[Pi IoT] Plant Health Camera #11 - Finalization

RE: [Pi IoT] Plant Health Camera #11 - Finalization

stuksdara — Sat, 12 Sep 2020 10:24:34 GMT

Really helpful tutorial! Thank you, Gerrit!

We do plant monitoring in greenhouse with 60-sec interval to determine unfavourable climate conditions and this set up helps us a lot

I did camera with NoIR camera, and used GNDVI, result was somewhat usable, but not fully satisfactory. https://www.youtube.com/watch?v=0FWwieqPmKk

In last 2 days I have built this project, so now we will have clear understanding in plant responses to climate. Still we have struggle to make camera work o 64-bit OS, but this is not topic of this post.

[View:/resized-image/__size/620x467/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-6e6257f9-2a56-41c6-920e-0fc4f8d7dd96/7624.contentimage_5F00_182146.jpg:620:467]

RE: [Pi IoT] Plant Health Camera #11 - Finalization

cjnsario — Fri, 11 Sep 2020 16:33:59 GMT

Good day sir! Is there a way to get the NDVI values of the captured images in terms of numbers? For example image1 got a 0.7 ndvi value.

RE: [Pi IoT] Plant Health Camera #11 - Finalization

akshitagupta15june — Sun, 24 May 2020 09:43:40 GMT

Have a look at my entry and please like and share #badass Woman Project Entry - Akshita Gupta

RE: [Pi IoT] Plant Health Camera #11 - Finalization

msing — Sat, 23 May 2020 03:58:37 GMT

Hi, still reading on this article on 2020 [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-6e6257f9-2a56-41c6-920e-0fc4f8d7dd96/6675.contentimage_5F00_1.png:16:16]

I have some questions, to calculate NDVI, why cant we take the raw image instead we taking the color image?

RE: [Pi IoT] Plant Health Camera #11 - Finalization

gpolder — Fri, 28 Apr 2017 19:04:20 GMT

can you please check on the master, from the folder where you run the ndvicam.py whether ./pi1iot_share/slave_image.jpg exists.

RE: [Pi IoT] Plant Health Camera #11 - Finalization

davidbale — Fri, 28 Apr 2017 17:44:34 GMT

Hi Mr. [mention:a168e5354b394dc6b489e7f40d9cba74:e9ed411860ed4f2ba0265705b8793d05].

May I ask a few questions?

To extract the color channel, for example nir channel from noir image, why need to divide by 256? and

Can you explain the calculation process for NDVI. I don't understand ndvi_image = (ndvi_image+1)/2 and the point of converting (ndvi_image*255).

Thanks you.

RE: [Pi IoT] Plant Health Camera #11 - Finalization

gpolder — Mon, 06 Mar 2017 20:45:41 GMT

The script loads the image using:

color_image = cv2.imread('pi1iot_share/slave_image.jpg',cv2.IMREAD_COLOR)

So in your case from /home/pi/pi1iot_share/slave_image.jpg

Did you properly mount the folder at /home/pi/pi1iot_share/ ?

Just check whether you can find pi1 's content there.

RE: [Pi IoT] Plant Health Camera #11 - Finalization

gpolder — Sat, 04 Mar 2017 16:38:09 GMT

static ip is not nesseary as mentioned before. If you know your ip number its fine.

Did you mount the slave pi's filesystem before running ndvicam.py?

sshfs pi@192.168.2.222:planthealthcam ./pi1iot_share

RE: [Pi IoT] Plant Health Camera #11 - Finalization

gpolder — Fri, 03 Mar 2017 14:53:03 GMT

Although not necessary for the process, for the slave Pi it is recommended to have a static ip number.

Otherwise you need to find out the ip number each time you run:

sshfs pi@192.168.2.58: pi1iot_share/

Furthermore in case of standalone usage, with direct connection there is no DHCP server available, unless you run it on the master Pi, which is overkill for this specific application.

Regarding the GPIO module error, I'm using python 2.7, for version 3 the software needs to be adapted, which I didn't yet.

RE: [Pi IoT] Plant Health Camera #11 - Finalization

element14Dave — Mon, 29 Aug 2016 14:28:05 GMT

Congrats on completing the project, it is no small feat. Great project!

Dave

RE: [Pi IoT] Plant Health Camera #11 - Finalization

fvan — Sun, 28 Aug 2016 13:37:39 GMT

Well done [mention:a168e5354b394dc6b489e7f40d9cba74:e9ed411860ed4f2ba0265705b8793d05], great project [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-6e6257f9-2a56-41c6-920e-0fc4f8d7dd96/contentimage_5F00_1.png:16:16]