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 | ||
|---|---|---|---|---|---|
| warren | "This is cool! You're working on an Image Sequencer module for this, right? This will be so cool to be able to use in the simple interface at https:..." | Read more » | over 5 years ago | |||
| amazinggames413 | "This is Very very nice article. Everyone should read. Thanks for sharing and I found it very helpful. Don't miss WORLD'S BEST GAMES " | Read more » | over 5 years ago | |||
| tech4gt | " @MaggPi Try it with sudo! I think global packages need to be installed with root user access now! sudo npm i -g image-sequencer " | Read more » | over 5 years ago | |||
| MaggPi | "I did this! but I seem to get an access error. Is there a permission necessary? Thank You pi@raspberrypi:~ $ npm install -g image-sequencer npm W..." | Read more » | over 5 years ago | |||
| warren | " We should indeed be able to hyperlink the table of contents. Check out the links in: https://github.com/publiclab/plots2/tree/master/README.md h..." | Read more » | over 5 years ago | |||
| jenjimah | " Wow, this manual is really thorough and well explained! I have a minor technical comment: P5 - Tulip picture is referred to as Figure x, Figure ..." | Read more » | over 5 years ago | |||
| MaggPi | " @warren, got this, posted to the github site and will transition to markdown with the next update Yhx " | Read more » | over 5 years ago | |||
| warren | "Oh wow - here's the PDF - i had trouble reading the docx file at first! image-sequencer-manual.pdf @maggpi have you considered writing this in M..." | Read more » | over 5 years ago | |||
| warren | " Hi @maggPi, this is looking great! You should chime in at the weekly check-in at https://github.com/publiclab/simple-data-grapher/issues/41 and I'..." | Read more » | over 5 years ago | |||
| vibhordelgupta | "@jywarren Thanks a ton for the substantive feedback! About the changes, here is what I have in mind: Regarding the UI testing harness, I had the..." | Read more » | over 5 years ago | |||
| warren | " Hi Vibhor! Sorry we've been slow getting responses in to this. Thanks for the proposal! One thing that I wanted to ask a bit more about was how th..." | Read more » | over 5 years ago | |||
| puneetbindal8989 | "Thanks lot, I will do asap. " | Read more » | over 5 years ago | |||
| bansal_sidharth2996 | " Hi, please submit your proposal on the GSOC official website at the earliest. Thanks " | Read more » | over 5 years ago | |||
| bansal_sidharth2996 | " Hi thanks for writing the proposal. We expect dates to be written in the proposal. So, please mention the dates with the week number. Also, please..." | Read more » | over 5 years ago | |||
| bansal_sidharth2996 | " I really like your proposal Few suggestions We are looking forwards for supportive folks. Make sure to do 1. at least one PR review each week and..." | Read more » | over 5 years ago | |||
| warren | "Also, I wonder if the inverted values are due to your using a blue not red filter? I believe the ndvi equation needs to be reversed too if you do t..." | Read more » | over 5 years ago | |||
| warren | " Oh that's super, we'd love to see it. Thanks! " | Read more » | over 5 years ago | |||
| petter_mansson1 | "At the moment I have only the code on private repository. I will conduct an experiment where I try to look for changes in NDVI values corresponding..." | Read more » | over 5 years ago | |||
| warren | " Hi! Very cool! I'm curious if you've posted your code anywhere, I'd love to see it! " | Read more » | over 5 years ago | |||
| petter_mansson1 | "EDIT: Did some further testing and it was an error on my end. Used the wrong module to colormap the pictures. Ill leave the rest of the comment tho..." | 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 | |||
| warren | " Great to hear from you @maggpi! This is tremendous! " | Read more » | almost 6 years ago | |||
| warren | "@warren awards a barnstar to MaggPi for their awesome contribution! " | Read more » | almost 6 years ago | |||
| warren | "These look fantastic. Let's merge in a commit with these and consider additions or changes in a follow-up issue! Great work, @maggpi! " | Read more » | about 6 years ago |