R-CNN stop sign detector code

2016 11 8
6 个回答
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更新时间：2020 8 11
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0 个投票

I am trying understand the code for stop sign detector using cnn but i do no identify the "Command" in below sentencie of the program: "helperCIFAR10Data.download(url,cifar10Data); I look for help but it shows an error msg

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douadi alim
douadi alim 2016-11-10
Hello, I had the same issue for using this class "helperCIFAR10Data" on Matlab R2015b. After trying [fullfile(toolboxdir('vision'),'visiondemos','helperCIFAR10Data.m'] I found may other classes in Matlab root but not that one. So if you found any solution, please help.
Walter Roberson
Walter Roberson 2016-11-10
That code requires R2016b or later.
Vrushal
Vrushal 2017-9-21
编辑：Vrushal 2017-9-21
I have R2015a and wrote this code:
It's showing too many output arguments.I need to extract trainingimages,traininglabels,etc. Help me with it.
Walter Roberson
Walter Roberson 2017-9-21
Your S is a structure array of loaded data. You should be extracting fields from it, not trying to load() it. For example, if each .mat file has a variable named "trainingImages" then
trainingImages = cat(4, S.trainingImages);
Vrushal
Vrushal 2017-9-22
编辑：Vrushal 2017-9-22
It's showing error of reference to non-existent field "trainingImages" but in R2017a they were able to extract each label by using:
[trainingImages, trainingLabels, testImages, testLabels] = helperCIFAR10Data.load(cifar10Data);
I need to do same in R2015a...please help me with it
Vrushal
Vrushal 2017-9-23
@walter robinson
Walter Roberson
Walter Roberson 2017-9-28
Please show the output of
whos -file data_batch_1.mat
whos -file data_batch_2.mat
whos -file data_batch_3.mat
whos -file data_batch_4.mat
whos -file data_batch_5.mat
Jun Zhang
Jun Zhang 2019-3-18
I have the same problem.
>> whos -file data_batch_1.mat
whos -file data_batch_2.mat
whos -file data_batch_3.mat
whos -file data_batch_4.mat
whos -file data_batch_5.mat
Name Size Bytes Class Attributes
batch_label 1x21 42 char
data 10000x3072 30720000 uint8
labels 10000x1 10000 uint8
Name Size Bytes Class Attributes
batch_label 1x21 42 char
data 10000x3072 30720000 uint8
labels 10000x1 10000 uint8
Name Size Bytes Class Attributes
batch_label 1x21 42 char
data 10000x3072 30720000 uint8
labels 10000x1 10000 uint8
Name Size Bytes Class Attributes
batch_label 1x21 42 char
data 10000x3072 30720000 uint8
labels 10000x1 10000 uint8
Name Size Bytes Class Attributes
batch_label 1x21 42 char
data 10000x3072 30720000 uint8
labels 10000x1 10000 uint8
Walter Roberson
Walter Roberson 2019-3-18
Could you clarify what problem you are having? Please post your code.

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 采纳的回答

Walter Roberson
Walter Roberson 2016-11-8

0 个投票

That code requires R2016b or later.

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Euseb Martinez
Euseb Martinez 2016-11-8
Yes Sir Tks! I did the download from Matlab trial (I assume is the most updated version) even I did all row comment (% sign in the beginning of the sentence) and the code runs with no error msg! That's the reason of my question, I do not understand what this sentence means or what it doing in the code sequence.
Walter Roberson
Walter Roberson 2016-11-8
type(fullfile(toolboxdir('vision'),'visiondemos','helperCIFAR10Data.m'))
% This is helper class to download and import the CIFAR-10 dataset. The
% dataset is downloaded from:
%
% https://www.cs.toronto.edu/~kriz/cifar-10-matlab.tar.gz
%
% References
% ----------
% Krizhevsky, Alex, and Geoffrey Hinton. "Learning multiple layers of
% features from tiny images." (2009).
Euseb Martinez
Euseb Martinez 2016-11-9
编辑：Euseb Martinez 2016-11-9
Tks so much Sir!.... now I know the meaning of sentence. I will try to understand the complete code. Tks again. Euseb
ahmed SHAH
ahmed SHAH 2016-11-17
编辑：Walter Roberson 2016-11-17
when i resolve the above issure using
fullfile( fullfile('C:\Users\hexroot\Desktop\people detection\cifar-10-matlab\cifar-10-batches-mat'))
its creates are ans named variable in workspace...... when i execute the second line
[trainingImages, trainingLabels, testImages, testLabels] = helperCIFAR10Data.load(cifar-10-batches-mat);
its show an error undefined variable cifar.. and can i use this example to detect cars and people also thanks in advance and what database will be good for detecting car people and stop signs..
ahmed SHAH
ahmed SHAH 2016-11-17
@walter robinson
Walter Roberson
Walter Roberson 2016-11-17
location = 'C:\Users\hexroot\Desktop\people detection\cifar-10-matlab';
[trainingImages, trainingLabels, testImages, testLabels] = helperCIFAR10Data.load(location);
Swati Prakash
Swati Prakash 2020-8-11
I have installed MATLAB 2020 but also it is giving error
Unable to resolve the name helperCIFAR10Data.load.
I have given the fullpath
addpath(['D','/examples','/deeplearning_shared','/main']);
location = 'D:\examples\deeplearning_shared\main\helperCIFAR10Data.m';
[trainingImages, trainingLabels, testImages, testLabels] = helperCIFAR10Data.load(location);
Walter Roberson
Walter Roberson 2020-8-11
These days,
fullfile(matlabroot,'examples','deeplearning_shared','main', 'helperCIFAR10Data.m')

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更多回答（5 个）

2 个投票

Or you can just add the path at the start
addpath([matlabroot,'/examples','/vision','/main']);
Ali
Ali 2017-11-1
编辑：Walter Roberson 2017-11-1

1 个投票

Hi guys,
The file is really at the directory provided by Walter Roberson, however the error message still there.
to overcome this problem, you may follow these steps:
  1. go to fullfile(matlabroot,'examples', 'vision', 'main', helperCIFAR10Data.m', find the file there and open it.
  2. inside 'helperCIFAR10Data.m' you will find 4 functions (download,load, loadBatchAsFourDimensionalArray, convertLabelsToCategorical). Copy each function to a new script and save them. you can give 'load' function to another name to avoid conflict with the same Matlab-builtin function.
  3. use the code provided on Mathworks website but remove the prefix'helperCIFAR10Data'
% Download CIFAR-10 data to a temporary directory
location = 'C:\Users\JICA\Desktop\Object Detection Using Deep Learning\';
url = 'https://www.cs.toronto.edu/~kriz/cifar-10-matlab.tar.gz';
download(url, location);
%%Load
% Load the CIFAR-10 training and test data.
[trainingImages, trainingLabels, testImages, testLabels] = Dataloading(location);
Each image is a 32x32 RGB image and there are 50,000 training samples.
size(trainingImages)
hope this helps
Ali

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sheeza rafaqat
sheeza rafaqat 2018-2-18
how can i goto fullfile(matlabroot,'examples', 'vision', 'main', helperCIFAR10Data')
Walter Roberson
Walter Roberson 2018-2-18
cd(fullfile(matlabroot,'examples', 'vision', 'main'))
edit helperCIFAR10Data.m
sheeza rafaqat
sheeza rafaqat 2018-2-28
when i am copying each function in a seperate script it is giving an error of "Not enough arguments in function". how can i resolve this issue?
bhanu prakash
bhanu prakash 2019-3-5
when i am copying each function in a seperate script it is giving an error of "Not enough arguments in function". how can i resolve this issue?
Walter Roberson
Walter Roberson 2019-3-5
Please show which function you are calling, and show how you are calling it.
Did you follow Ali's suggestion to rename load ? That would include changing the references to the function so that you do not accidentally invoke MATLAB's built-in load()

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巴山学长
巴山学长 2017-11-2

1 个投票

Just copy the 'helperCIFAR10Data.m' to your temporary directory, and then run. Good luck!
Saif Hussein
Saif Hussein 2017-9-28
编辑：Walter Roberson 2017-10-19

0 个投票

when l was to run the code in https://uk.mathworks.com/help/vision/examples/object-detection-using-deep-learning.html . l have that error below
Undefined variable "helperCIFAR10Data" or class "helperCIFAR10Data.load".
l have email the matlab team many times, they didn't solve the problem. l do believe the problem with matlab copy under Mac,

3 个评论
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Walter Roberson
Walter Roberson 2017-9-28
Which MATLAB release are you using?
Donnie Agema
Donnie Agema 2017-10-14
I am using MATLAB version R2017b and getting the same error. Any solution?
Walter Roberson
Walter Roberson 2017-10-19
编辑：Walter Roberson 2019-1-30
In R2017b I find it at
fullfile(matlabroot,'examples', 'vision', 'main', 'helperCIFAR10Data.m')
This requires the Computer Vision toolbox.

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Nicola Gaburro
Nicola Gaburro 2017-10-2

0 个投票

I'm having the same issue with Matlab R2017b When running the command
helperCIFAR10Data.download(url, cifar10Data);
it shows the error
Undefined variable "helperCIFAR10Data" or class "helperCIFAR10Data.download". Seems like helperCIFAR10Data class is missing

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Walter Roberson
Walter Roberson 2017-10-19
编辑：Walter Roberson 2019-1-30
In R2017b I find it at
fullfile(matlabroot,'examples', 'vision', 'main', 'helperCIFAR10Data.m')
This requires the Computer Vision toolbox.
Walter Roberson
Walter Roberson 2019-1-30
By R2018b it has moved to
fullfile(matlabroot,'examples', 'nnet', 'main', 'helperCIFAR10Data.m')
Dora Craba
Dora Craba 2020-5-15
what is the correct code for matlab2019b?
Walter Roberson
Walter Roberson 2020-5-15
fullfile(matlabroot,'examples','deeplearning_shared','main','helperCIFAR10Data.m')
Dora Craba
Dora Craba 2020-5-16
Thank you for your answer. Now I get another error:
Unable to resolve the name helperCIFAR10Data.load.
Error in prova_dataset (line 9)
[trainingImages,trainingLabels,testImages,testLabels] = helperCIFAR10Data.load(cifar10Data);
Walter Roberson
Walter Roberson 2020-5-17
The helperCIFAR10Data class must be on your MATLAB path.
addpath(fullfile(matlabroot,'examples','deeplearning_shared','main'))

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