Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
cmuratori's profile
Casey Muratori
Casey Muratori
Casey Muratori
@cmuratori

Tweets

Casey Muratori

@cmuratori

I'm worried that the baby thinks people can't change.

Seattle
caseymuratori.com
Joined March 2009

Tweets

  • © 2021 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    Casey Muratori‏ @cmuratori 5 Mar 2019

    Long overdue post, "Stable Filtering - Part 1", which discusses a seemingly overlooked filtering concept important to motion compensation filters: https://caseymuratori.com/blog_0035  Special treat: images of the total garbage produced by the h.264 / HEVC filters when applied multiple times.

    1:11 PM - 5 Mar 2019
    • 47 Retweets
    • 181 Likes
    • 𝖖𝖚𝖎𝖊𝖓 LunarG TheRoboZ (Andrea Baldiraghi) Merlyn Morgan-Graham Dave Hooper Gennady Feldman Bill Merrill Dietmar Suoch mebiusbox
    13 replies 47 retweets 181 likes
      1. New conversation
      2. Johnathon Selstad‏ @makeshifted 5 Mar 2019
        Replying to @cmuratori

        Super interesting article! Have you tested jittering the "amount-of-shift" with each filter pass? Perhaps it only converges with fixed successive offsets (or even just half-pixel offsets)...

        1 reply 0 retweets 0 likes
      3. Alan the Wolfe-man 👽 🐺 🎃‏ @Atrix256 6 Mar 2019
        Replying to @makeshifted @cmuratori

        If jittering, make sure and try a good 2d low discrepancy sequence, or 2d blue noise. 😀

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. New conversation
      2. skolskoly‏ @skolskoly 5 Mar 2019
        Replying to @cmuratori

        I believe the property of your filter that is preventing the ringing artifacts could be linear phase. I plugged your examples in here, and yours seems to be the only one with the property. https://sooeet.com/math/online-fft-calculator.php …

        1 reply 1 retweet 8 likes
      3. tanh(mmalex)  🦄‏ @mmalex 6 Mar 2019
        Replying to @skolskoly @cmuratori

        i think youre onto something. intuitively, non linear phase means that effectively different frequency components are actually scrolling by different amounts!

        1 reply 0 retweets 2 likes
      4. Show replies
      1. Tim‏ @FractalOutlook 5 Mar 2019
        Replying to @cmuratori

        Great article! Can't wait for some serious power-math experts to chime in and find the "best" solution! Following in anticipation of part 2!

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. New conversation
      2. Adam Rosenfield‏ @adamhiker 5 Mar 2019
        Replying to @cmuratori

        My thinking is that an ideal filter here would be the square root of an NxN matrix M = {{0, 1, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1}, {1, 0, 0, 0}} that is an identity matrix shifted over by 1. Non-integer matrix powers can be computed by diagonalizing/finding the eigenvectors.

        1 reply 0 retweets 0 likes
      3. Adam Rosenfield‏ @adamhiker 5 Mar 2019
        Replying to @adamhiker @cmuratori

        E.g. for a 7-pixel image, sqrt(M) = {{0.641994, 0.641994, -0.229125, 0.158559, -0.142857, 0.158559, -0.229125}, ...}, where each successive row is the previous rotated to the right. Two successive applications of this kernel should produce the *exact* original image shifted 1 px

        1 reply 0 retweets 0 likes
      4. Show replies
      1. Jari Komppa‏ @Sol_HSA 5 Mar 2019
        Replying to @cmuratori

        typos: "windowed sync", "mathmetical"

        0 replies 0 retweets 1 like
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Jari Komppa‏ @Sol_HSA 5 Mar 2019
        Replying to @cmuratori

        re: testing, you could diff every second frame and see when the difference goes down to zero, that would show whether your hypothesis of convergence is true. I also wonder if the pixel format matters re: convergence. Are these r8g8b8 buffers or 32-bit float ones?

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. New conversation
      2. Jacob Christian Munch-Andersen‏ @NoHatCoder 6 Mar 2019
        Replying to @cmuratori

        If you want to apply a filter a gazillion times you can multiply it by itself, creating a filter that is equivalent to two applications, then repeat the process to make 4x, 8x etc. filters.

        2 replies 0 retweets 1 like
      3. David Thomas‏ @davidthomas426 6 Mar 2019
        Replying to @NoHatCoder @cmuratori

        But you end up with lots of taps.

        1 reply 0 retweets 0 likes
      4. Show replies

    Loading seems to be taking a while.

    Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

      Promoted Tweet

      false

      • © 2021 Twitter
      • About
      • Help Center
      • Terms
      • Privacy policy
      • Cookies
      • Ads info