R-CNN stop sign detector code

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Euseb Martinez
Euseb Martinez 2016-11-8
评论： Walter Roberson 2020-8-11
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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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
That code requires R2016b or later.
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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）

Vignesh Ganapathiraman
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
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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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
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
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,
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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
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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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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