this post was submitted on 05 Jun 2024
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    submitted 5 months ago* (last edited 5 months ago) by ordellrb@lemmy.world to c/linuxmemes@lemmy.world
     
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    [–] meekah@lemmy.world 27 points 5 months ago (3 children)

    Running OCR every second sounds like a great way to choke your CPU

    [–] DannyBoy@sh.itjust.works 6 points 5 months ago (1 children)

    Once a minute, and only if the screen contents change. I imagine there's something lightweight enough.

    [–] MacNCheezus@lemmy.today 6 points 5 months ago* (last edited 5 months ago) (1 children)

    In order to be certified for running Recall, machines currently must have an NPU (Neural Processing Unit, basically an AI coprocessor). I assume that is what makes it practical to do by offloading the required computation from the CPU.

    Apparently it IS possible to circumvent that requirement using a hack, which is what some of the researchers reporting on it have done, but I haven't read any reports on how that affects CPU usage in practice.

    [–] wick@lemm.ee 1 points 5 months ago

    Recall analyses each screenshot and uses AI or whatever to add tags to it. I'd assume that's what the NPU is used for.

    [–] RandomLegend@lemmy.dbzer0.com 3 points 5 months ago

    You could optimize it though.

    As said one comment above, check if it's the same composition as before and don't take a screenshot if it didn't change. Make some rules to filter out video content so if you have a youtube video open it doesn't take a screenshot every second just because the video is running.

    Or you could actually integrate this with your window manager. Only take a screenshot if you move / resize / open / close a window. Make a small extension for browsers that tell it to make a screenshot if you scroll / close / open a page. Then you don't have to make a screenshot and compare with the one before.

    This wouldn't be as thorough as just forcing screenshots all the time and you would probably not catch stuff like writing a text in libreoffice as you don't change anything with the window. But it could be a resourceful way to do that.

    And if for example no screenshot was taken for 1 minute because nothing called for that, you could just take one regardless. That way you have a minimum of one screenshot per minute or as often as window manager / browser calls for it.

    [–] Evotech@lemmy.world 2 points 5 months ago

    That's why the new cpus have npus on board...