Image Sequencer is an online tool for image processing -- based on the idea of a storyboard. Each modification makes a new copy of the image, resulting in a series of images showing each step. It is designed for use in browsers, as well as on the [Raspberry Pi](/pi-camera). This project is supported in part by the [NASA AREN project](/aren) ## Why Image Sequencer is different from other image processing systems in that it's **non-destructive**: instead of modifying the original image, it creates a new image at each step in a sequence. This is because it: * produces a legible trail of operations, to "show your work" for evidential, educational, or reproducibility reasons * makes the creation of new tools or "modules" simpler -- [each must accept an input image, and produce an output image](https://github.com/publiclab/image-sequencer/blob/master/CONTRIBUTING.md) * allows many images to be run through the same sequence of steps - batch processing * works identically in the browser, on Node.js, and on the command line [See this great introduction](/notes/ccpandhare/03-18-2017/developing-image-sequencer-as-a-library) by @ccpandhare. Read more in-depth on the [Image Sequencer GitHub page](https://github.com/publiclab/image-sequencer). Check out the Image Sequencer User Manual by @MaggPi: https://github.com/MargaretAN9/GSOC-2019/blob/master/ImageSequencerUserManual.md [](https://publiclab.org/system/images/photos/000/023/784/original/diagram-workflows.png) **** ## Activities [activities:image-sequencer] **** ## Questions [questions:image-sequencer] **** ## NDVI There's now an "NDVI" feature in MapKnitter -- a beta -- for converting the images you upload with the #NDVI equation. It's set up for red filters only right now, but more will come. It uses Image Sequencer to do the conversion, which is temporary - your map is not affected, so think of it as a "filter" you can turn on. Need help? Ask questions above! How it looks:  ...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| nestocean85 | "https://onlinemocktest2.blogspot.com/2020/06/sbi-po-2021-exam-important-information.html good one " | Read more » | over 4 years ago | |||
| liz | "Great news @brendan_stanford ! Thank you for closing the loop on this, and best of luck to the entire classroom :) " | Read more » | over 4 years ago | |||
| brendan_stanford | "Thanks @liz and @cfastie for your advice and patience! Next steps are indeed clear; after some experimentation with @nedhorning's photo monitoring ..." | Read more » | over 4 years ago | |||
| liz | "Thanks @cfastie for this in-depth response! Your experience is literally invaluable. Also great to see @nedhorning's name come up. I'm wondering ne..." | Read more » | over 4 years ago | |||
| cfastie | "Brendan, That's good news. A Rosco 2007 filter was somehow attached to the lens of the RPi camera. That filter passes blue and NIR light but not mu..." | Read more » | over 4 years ago | |||
| brendan_stanford | "@cfastie Hi Chris, Thank you so much for taking the time to consider my problem! I'm afraid I am a relative NDVI neophyte and therefore I do not ..." | Read more » | over 4 years ago | |||
| cfastie | "This is a great question. I don’t have much information about how these photos were made, but I will make some assumptions. I assume the Pi NoIR ca..." | Read more » | over 4 years ago | |||
| liz | "@cfastie i'm wondering if you might advise on this... " | Read more » | over 4 years ago | |||
| brendan_stanford | "The Raspberry Pi is housed in an aluminum enclosure, but the camera points out an airlock porthole on the International Space Station; I am unsure ..." | Read more » | over 4 years ago | |||
| mimiss | "May I ask what material your camera is housed in? Some materials have very high NDVI values, and it looks like this material is so high in comparis..." | Read more » | over 4 years ago | |||
| warren | "and! https://publiclab.org/infragram-pi " | Read more » | about 5 years ago | |||
| warren | "Just noting that our Infragram Pi Cam kits now ship with onboard software and WiFi: https://store.publiclab.org/collections/diy-infrared-photograp..." | Read more » | about 5 years ago | |||
| HarshK | " Update! Edge Detect Module completion pr has been merged into the main branch. Demo for the module is available here https://harshithpabbati.gith..." | Read more » | over 5 years ago | |||
| HarshK | "If you couldn't upload an image when I first uploaded the link, that has been fixed now. You can upload images. Just be sure to clear the cache. I ..." | Read more » | over 5 years ago | |||
| HarshK | " Please note that in the link provided above, the page will not look proper. This is because there is a bug in image sequencer code itself. This wi..." | Read more » | over 5 years ago | |||
| HarshK | " Hello guys! Update! A working UI for new edge-detect module is available here https://harshkhandeparkar.github.io/image-sequencer/examples/legacy/ " | Read more » | over 5 years ago | |||
| HarshK | " If this thread is still valid, the edge-detect module is going to change soon. In the PR https://github.com/publiclab/image-sequencer/pull/771 , s..." | Read more » | over 5 years ago | |||
| MaggPi | "Just to close out this question, updated colormap info is at: https://publiclab.org/notes/MaggPi/01-14-2019/updated-image-sequencer-colormaps " | Read more » | almost 6 years ago | |||
| jotasbe | "oooh, i very impress by your knowleage, i am arriving NOW to PublicLab, and I find your posts, very interesting, because it is something that i try..." | Read more » | about 6 years ago | |||
| mrodriguezorejuela | "Hi there. Are there any csv files for the other colormaps? I'm specifically looking for the Physics and its variation ones. Thanks! " | Read more » | about 6 years ago | |||
| MaggPi | "Thanks again for your comments. Much of this is a work in progress but here is an update: Do you have any information on the proportion of red li..." | Read more » | over 6 years ago | |||
| cfastie | "MaggPi, This a really promising approach. Do you have any information on the proportion of red light to NIR light produced by your LED combinatio..." | Read more » | over 6 years ago | |||
| cfastie | "MaggPi you are correct that presenting color-mapped data-based images without presenting the colormap key makes the images mostly meaningless to vi..." | Read more » | over 6 years ago | |||
| warren | "Yes! I think @tech4gt is working on this very soon! There's an issue open for it too. " | Read more » | over 6 years ago |