[HN Gopher] Your Name in Landsat
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Your Name in Landsat
Author : warrenm
Score : 155 points
Date : 2024-09-03 14:43 UTC (3 days ago)
(HTM) web link (landsat.gsfc.nasa.gov)
(TXT) w3m dump (landsat.gsfc.nasa.gov)
| diggan wrote:
| 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/pu...
|
| https://landsat.gsfc.nasa.gov/apps/YourNameInLandsat-main/pu...
|
| 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 wrote:
| Cursive lower-case n.
| diggan wrote:
| Oh, thanks. That's what I get for skipping cursive classes in
| school.
| CoastalCoder wrote:
| You could try to take the class again.
|
| Any guess what the class would be called? :)
| diggan wrote:
| Those were classes we had in primary school in Sweden
| more than 20 years ago, in "Lagstadiet" (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 wrote:
| 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 wrote:
| !
|
| 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 wrote:
| 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 and
| the teachers spent extra time understanding my writing.
|
| It never occurred to me that there is a shorthand to
| increase my own efficiency.
| mananaysiempre wrote:
| Side note: in the word "shorthand" itself, the "hand" is
| "handwriting; style of penmanship"
| (https://en.wiktionary.org/wiki/hand#English meaning 10),
| cf. "round hand" etc.
| toast0 wrote:
| > 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.
|
| That sounds more like calligraphy, IMHO. Many of the
| letter forms for some styles of cursive are similar to
| what happens if you write in block letters without
| lifting your pen. Depending on the particular style,
| there's some exceptions and embelleshments, but if you're
| taking a lot of notes in a hurry with a pen in block
| letters it kind of devolves into cursive naturally.
|
| Shorthand is generally phonetic, so that's a different
| skill, IMHO.
| kccqzy wrote:
| Yea I recognized that writing cursive is faster because I
| don't need to lift the pen that often. But the question
| is whether that makes the reader do more work. A few
| teachers in high school preferred that I stop because it
| was more troublesome for them to read.
|
| In any case I find any kind of handwriting to be slower
| than typing, and I am not even a good typist.
| reaperducer wrote:
| _I simply recognized it as a way to write things that are
| more beautiful_
|
| The whole point of cursive is to make writing easier and
| faster than printing.
|
| Once you know it, and aren't struggling against it, it
| becomes very fluid and your hand muscles hurt less than
| if you print.
| dylan604 wrote:
| Pretty much the only use of cursive today is for
| signatures. To me, the only rule you need to remember is
| that the signature you use for legal documents should not
| be the same as what you use for autographs. Are there any
| others that make sense for today's limited real world use
| of cursive?
| reaperducer wrote:
| _Seems like a pretty obsolescent skill these days._
|
| I had a younger coworker tell me that he can't read any
| cursive. I asked him how he finds Walgreens, or which
| license plates are from California.
|
| People act like it's Klingon. If second-graders can
| figure it out, an adult can make an effort.
| buildsjets wrote:
| That is a cursive-like font which is designed for easy
| readability. A formal handwritten document like the
| Declaration of Independence is slow and difficult to
| read. And an informal documents like San Pepys diaries
| are nigh indecipherable to modern eyes.
|
| https://www.magd.cam.ac.uk/pepys/virtual-
| exhibitions/diary#:....
| bahmboo wrote:
| Recursive
| tejtm wrote:
| history
| hagendaasalpine wrote:
| 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 wrote:
| Your comment activates Reader Mode on Safari mobile
| automatically.
| guessmyname wrote:
| 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.
| dima55 wrote:
| File a bug report?
| kschaul wrote:
| 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 wrote:
| 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 wrote:
| 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 wrote:
| 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 wrote:
| 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.
| AnotherGoodName wrote:
| It defaults to "landsat" on loading for those scratching their
| heads like I was (lanisal? What is lanisal!?)
| hammock wrote:
| Reminiscent of the famous Butterfly Alphabet photographic
| artwork: https://mymodernmet.com/kjell-bloch-sandved-butterfly-
| alphab...
| yardstick wrote:
| Would be cool to be able to cycle through images for a specific
| letter in a word. So you can refine the look.
| excalibur wrote:
| This does have a profanity filter, but it's a bit rusty. Minutes
| of quality entertainment for 14-year-old boys of all ages.
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(page generated 2024-09-06 23:00 UTC)