I am generating a matlab figure with features
Separate background regions generated using patch command
A couple of arrows using arrow.m (https://www.mathworks.com/matlabcentral/fileexchange/278-arrow)
Annotations,Labels,etc
I have tried Matlab option to convert to .eps format as well as print2eps.m from https://www.mathworks.com/matlabcentral/fileexchange/23629-export_fig. In both cases I get following warning
Warning: Loading EPS file failed, so unable to perform post-processing. This is usually because the figure contains a large number of patch objects. Consider exporting to a bitmap format in this
case.
Following is the screenshot of two images. Left is Matlab, Right is in latex
As one can obverse, output file is not anywhere near to original matlab figure. Any thoughts on addressing this issue would be much appreciated
Related
Does anyone use the matlab wrapper for the caffe framework? Is there a way how to extract an 4096 dimensional feature vector from an image?
I was already following
https://github.com/BVLC/caffe/issues/432
and also tried to remove the last lines in imagenet_deploy.prototxt to remove layers as suggested in another forum on github.
But still when I run "matcaffe_demo(im, 1)" I only get a 1000 dim vector of scores (for the image net classes).
Any help would be appreciated
Kind regards
It seems that you might not be calling the correct prototxt file. If the last layer defined in the prototxt has the top blob of 4096 dimension, there is no way for the output to be 1000 dimension.
To be sure, try creating a bug in the prototxt file and see whether the program crashes. If it doesn't then the program indeed is reading some other prototxt file.
I wanted to import a tif image into Matlab workspace as a variable using File/import data tool. But I got the following error "Warning: The datatype for tag SamplesPerPixel should be TIFF_SHORT instead of TIFF_LONG. This may cause data corruption". The image type is float single, 32 bit. and size is really big (4144,12619,7). Can matlab read and display such an image. What does this error mean? and how can I correct it?
Thank you so much
Read the TIFF specification.
From the warning message it appears there's some problem with the format chosen. When reading a TIFF file, each IFD has many entries, one of them being SamplesPerPixel (see page 24 of the specification). This should be of type SHORT (see page 15 for the list of types and what they are). However, apparently, you have type LONG there. That seems to be causing problem. Either matlab is identifying it incorrectly, or the software you used to save the image is not following the TIFF specification.
I've asked this before, but I feel I wasn't clear enough so I'll try again.
I am running a network simulation, and I have several hundreds output files. Each file holds the simulation's test result for different parameters.
There are 5 different parameters and 16 different tests for each simulation. I need a method to store all this information (and again, there's a lot of it) in Matlab with the purpose of plotting graphs using a script. suppose the script input is parameter_1 and test_2, so I get a graph where parameter_1 is the X axis and test_2 is the Y axis.
My problem is that I'm not quite familier to Matlab, and I need to be directed so it doesn't take me forever (I'm short on time).
How do I store this information in Matlab? I was thinking of two options:
Each output file is imported separately to a different variable (matrix)
All output files are merged to one output file and imprted together. In the resulted matrix each line is a different output file, and each column is a different test. Problem is, I don't know how to store the simulation parameters
Edit: maybe I can use a dataset?
So, I would appreciate any suggestion of how to store the information, and what functions might help me fetch the only the data I need.
If you're still looking to give matlab a try with this problem, you can iterate through all the files and import them one by one. You can create a list of the contents of a folder with the function
ls(name)
and you can import data like this:
A = importdata(filename)
if your data is in txt files, you should consider this Prev Q
A good strategy to avoid cluttering your workspace is to import them all into a single matrix. SO if you have a matrix called VAR, then VAR{1,1}.{1,1} could be where you put your test results and VAR{1,1}.{2,1} could be where you put your simulation parameters of the first file. I think that is simpler than making a data structure. Just make sure you uniformly place the information in the same indexes of the arrays. You could also organize your VAR row v col by parameter vs test.
This is more along the lines of your first suggestion
Each output file is imported separately to a different variable
(matrix)
Your second suggestion seems unnecessary since you can just iterate through your files.
You can use the command save to store your data.
It is very convenient, and can store as much data as your hard disk can bear.
The documentation is there:
http://www.mathworks.fr/help/techdoc/ref/save.html
Describe the format of text files. Because if it has a systematic format then you can use dlmread or similar commands in matlab and read the text file in a matrix. From there, you can plot easily. If you try to do it in excel, it will be much slower than reading from a text file. If speed is an issue for you, I suggest that you don't go for Excel.
I'd like to create a PDF out of my matlab m-function. The PDF should contain some text information which I want to style a bit and one image (which is previously generated as figure). Is there any way? The only thing I found is publish to publish source-code. The only alternative I could think off was to programm the texts into the figure window and than export the whole figure to pdf. Perhaps there's a better way to do it?
Thanks!
I would recommend generating your figure with Matlab, outputting it to eps, then converting the figure to pdf using epstopdf. Then embed your figure in a latex document and generate a pdf with pdflatex.
I know this sounds like an incredibly roundabout way of doing it, but
This is the way I've come to do it after years of experience and it always gives me the best results
Every one of my colleagues does it this way for the same reason
The results will be completely reproducible
You're using Matlab to do what it's good at (making scientific figures) and latex to do what it's good at (formatting documents)
The Matlab code to make the eps of the figure would be like this (supposing your figure is figure 1):
print -depsc2 -f1 -loose my_fig.eps
You could pretty easily write a latex template that uses my_fig.pdf and then run everything from your Matlab using bangouts:
!epstopdf my_fig
!pdflatex mydoc.tex
If you're on Windows, you can connect to Word using 'actxserver', insert and style any text you like into a blank document, copy and paste MATLAB figures into the document, and then save it to PDF. You can do all of that from within MATLAB. The first time you do this it's a pain, as you need to learn quite a bit about the Word Object Model; but once you've done it a couple of times it's very simple and quick, and you can achieve very professional results. You can combine this with using the 'export_fig' that others have mentioned.
I am working on a project that requires reading intensity values of several images from a text file that has 3 lines of file header, followed by each image. Each image consists of 15 lines of header followed by the intensity values that are arranged in 48 rows, where each row has 144 tab-delimited pixel values.
I have already created a .mat file to read these into Matlab and create a structure array for each image. I'd like to use OpenCV to track features in the image sequence.
Would it make more sense to create a .cpp file that will read the text file or use OpenCV and Matlab mex files in order to accomplish my goal?
I'd recommend writing C++ code to read the file directly independent of Matlab. This way, you don't have to mess with row major vs. column major ordering and all that jazz. Also, are there specs for the image format? If it turns out to be a reasonably common format, you may be able to find an off-the-self reader/library for it.
If you want the visualization and/or other image processing capabilities of Matlab, then mex file might be a reasonable approach.