6 ms·

Your Name in Landsat

234 points by warrenm 2y ago

excalibur 2y ago
This does have a profanity filter, but it's a bit rusty. Minutes of quality entertainment for 14-year-old boys of all ages.
- KTibow 2y ago
  Your comment made me check the code. IMO it isn't very clean, but if it works it works I guess.
diggan 2y ago
Maybe it's just me, but I'm having trouble seeing the "N"s in the images: https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/n_0.jpg https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu... https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/n_1.jpg https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu... https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/n_2.jpg https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu... That last one, yeah maybe, but gets kind of lost in the noise. The two first I have no idea how it's supposed to be an N. Cool little experiment none the less :)
- xattt 2y ago
  Cursive lower-case n.
  - diggan 2y ago
    Oh, thanks. That's what I get for skipping cursive classes in school.
    - CoastalCoder 2y ago
      You could try to take the class again. Any guess what the class would be called? :)
      - diggan 2y ago
        Those were classes we had in primary school in Sweden more than 20 years ago, in "Lågstadiet" (Lower stage - mandatory school in English?), when we were like from 7 to 9 years old or something. Unlikely to even attempt to go back there :)
        CoastalCoder 2y ago
        I completely respect your refusal to acknowledge my terrible pun :) I remember having to learn cursive on 2nd grade in the US, so I would have been about 8 at the time. Seems like a pretty obsolescent skill these days.
        xattt 2y ago
        ! Having cursive under your belt helps you learn the rules, so you can break them later on as you develop a personal style. I’ve worked in roles where I had a lot of hand writing to do. If I used printing, it would take about three times as long than if I used my shorthand. Even taking notes in lectures, I could create notes by hand much faster than I could transcribe with a keyboard.
        kccqzy 2y ago
        For some reason it never occurred to me that cursive is related to shorthand. I did self study cursive a little bit when in high school, but I simply recognized it as a way to write things that are more beautiful even though to modern eyes it might be more difficult to read. I did remember annoying a few teachers in high school when my work looked like the handwriting in https://mastodon.social/@waldoj/113082201727675702 https://mastodon.social/@waldoj/113082201727675702 and the teachers spent extra time understanding my writing. It never occurred to me that there is a shorthand to increase my own efficiency.
hagendaasalpine 2y ago
snippet to view all the letters at once <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Landsat Alphabet Viewer</title> <style> body { font-family: Arial, sans-serif; text-align: center; } #imageContainer { display: flex; flex-wrap: wrap; justify-content: center; } img { width: 100px; height: 100px; margin: 5px; object-fit: cover; } </style> </head> <body> <h1>Landsat Alphabet Viewer</h1> <div id="imageContainer"></div> <script> const letters = { 'A': 3, 'B': 1, 'C': 2, 'D': 1, 'E': 3, 'F': 1, 'G': 0, 'H': 1, 'I': 4, 'J': 2, 'K': 1, 'L': 3, 'M': 2, 'N': 2, 'O': 1, 'P': 1, 'Q': 1, 'R': 3, 'S': 2, 'T': 1, 'U': 2, 'V': 3, 'W': 1, 'X': 2, 'Y': 2, 'Z': 1 }; const container = document.getElementById('imageContainer'); const baseUrl = 'https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/'; for (const [letter, maxNum] of Object.entries(letters)) { for (let i = 0; i <= maxNum; i++) { const img = document.createElement('img'); img.src = `${baseUrl}${letter.toLowerCase()}_${i}.jpg`; img.alt = `${letter}_${i}`; img.title = `${letter}_${i}`; container.appendChild(img); } } </script> </body> </html>
- sharpshadow 2y ago
  Your comment activates Reader Mode on Safari mobile automatically.
  - guessmyname 2y ago
    It does? Mine seems to load this page just like any other comment section. I’m using iOS 16.7.10, so perhaps Reader Mode activates automatically on higher versions. I’m curious to test this a bit more but, sadly, my phone is out of warranty for non-security updates so I’ll have believe that what you say is true without testing anything.
    - Jerrrrrrry 2y ago
kschaul 2y ago
How did they locate these particular images? I would love to read something on that, or similar projects looking across satellite imagery for specific patterns.
- indeed30 2y ago
  Easiest way is going to be to downsample the images and then apply a pre-trained classifier that can ignore the fact these are sat images. You could probably turn them into 28x28 greyscale and then use a model trained on handwritten characters, like EMNIST. Whatever approach you take, you'll probably be selecting the final set by hand, so it's just about building the candidate set in an efficient manner. Low absolute accuracy isn't really an issue as long as you end up with a managable set to review.
  - AnotherGoodName 2y ago
    There simply doesn’t seem to be that many different images so I can imagine an even easier way than an image classifier. As you work through your day as a satellite image person (I don’t know the job title, sorry) and see a shape that looks like a letter screenshot and save it. You’ll have an alphabet in a very short amount of time. Given the repeats of letters I’m seeing I think that’s all they’ve done here.
Brajeshwar 2y ago
I was showing this to my daughter a few days back - naming her, her dolls, and what not. Between Landsat and Sentinel satellites, there are over 77TB of free satellite data available for public use every month. Lot can be done while a lot of these data are wasted and not-so-usable. And we have fun things like lettering words with earth's landscape. Have fun.
clan 2y ago
Love this! But seems to be hugged to death. The images load extremely slowly. This can be confusing as you do not see any spinner or indication that they are loading. But they do come if you are patient. As you have some letters in the cache they render instantly so to the users it looks totally broken. Unless your linger on the page and the letters snaps in 20 seconds later (one by one). An empty place holder (so you can see the space) until the letter loads would be nice. Maybe even a "Loading" placeholder text for each letter. An animated (fake) spinner would be a nice visual cue. Then swap the image when it is loaded.
- bookofjoe 2y ago
  Loads instantly for me.
AnotherGoodName 2y ago
It defaults to “landsat” on loading for those scratching their heads like I was (lanisal? What is lanisal!?)
hammock 2y ago
Reminiscent of the famous Butterfly Alphabet photographic artwork: https://mymodernmet.com/kjell-bloch-sandved-butterfly-alphabet/ https://mymodernmet.com/kjell-bloch-sandved-butterfly-alphab...
yardstick 2y ago
Would be cool to be able to cycle through images for a specific letter in a word. So you can refine the look.
alberth 2y ago
I love the logo. And it’s from a government agency. Direct link: https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/titles/CampLandsat.png https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu...

234 points by warrenm 2y ago

This does have a profanity filter, but it's a bit rusty. Minutes of quality entertainment for 14-year-old boys of all ages.

KTibow 2y ago
Your comment made me check the code. IMO it isn't very clean, but if it works it works I guess.

diggan 2y ago

Maybe it's just me, but I'm having trouble seeing the "N"s in the images: https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/n_0.jpg https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu... https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/n_1.jpg https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu... https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/n_2.jpg https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu... That last one, yeah maybe, but gets kind of lost in the noise. The two first I have no idea how it's supposed to be an N. Cool little experiment none the less :)

xattt 2y ago
Cursive lower-case n.
- diggan 2y ago
  Oh, thanks. That's what I get for skipping cursive classes in school.
  - CoastalCoder 2y ago
    You could try to take the class again. Any guess what the class would be called? :)
    - diggan 2y ago
      Those were classes we had in primary school in Sweden more than 20 years ago, in "Lågstadiet" (Lower stage - mandatory school in English?), when we were like from 7 to 9 years old or something. Unlikely to even attempt to go back there :)
      - CoastalCoder 2y ago
        I completely respect your refusal to acknowledge my terrible pun :) I remember having to learn cursive on 2nd grade in the US, so I would have been about 8 at the time. Seems like a pretty obsolescent skill these days.
        xattt 2y ago
        ! Having cursive under your belt helps you learn the rules, so you can break them later on as you develop a personal style. I’ve worked in roles where I had a lot of hand writing to do. If I used printing, it would take about three times as long than if I used my shorthand. Even taking notes in lectures, I could create notes by hand much faster than I could transcribe with a keyboard.
        kccqzy 2y ago
        For some reason it never occurred to me that cursive is related to shorthand. I did self study cursive a little bit when in high school, but I simply recognized it as a way to write things that are more beautiful even though to modern eyes it might be more difficult to read. I did remember annoying a few teachers in high school when my work looked like the handwriting in https://mastodon.social/@waldoj/113082201727675702 https://mastodon.social/@waldoj/113082201727675702 and the teachers spent extra time understanding my writing. It never occurred to me that there is a shorthand to increase my own efficiency.

hagendaasalpine 2y ago

snippet to view all the letters at once <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Landsat Alphabet Viewer</title> <style> body { font-family: Arial, sans-serif; text-align: center; } #imageContainer { display: flex; flex-wrap: wrap; justify-content: center; } img { width: 100px; height: 100px; margin: 5px; object-fit: cover; } </style> </head> <body> <h1>Landsat Alphabet Viewer</h1> <div id="imageContainer"></div> <script> const letters = { 'A': 3, 'B': 1, 'C': 2, 'D': 1, 'E': 3, 'F': 1, 'G': 0, 'H': 1, 'I': 4, 'J': 2, 'K': 1, 'L': 3, 'M': 2, 'N': 2, 'O': 1, 'P': 1, 'Q': 1, 'R': 3, 'S': 2, 'T': 1, 'U': 2, 'V': 3, 'W': 1, 'X': 2, 'Y': 2, 'Z': 1 }; const container = document.getElementById('imageContainer'); const baseUrl = 'https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/images/'; for (const [letter, maxNum] of Object.entries(letters)) { for (let i = 0; i <= maxNum; i++) { const img = document.createElement('img'); img.src = `${baseUrl}${letter.toLowerCase()}_${i}.jpg`; img.alt = `${letter}_${i}`; img.title = `${letter}_${i}`; container.appendChild(img); } } </script> </body> </html>

sharpshadow 2y ago
Your comment activates Reader Mode on Safari mobile automatically.
- guessmyname 2y ago
  It does? Mine seems to load this page just like any other comment section. I’m using iOS 16.7.10, so perhaps Reader Mode activates automatically on higher versions. I’m curious to test this a bit more but, sadly, my phone is out of warranty for non-security updates so I’ll have believe that what you say is true without testing anything.
  - Jerrrrrrry 2y ago

kschaul 2y ago

How did they locate these particular images? I would love to read something on that, or similar projects looking across satellite imagery for specific patterns.

indeed30 2y ago
Easiest way is going to be to downsample the images and then apply a pre-trained classifier that can ignore the fact these are sat images. You could probably turn them into 28x28 greyscale and then use a model trained on handwritten characters, like EMNIST. Whatever approach you take, you'll probably be selecting the final set by hand, so it's just about building the candidate set in an efficient manner. Low absolute accuracy isn't really an issue as long as you end up with a managable set to review.
- AnotherGoodName 2y ago
  There simply doesn’t seem to be that many different images so I can imagine an even easier way than an image classifier. As you work through your day as a satellite image person (I don’t know the job title, sorry) and see a shape that looks like a letter screenshot and save it. You’ll have an alphabet in a very short amount of time. Given the repeats of letters I’m seeing I think that’s all they’ve done here.

Brajeshwar 2y ago

I was showing this to my daughter a few days back - naming her, her dolls, and what not. Between Landsat and Sentinel satellites, there are over 77TB of free satellite data available for public use every month. Lot can be done while a lot of these data are wasted and not-so-usable. And we have fun things like lettering words with earth's landscape. Have fun.

clan 2y ago

Love this! But seems to be hugged to death. The images load extremely slowly. This can be confusing as you do not see any spinner or indication that they are loading. But they do come if you are patient. As you have some letters in the cache they render instantly so to the users it looks totally broken. Unless your linger on the page and the letters snaps in 20 seconds later (one by one). An empty place holder (so you can see the space) until the letter loads would be nice. Maybe even a "Loading" placeholder text for each letter. An animated (fake) spinner would be a nice visual cue. Then swap the image when it is loaded.

bookofjoe 2y ago
Loads instantly for me.

AnotherGoodName 2y ago

It defaults to “landsat” on loading for those scratching their heads like I was (lanisal? What is lanisal!?)

hammock 2y ago

Reminiscent of the famous Butterfly Alphabet photographic artwork: https://mymodernmet.com/kjell-bloch-sandved-butterfly-alphabet/ https://mymodernmet.com/kjell-bloch-sandved-butterfly-alphab...

yardstick 2y ago

Would be cool to be able to cycle through images for a specific letter in a word. So you can refine the look.

alberth 2y ago

I love the logo. And it’s from a government agency. Direct link: https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/public/titles/CampLandsat.png https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu...