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. This project is supported in part by the NASA AREN project
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
- 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 by @ccpandhare.
Read more in-depth on the Image Sequencer GitHub page.
Check out the Image Sequencer User Manual by @MaggPi: https://github.com/MargaretAN9/GSOC-2019/blob/master/ImageSequencerUserManual.md
Activities
| Purpose | Category | Status | Author | Time | Difficulty | Replications |
|---|---|---|---|---|---|---|
| Use Image Sequencer for NDVI plant analysis with 2 images | - | - | @warren | - | - | 0 replications: Try it » |
| Draft of Public Lab Image Sequencer User Manual – Comments Welcome! | - | request | @MaggPi | - | - | 0 replications: Try it » |
| Prototype: filter map tiles in real-time in a browser with ImageSequencer (NDVI Landsat) | - | - | @warren | - | - | 0 replications: Try it » |
| Use Image Sequencer for NDVI plant analysis with a modified mini sport camera | observe | review-me | @warren | 15m | easy | 0 replications: Try it » |
Activities should include a materials list, costs and a step-by-step guide to construction with photos. Learn what makes a good activity here.
Questions
| Title | Author | Updated | Likes | Comments |
|---|---|---|---|---|
| How should I modify Infragram NDVI settings for Raspberry Pi Noir orbital photos? | @brendan_stanford | over 4 years ago | 1 | 9 |
| NDVI LED Simulator | @MaggPi | over 6 years ago | 3 | 3 |
| Can more info on colormaps be added to image-sequencer? | @MaggPi | over 6 years ago | 1 | 3 |
| Is it possible to calculate average NDVI in a picture using infragram's sand box? | @Hala73 | over 6 years ago | 1 | 6 |
| How can I can make a raspberry pi camera just with the filters process the crops and immediately produce the results to a computer or to other device, without having to use the website? | @csteran | almost 7 years ago | 2 | 15 |
| How can I identify bits of plastic from the beach in an image? | @jlev | over 6 years ago | 2 | 17 |
| What is the algorithm used in generating the fastie colormap from NDVI in Infragram? | @Jtaw | almost 8 years ago | 1 | 6 |
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:
