Image Sequencer
image-sequencer

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 [![diagram-workflows.png](https://publiclab.org/system/images/photos/000/023/784/large/diagram-workflows.png)](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: ![Screen_Shot_2018-05-07_at_12.16.38_PM.png](https://publiclab.org/system/images/photos/000/024/833/large/Screen_Shot_2018-05-07_at_12.16.38_PM.png) ...


Author Comment Last activity Moderation
MaggPi "Proposed colormaps for ImageSequencer are pictured below. Please recommend any changes /new colormaps and we will try to add them with the next so..." | Read more » almost 6 years ago
warren "Yes this looks right, and I believe the default one actually has an error! I opened an issue here -- if you'd be at all interested in submitting a ..." | Read more » almost 6 years ago
MaggPi "Thx @warren and @tech4gt !!! I was able to use the import image step and have moved on to the colorbar step. The chart below compares the differen..." | Read more » almost 6 years ago
tech4gt "@warren the issue seems to be all fixed up. Thanks!! :heart: " | Read more » almost 6 years ago
warren "can you confirm? I have to leave right now but if you have follow-up fixes I can merge them in about 4 hours. " | Read more » almost 6 years ago
warren "v2.2.3 should be live momentarily; npm already published. " | Read more » almost 6 years ago
warren "Great catch both of your and thanks! Publishing a new version now. " | Read more » almost 6 years ago
tech4gt "@MaggPi The issue has been solved here https://github.com/publiclab/image-sequencer/pull/330 we will push this out to production ASAP. Thanks a lot..." | Read more » almost 6 years ago
tech4gt "@MaggPi yes you are right, I'll look into this right now!! " | Read more » almost 6 years ago
MaggPi "I was trying to use the new image sequencer colorbar option and I noticed that the Import Image/add step does not load an image. I used it before..." | Read more » almost 6 years ago
warren "Yes, go ahead! On Thu, Aug 9, 2018, 11:17 AM \<notifications@publiclab.org> wrote: Hi! There's been a response to a discussion you're invol..." | Read more » almost 6 years ago
tech4gt "Should I submit the link to this on the GSOC evaluation page? " | Read more » almost 6 years ago
tech4gt "@warren Thanks a lot :heart: " | Read more » almost 6 years ago
warren "Looks fantastic, Varun! " | Read more » almost 6 years ago
kayrufty "Very interesting post! NDVI is correlated with chlorophyll pigments, correct? Different phytoplankton types have different concentrations of chloro..." | Read more » almost 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 » almost 6 years ago
warren "Yes! I think @tech4gt is working on this very soon! There's an issue open for it too. " | Read more » almost 6 years ago
cheneyshreve ":smiley: " | Read more » almost 6 years ago
MaggPi "Wow, thanks for the great response! I did this fairly quickly and I will try to catch up with the questions: did you illuminate these separate..." | Read more » about 6 years ago
cfastie "MaggPi, This approach is quite intriguing. You are correct that NDVI was invented and then used for 40 years primarily for high altitude aerial or..." | Read more » about 6 years ago
warren "Just a note to self - as we plan out auto-registration features for this, could be good to look at #image-registration ! " | Read more » about 6 years ago
warren "https://publiclab.github.io/image-sequencer/examples/#steps=ndvi{filter:blue},colormap{colormap:fastie} " | Read more » about 6 years ago
warren "We also just tried using different colormaps, with some success! Stretched: And "fastie": " | Read more » about 6 years ago
warren "I'm just presenting on your great post on the NASA AREN call right now (https://publiclab.org/aren) and we have questions! did you illuminate the..." | Read more » about 6 years ago