[HN Gopher] Telling the time with computer vision ___________________________________________________________________ Telling the time with computer vision Author : jinay Score : 6 points Date : 2021-12-18 16:25 UTC (1 days ago) (HTM) web link (blog.jinay.dev) (TXT) w3m dump (blog.jinay.dev) | warrenm wrote: | >Few things are more embarrassing than having to spend 20 seconds | trying to figure out how much time you have left on a | standardized test | | This is a sorta-clever technique ... but if you can't have your | phone, this is 100% useless | | There are only three proper ways to worry about how much time you | have left on a test: | | - don't worry: keep going until you're done or you run out of | time (the best option) | | - wear a watch | | - periodically look at the countdown timer on the test (if it's | either being done on a computer, or if there's a timer in the | room) | jinay wrote: | You're completely right. If you had your phone you could just | look at the phone time anyways :) | | As I mentioned in the conclusion, there wasn't really meant to | be any practical use for this project. | warrenm wrote: | It's certainly an amusing rabbit trail, though :) | warrenm wrote: | I could see a _potential_ for usefulness if you wanted to | categorize all of the images you had of clocks with what | times are listed to be able to put them in [quasi] | chronological order | warrenm wrote: | And then - maybe - auto-select a clock image that matched | the publish time, for example, of a blog post? | stavros wrote: | You know what I call a project without a practical use? Art. | W0lf wrote: | I appreciate that the author was looking to solve this problem | using a _classical_ CV approach just like in the good ol' days as | opposed to just train another ANN that predicts the time for a | sufficiently large training set. | | As for the detection of the hands itself: I think I'd try to look | for them in fourier space to get a more robust result (to address | noisy dials like in the last examples). ___________________________________________________________________ (page generated 2021-12-19 23:00 UTC)