Infragram Point & Shoot

The Infragram Point & Shoot is a handheld, battery powered mini camera (a modified Mobius Action Cam) for doing plant analysis. We [modify these]( to replace the infrared-blocking filter with a red filter, effectively exchanging its blue light channel for infrared light. (_Lead image by @mathew_) This is based on a great deal of [research by Public Lab contributors]( and was initially pioneered in our community by @nedhorning and @cfastie. See especially [these]( [two]( research notes. Also see [this page](/wiki/raspberry-pi-infragram) for how to do this with a [Raspberry Pi camera](/wiki/pi-camera). ## Why Vineyards, large farms, and NASA all use [near-infrared photography]( for assessing plant health, usually by mounting expensive sensors on airplanes and satellites. At Public Lab, we've developed a Do-It-Yourself way to take these kinds of photos, enabling us to monitor our environment through quantifiable data. [Read more about the Infragram project here](/wiki/infragram). [![5412520298_93873f36d0_o.png](]( Our technique uses a modified digital camera to capture near-infrared and red light in the same image, but in **different color channels**. We then post-process the image (see, below) to attempt to infer how much plants are photosynthesizing. This allows us to better understand and quantify how much of the available light plants are using to produce sugar via photosynthesis. ### Basics Before you begin, to take useful plant analysis photos, **you'll have to modify your camera's white balance**, so that vegetation looks "bluish" but there is not an overall red tinge to the images. You can achieve this with a custom config file, as described below. Some cameras may require a firmware upgrade to v1.20. If you've gotten your Infragram Point & Shoot from the [Public Lab store](, both the config file and the v1.20 firmware should be on the SD card provided. However, you'll still have to load up the white balance configuration as described in the Activities section below. [![Infragram_Parts.jpg](]( (_above image by @abdul_) ## Activities [activities:infragram-point-shoot] **** ## Questions These are questions just for the Infragram Point & Shoot, also known as the Mobius Action Cam. For questions about infrared imaging or the Infragram project more broadly, see [the Infragram page](/wiki/infragram#Questions). [questions:infragram-point-shoot] For any information, support, or troubleshooting not covered here, please look to [this epic thread about the Mobius Action Cam at]( which contains a great deal of information about using and modifying the camera. **** ## Upgrades Done something cool with your Mobius? Added to it or improved on it? Post your upgrade guides here: [upgrades:infragram-point-shoot] **** ### Software There is a variety of software available to process your images to calculate [NDVI](/wiki/ndvi) and better understand or compare plant health. See [Infrared software](/wiki/infrared-software) for options. To get started quickly, see our guide on [Getting started with]( **** ### White balance One step you need to take to set up this camera is to configure the **white balance**; otherwise, your images will be flooded with infrared and will look pinkish -- and the NDVI post-processing steps (see above) won't work. To set the white balance on your Mobius, follow the steps in this activity: Images should look roughly like the "GOOD" example below -- vegetation should appear generally pastel blue. An incorrectly white-balanced image such as the "BAD" example below may appear with an overall reddish tint. This means the camera probably has not accepted your config file, possibly due to misformatting or incorrect uploading. [![good-bad.png](]( For more on white balance, see: > [Infrablue white balance](/wiki/infrablue-white-balance) **** ### Resources Kit insert: infragram-ps-insert.pdf timelapse.svg modes.svg An official manual for the Mobius Action Cam can also be found here: ...

Author Comment Last activity Moderation
patcoyle "Thanks Jeff, I've got these on order as well as as a few of these 36" ones:" | Read more » almost 8 years ago
warren "Ah, cool! I found them for $1.29 each here: I bought two, but maybe three is a good idea in case 2 won..." | Read more » almost 8 years ago
patcoyle "Jeff, absolutely. Sorry I didn't see this or the notification. What's the source to purchase? " | Read more » almost 8 years ago
patcoyle "In the YouTube, BrainExploder provides this link to 12mm lens: 12mm: An 8mm unit is shown at: http://www...." | Read more » almost 8 years ago
RQ-05 "Wow...great stuff! I have been looking for different lenses for my mobius. I tried Prism Stowaway Delta but didn't see any lenses there. Can you gi..." | Read more » almost 8 years ago
warren "Hi Pat! I have these very cheap and light 18" mylar balloons, and was wondering if two of them would lift a mobius. Obvious advantages: fits in c..." | Read more » almost 8 years ago
patcoyle "The description of the rig I used is described in the videos in this playlist. Hope this helps. It's just in early prototyping, so suggestions are ..." | Read more » almost 8 years ago
eustatic "Yeah, i agree that having a more regular mobius lens would improve stitching. Liz has recently done a bunch of fisheye NIr maps, and may also have ..." | Read more » almost 8 years ago
mathew "@Jimsford. you gotta print one! Shapeways could run one for you. " | Read more » almost 8 years ago
jimsford "where can i get that from? " | Read more » almost 8 years ago
mathew "nice shot! " | Read more » almost 9 years ago
warren "Much better -- this one in Bilbao, with @pablo (pablo rey): " | Read more » almost 9 years ago
warren "Great to hear! @mathew, I fixed it by using WB #7 and setting all 3 to be 310/500/700. I guess that's not good for figuring out the problem but it..." | Read more » almost 9 years ago
GreenLeaves "@warren: good news! We solved our problem by downloading a different browser; now it works. But thanks anyway :-) " | Read more » almost 9 years ago
warren "@GreenLeaves, can you share a link to the image as you've edited it so I can see the edit history log? What equation are you trying to use? " | Read more » almost 9 years ago
GreenLeaves "Hi warren, many thanks for your response. Sorry for disturbing you on your journey. In fact we have a more basic technical problem. After uploading..." | Read more » almost 9 years ago
warren "Hi, GreenLeaves - sorry, we were talking about the camera settings, not the stuff. I'm actually traveling so I apologize for not resp..." | Read more » almost 9 years ago
GreenLeaves "Our problem is, that when we type in the RGB gain numbers and then click "run", the image disappears.. are you familiar with this problem? " | Read more » almost 9 years ago
mathew "Custom WB 1 is value 6, WB 2 is 7, WB 3 is 8. But... I found that on my camera the numbers were offset, so 6 was 7, 7 was 8, 8 was 9.... " | Read more » almost 9 years ago
warren "Oh hmm... The config file you posted shows Customized White Balance 1 Red Gain=[310],Green Gain=[500],Blue Gain=[700]; Customized White Balance 2..." | Read more » almost 9 years ago
mathew "This is definitely not the right config setting-- the setting should be : Red Gain=[310],Green Gain=[500],Blue Gain=[700]; " | Read more » almost 9 years ago
GreenLeaves "HI warren. We tried to edit our photos on infragram so that they look just like yours, but it didn't work.. Can you please contact us? thanks, Gree..." | Read more » almost 9 years ago
patcoyle "Very nice use of 3D design and printing for a specific one-off project. Exemplary. " | Read more » about 9 years ago
mathew "this is really cool. I made mine out of paper and tape " | Read more » about 9 years ago