crowdcount-mcnn
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svishwa
explaining dataset .mat files
good evening,
i don't seem to understand the structure and the content of the .mat files. in the dataset.
i believe it contains ground truth (counting) for images. i know at some point in CNN we need to calculate the error between the network result and the ground truth we have
i try to print one file:
{'image_info': array([[array([[(array([[ 855.32345978, 590.49587357], [ 965.5908524 , 472.79472415], [ 937.09478464, 400.93507502], ..., [ 42.5852337 , 359.87860699], [1017.48233659, 8.99748811], [1017.48233659, 23.31916643]]), array([[920]], dtype=uint16))]], dtype=[('location', 'O'), ('number', 'O')])]], dtype=object), '__version__': '1.0', '__header__': 'MATLAB 5.0 MAT-file, Platform: PCWIN64, Created on: Fri Nov 18 20:06:05 2016', '__globals__': []}
can someone explain whats in these files and how or for what that content is used in crowd estimation.
i get the answer, this .mat file contains (or what we are most interested in) two arrays (inside of a dictionary), the contents will be more clear if you open the file in mat lab.
one array is of size N by 2 , the 2 is for the X and Y coordinate for targeted object pixels, and N is the the total number of pixels (hence, ground-truth) this array is the one shown up in the question as : array([[ 855.32345978, 590.49587357], [ 965.5908524 , 472.79472415], [ 937.09478464, 400.93507502], ..., [ 42.5852337 , 359.87860699], [1017.48233659, 8.99748811], [1017.48233659, 23.31916643]])
the other array simple contains the N ( the ground-thruth) which is shown above in the question as: array([[920]]
I'm trying to generate GT csv files for my own dataset, but I don't have the necessary .mat files. @norahik, any idea how I can generate my own .mat files?
please explain two arrays of data in this .mat file in more detail exactly what it is?
i get the answer, this .mat file contains (or what we are most interested in) two arrays (inside of a dictionary), the contents will be more clear if you open the file in mat lab.
one array is of size N by 2 , the 2 is for the X and Y coordinate for targeted object pixels, and N is the the total number of pixels (hence, ground-truth) this array is the one shown up in the question as : array([[ 855.32345978, 590.49587357], [ 965.5908524 , 472.79472415], [ 937.09478464, 400.93507502], ..., [ 42.5852337 , 359.87860699], [1017.48233659, 8.99748811], [1017.48233659, 23.31916643]])
the other array simple contains the N ( the ground-thruth) which is shown above in the question as: array([[920]]
I know the means of two arrays ,now i have my own dataset and point-xy ground truth files ,how to get the same struture like : ('image_info: ', array([[array([[(array([[222.5446098 , 472.86475499],
[ 6.63269208, 709.19046582],
[ 64.82506957, 694.96566243],
...,
[714.76278388, 418.8815984 ],
[519.37417249, 234.74573427],
[523.46608059, 238.83764236]]), array([[707]], dtype=uint16))]],
dtype=[('location', 'O'), ('number', 'O')])]], dtype=object))
the outside array([[array([[(array([[x,y]]),array([[number]],dtype=uint16))]],dtype=[('location','0'],('number','0')])]],dtype = object))
the structure is so unique as is unlike pythonic version,can I modify the dataloader file , maybe somethings is unnecessary? I wonder how you solve the problem ,thank you very much .
good evening, i don't seem to understand the structure and the content of the .mat files. in the dataset. i believe it contains ground truth (counting) for images. i know at some point in CNN we need to calculate the error between the network result and the ground truth we have i try to print one file:
{'image_info': array([[array([[(array([[ 855.32345978, 590.49587357], [ 965.5908524 , 472.79472415], [ 937.09478464, 400.93507502], ..., [ 42.5852337 , 359.87860699], [1017.48233659, 8.99748811], [1017.48233659, 23.31916643]]), array([[920]], dtype=uint16))]], dtype=[('location', 'O'), ('number', 'O')])]], dtype=object), '__version__': '1.0', '__header__': 'MATLAB 5.0 MAT-file, Platform: PCWIN64, Created on: Fri Nov 18 20:06:05 2016', '__globals__': []}can someone explain whats in these files and how or for what that content is used in crowd estimation.
I know the means of two arrays ,now i have my own dataset and point-xy ground truth files ,how to get the same struture like : ('image_info: ', array([[array([[(array([[222.5446098 , 472.86475499], [ 6.63269208, 709.19046582], [ 64.82506957, 694.96566243], ..., [714.76278388, 418.8815984 ], [519.37417249, 234.74573427], [523.46608059, 238.83764236]]), array([[707]], dtype=uint16))]], dtype=[('location', 'O'), ('number', 'O')])]], dtype=object)) the outside array([[array([[(array([[x,y]]),array([[number]],dtype=uint16))]],dtype=[('location','0'],('number','0')])]],dtype = object)) the structure is so unique as we use before, I wonder how you solve the problem ,thank you very much .
@svishwa hi ,how can I generate the GSV gt file for my own dataset , python or matlab ,thank you very much
I have solved it How do you get a heat map for a new picture? Thank you for your answer
You can use "scipy" library with python to save a "Numpy" array in a matlab format.https://docs.scipy.org/doc/scipy/index.htmlhttps://code-maven.com/slides/python/matlab-saveBest Regards,Norah Alkharashi.-------- Original message --------From: w-x-j00 @.>Date: Tue, Mar 8, 2022, 4:08 AMTo: svishwa/crowdcount-mcnn @.>Cc: norahik @.>, Mention @.>Subject: Re: [svishwa/crowdcount-mcnn] explaining dataset .mat files (#27)
我已经解决了
你好，请问你用什么工具生成的.mat文件，可以分享一下代码么？
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