
During installation MATLAB have named the directory wrongly "8e73be2a2ac1" was supposed to be named to "mbed-8e73be2a2ac1".
I am running a code that uses the fitsread function to open my fits movies and analyse them. It was working perfectly fine until about a week ago, when, without me doing anything, it started giving the following error whenever I try to run it:
Error using matlab.io.fits.openFile (line 48)
Unable to open file. File might be corrupt or filename might have unsupported
characters.
Error in fitsread>read_image_hdu (line 412)
fptr = fits.openFile(info.Filename);
Error in fitsread (line 125)
data = read_image_hdu(info,1,raw,pixelRegion);
I have tried manually checking the properties of such files using the fitsinfo function and nothing was wrong with the files themselves. I have also tried to re-set the default MATLAB path, delete them from the working folder and re-download them from a central University server where they were originally stored upon acquisition on a microscope, but it didn't help either. A collaborator has tried running the same code on his machine and it works well. I get this same error on both MATLAB versions R2011b and R2015b. It originally used to work on R2011b with the same files.
Thanks in advance to whoever will be able to help!
I have got this really strange error in matlab. When I try to run the command
save(fullfile('filepath','filename'),'var','-v7');
I get the error message,
error using save can't write file
but when I try
save(fullfile('filepath','filename'),'var','-v7.3');
everything works fine. The the variable takes some space on the workspace, 165MB, but the I would guess that the size should not be an issue here. Does anyone know why it does not work to save in v7?
For the one that want to confirm the size of the variable, I will add the whos information,
Name Size Bytes Class Attributes
myName 1x1 173081921 struct
BR/ Patrik
EDIT
The variable I try to save is a struct with plenty of fields. I have tried to save a 3 dimensional matrix of size 800 mb, which went through without problems.
This is not an exact match to your problem, but I received the same error message when trying to save to -v6 format. Matlab is supposed to issue an error when a variable type or size is not supported:
help save
...
If any data items require features that the specified version does not support, MATLAB does not save those items and issues a warning. You cannot specify a version later than your version of MATLAB software.
Matlab's error checking seems to not be perfect, because there are certain situations (dependent on Matlab version and the particular variable type) that just fail all together with this not so helpful error message:
Error using save
Can't write file filename.mat.
For example, saving a string with certain unicode characters with the '-v6' option in Matlab r2015b in Linux produces the error, but Matlab r2016a in Windows does not. This is the output from my Matlab r2015b session:
>> A=char(double(65533))
A =
?
>> save('filename.mat','-v6','A')
Error using save
Can't write file filename.mat.
Without having your specific variable to test with, but seeing that the error messages match, I suggest removing parts of your data structure until it will save in order to isolate the variable that is causing it to fail.
I want through matlab tutorial but I did not understand it clearly.
Could anyone can explain to me step by step how to load and call .dll functions in matlab?
I tried to use loadlibrary function but I get and error, if anyone can tell we where to put the .dll file and the .h file?
I don't do this often, but i usually do something like:
fullpathToHeader = 'c:\full\path\to\a\header.h';
fullpathToDll = 'c:\full\path\to\a\libraty.dll';
loadlibrary(fullpathToDll, fullpathToHeader);
Then if that works, you can call library functions as:
[outArg1, outArg2, ...] = calllib('library','function',inArg1, inArg2, ...)
See the following link, which contains some problems I encountered and overcame, when trying to load a dll into matlab:
http://www.mathworks.com/matlabcentral/newsreader/view_thread/341602