ESP32 CAM error on image_util.h

MarcVer · January 24, 2022, 11:55am

Hello all,

I am trying out edgeimpulse on a ESP32-CAM.

I Copied the code from here: https://github.com/edgeimpulse/example-esp32-cam/blob/main/Examples/Basic-Image-Classification/Basic-Image-Classification.ino

But, when running the code i get this error message show up:

Basic-Image-Classification:12:10: fatal error: image_util.h: No such file or directory

I don’t know where i can get that file or what i have to change.

I am just started with edge impulse, so this is my first try.

Thanks for the help!

MarcVer · January 24, 2022, 12:27pm

More information:
Looks like this is the same issue: https://github.com/edgeimpulse/example-esp32-cam/issues/7

louis · January 24, 2022, 12:50pm

Hello @MarcVer,

Which version of the boards have you installed in your Arduino IDE?
Here is what I have on my side:

When I select the AI thinker board, I can compile successfully:

Also, image_util is present in my Arduino’s application folder:

Let me know if you solve your issue so I can update or improve the Github’s README.
If not I’ll try a fresh installation of the ESP32 boards.

Regards,

Louis

MarcVer · January 24, 2022, 1:06pm

First of all, thanks for your help!

I have version 2.0.2 installed in boards manager.

In my Arduino15/packages/esp32/hardware/esp32/2.0.2/tools/sdk folder i have:
esp32
esp32c3
esp32s2

But no include folder.

I will try to downgrade my esp32 boards

MarcVer · January 24, 2022, 1:21pm

@louis

Thanks! First one fixed

Now i get this error from the edgeimpulse library.

‘struct ei_impulse_result_t’ has no member named ‘classification’

I think this is the same issue now: Compilation Failures running Object Detection Model on Arduino IDE for ESP32CAM board

But, is there a fix already?

louis · January 24, 2022, 1:35pm

Indeed, at the moment we cannot run Object Detection on most micro-controllers targets. If you have a look at the resources needed in your “Object Detection” tab in the studio, you’ll see that it does not fit on the ESP32 resources.

Two good news :

We have been working on a lighter object detection technique, it should be release very soon. Stay tuned
We will officially support ESP32 in the following month.

Regards,

Louis

MarcVer · January 24, 2022, 1:40pm

@louis
Thanks!

I see your name now in collaborators in my project, is that ok?

I will follow the news en stay tuned for the esp32 release! Really looking forward to it

louis · January 24, 2022, 1:45pm

@MarcVer, yes I joined your project to make sure you were using an Object Detection project before replying.

I’ll remove myself now from your project.

Regards,

Louis

MarcVer · January 24, 2022, 1:46pm

No problem! Thanks for the great help! Will try again next month

MarcVer · January 25, 2022, 3:46pm

@louis

One more question, does image classification work on the esp32 already?

In other words, is it only the object detection that is not yet supported?

Thanks again!

louis · January 25, 2022, 3:49pm

Hello @MarcVer,

Yes Image Classification works already on ESP32 although it is not officially supported and you’ll need to use a small MobileNet model (MobileNetV1 96x96 0.1) to stay within the ESP32 resources.

Regards,

Louis

MarcVer · January 25, 2022, 3:50pm

@louis Thanks again! Will try that!

MarcVer · February 19, 2022, 1:38pm

@louis

Are there any updates for the esp32 CAM object detection support?

louis · February 21, 2022, 8:44am

Hello @MarcVer,

Not yet, we are still finalizing our constraint object detection models internally.

Regards,

Louis

jenny · February 21, 2022, 9:11am

We are also working on full ESP32 support soon!

OEWPS · February 18, 2023, 7:14am

i have the same error message!
In the Arduino IDE and vscode platformio. I reinstalled the esp32 board on Arduino IDE but it didn’t help. Can someone give me a link so i can download the header file?
Thanks in advance!