2019-07-17 07:26 AM
How do you see an STM32 Prediction output after implementing a pre-trained model with MXCUBE and validating it on desktop and on target?
https://www.youtube.com/watch?v=grgNXdkmzzQ&t=
So i accomplished all the validation concerning the HAR CNN Keras Model , how can I see an obvious output of the prediction of the system ?
More explicitly: if i enter a custom data of a person "Walking" how can I see that the system has analyzed the data and predicted that the person is indeed walking...
2019-07-17 09:42 AM
Hi @OGaie ,
When using custom data as validation input, you can get a .csv log file of the output predicted values. The output file location is listed in the X-CUBE-AI log. For example:
Cross accuracy report (reference vs C-model)
----------------------------------------------------------------------------------------------------
NOTE: the output of the reference model is used as ground truth value
acc=100.00%, rmse=0.0003, mae=0.0001
6 classes (12 samples)
--------------------------------------
C0 2 . . . . .
C1 . 2 . . . .
C2 . . 2 . . .
C3 . . . 2 . .
C4 . . . . 2 .
C5 . . . . . 2
Creating C:\Users\legraing\.stm32cubemx\stm32ai_output\network_val_inputs.csv
Creating C:\Users\legraing\.stm32cubemx\stm32ai_output\network_val_m_outputs.csv
Creating C:\Users\legraing\.stm32cubemx\stm32ai_output\network_val_c_outputs.csv
Creating C:\Users\legraing\.stm32cubemx\stm32ai_output\network_val_io.npz
In X-CUBE-AI v4.0.0, you can also provide some expected output (ground truth) to the tool and a confusion matrix will be shown in the output log.
Output files format is described in X-CUBE-AI v4.0.0, cli documentation, section 4.7 "Post-processing support (generated data files)"
C:/Users/<username>/STM32Cube/Repository/Packs/STMicroelectronics/X-CUBE-AI/4.0.0/Documentation/an_x_cube_ai_4.0_cli.html
Best regards,
Guillaume
2019-07-18 01:49 AM
I'm working on X-CUBE-AI v3.4 and using a pre-trained model based on the cifar10 dataset i have 10 classes here :
0 - airplane
1 - automobile
2 - bird
3 - cat
4 - deer
5 - dog
6 - frog
7 - horse
8 - ship
9 - truck
all I can see in the ai_outputs_model.csv and the ai_stm32_msg.log is this :
PS: i used a custom data for cat pictures
2019-07-18 02:40 AM
Hi @OGaie ,
Great! the ai_outputs_models.csv is the file you should be looking at.
In your spreadsheet, you can see you have 7 rows and 10 columns. Each row correspond to the output of an inference. I'm guessing that the last layer of your classifier model is a SoftMax activation function, in that case, you are getting the probability distribution of your 10 classes.
E.g., for the first row:
7.43e-07, 2.60e-28, ..., 9.99e-01, ..., 1.08e-20 -> index n#6 has the highest value (0.999). The first prediction output is a "6 - frog".
Best regards,
Guillaume
2019-07-18 07:00 AM
the data shape accepted in the custom data input in the MXCube for this model is 32*32*3
so I tired to enter the data of a "cat"
cat = {226,221,195,247,241,227,246,239,227,243,237,225,243,237,222,243,236,220,241,234,218,239,229,213,237,226,210,235,224,207,234,226,208,238,229,213,237,204,192,217,142,137,........,210,194,211,198,182}
and the prediction is always wrong ...
i tried to normalize the data in range of [-1,1] and its still wrong so i'm asking why?
and how can I enter a custom data easily in the shape demanded my mxcube model without going through python codes , arrays and conversions ...etc , just to create a custom data
2020-04-22 07:24 AM
Hi OGaie
I'm need an one dimensional artificial intelligence project with Stm32 so I am need to run this project.
I watched this video too but I don't know how to continue later. how did you manage to get an output like the one above?
I would be glad if you tell me step by step.
Regards
2020-04-22 08:08 AM
Using the MX Cube AI 4.0 you can see the confusion matrix in the validation on target , so first u need to configure your usart instance and run the cube ai package as validation and load it on your board , then u validate on target (in the mx cube ai interface provided ) using custom data to see if the model is working correctly
2020-04-22 08:57 AM
Thanks for your answer
How can I fix the error in this picture?
2020-04-22 09:00 AM
Check your cable if its connected or not and if you are using the usart configuration correctly?
you need to enable the usart from the interface too
2020-04-22 09:33 AM
I checked the cable, it is working properly.
Usart settings in the below. Do I need to make any other setting related to usart?