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FARVEL BIG TECH
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  3. This illusion was new to me.

This illusion was new to me.

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  • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

    This illusion was new to me. Does whichever dot you look at turn more purple?

    Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

    https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

    https://arxiv.org/abs/2509.11582

    mwichary@mastodon.onlineM This user is from outside of this forum
    mwichary@mastodon.onlineM This user is from outside of this forum
    mwichary@mastodon.online
    wrote sidst redigeret af
    #3

    @Danpiker Oh, wow. It does, and incredibly quickly and intensely, too.

    normaloperator@mas.toN 1 Reply Last reply
    0
    • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

      This illusion was new to me. Does whichever dot you look at turn more purple?

      Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

      https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

      https://arxiv.org/abs/2509.11582

      otacke@chaos.socialO This user is from outside of this forum
      otacke@chaos.socialO This user is from outside of this forum
      otacke@chaos.social
      wrote sidst redigeret af
      #4

      @Danpiker Where is the :hover pseudo-class set? 😅

      1 Reply Last reply
      0
      • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

        This illusion was new to me. Does whichever dot you look at turn more purple?

        Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

        https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

        https://arxiv.org/abs/2509.11582

        kcanales02@mastodon.socialK This user is from outside of this forum
        kcanales02@mastodon.socialK This user is from outside of this forum
        kcanales02@mastodon.social
        wrote sidst redigeret af
        #5

        @Danpiker
        Cool! Thanks for this.
        I recently watched a YT short on color theory. That was insightful and interesting.

        1 Reply Last reply
        0
        • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

          This illusion was new to me. Does whichever dot you look at turn more purple?

          Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

          https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

          https://arxiv.org/abs/2509.11582

          hypercube@social.linux.pizzaH This user is from outside of this forum
          hypercube@social.linux.pizzaH This user is from outside of this forum
          hypercube@social.linux.pizza
          wrote sidst redigeret af
          #6

          @Danpiker holy moly that's an incredible effect

          1 Reply Last reply
          0
          • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

            This illusion was new to me. Does whichever dot you look at turn more purple?

            Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

            https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

            https://arxiv.org/abs/2509.11582

            forteller@tutoteket.noF This user is from outside of this forum
            forteller@tutoteket.noF This user is from outside of this forum
            forteller@tutoteket.no
            wrote sidst redigeret af
            #7

            @Danpiker This is trippy as hell! I also feel like the border is more distinct when it's purple, but I can't really check because they all turn purple when I look at them! 🤯

            forteller@tutoteket.noF 1 Reply Last reply
            0
            • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

              This illusion was new to me. Does whichever dot you look at turn more purple?

              Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

              https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

              https://arxiv.org/abs/2509.11582

              davidtheeviloverlord@mastodon.socialD This user is from outside of this forum
              davidtheeviloverlord@mastodon.socialD This user is from outside of this forum
              davidtheeviloverlord@mastodon.social
              wrote sidst redigeret af
              #8

              @Danpiker

              Yes. Whichever dot I focus on turns purple.

              clintruin@mastodon.socialC 1 Reply Last reply
              0
              • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                This illusion was new to me. Does whichever dot you look at turn more purple?

                Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                https://arxiv.org/abs/2509.11582

                cford@toot.thoughtworks.comC This user is from outside of this forum
                cford@toot.thoughtworks.comC This user is from outside of this forum
                cford@toot.thoughtworks.com
                wrote sidst redigeret af
                #9

                @Danpiker Not at first, because I was wearing yellow-tinted sunglasses. When I took them off yes.

                1 Reply Last reply
                0
                • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                  This illusion was new to me. Does whichever dot you look at turn more purple?

                  Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                  https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                  https://arxiv.org/abs/2509.11582

                  ? Offline
                  ? Offline
                  Gæst
                  wrote sidst redigeret af
                  #10

                  @Danpiker Fascinating! If you force your focus slowly moving towards a circle you can even get a gradiant.

                  1 Reply Last reply
                  0
                  • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                    This illusion was new to me. Does whichever dot you look at turn more purple?

                    Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                    https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                    https://arxiv.org/abs/2509.11582

                    arnebab@rollenspiel.socialA This user is from outside of this forum
                    arnebab@rollenspiel.socialA This user is from outside of this forum
                    arnebab@rollenspiel.social
                    wrote sidst redigeret af
                    #11

                    @Danpiker That’s neat! thank you!

                    1 Reply Last reply
                    0
                    • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                      This illusion was new to me. Does whichever dot you look at turn more purple?

                      Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                      https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                      https://arxiv.org/abs/2509.11582

                      bltpizza@mastodon.socialB This user is from outside of this forum
                      bltpizza@mastodon.socialB This user is from outside of this forum
                      bltpizza@mastodon.social
                      wrote sidst redigeret af
                      #12

                      @Danpiker Holding my phone at arms length all of the dots are purple.

                      1 Reply Last reply
                      0
                      • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                        This illusion was new to me. Does whichever dot you look at turn more purple?

                        Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                        https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                        https://arxiv.org/abs/2509.11582

                        daniel_bohrer@chaos.socialD This user is from outside of this forum
                        daniel_bohrer@chaos.socialD This user is from outside of this forum
                        daniel_bohrer@chaos.social
                        wrote sidst redigeret af
                        #13

                        @Danpiker interestingly it works better for me on the smaller thumbnail than on the full version of the image

                        1 Reply Last reply
                        0
                        • conchoid@mastodon.gamedev.placeC conchoid@mastodon.gamedev.place

                          @Danpiker i don't see it

                          pikestreet@ohai.socialP This user is from outside of this forum
                          pikestreet@ohai.socialP This user is from outside of this forum
                          pikestreet@ohai.social
                          wrote sidst redigeret af
                          #14

                          @conchoid @Danpiker this has never worked for me either!

                          1 Reply Last reply
                          0
                          • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                            This illusion was new to me. Does whichever dot you look at turn more purple?

                            Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                            https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                            https://arxiv.org/abs/2509.11582

                            mhwombat@mastodon.socialM This user is from outside of this forum
                            mhwombat@mastodon.socialM This user is from outside of this forum
                            mhwombat@mastodon.social
                            wrote sidst redigeret af
                            #15

                            @Danpiker For me, the dot that I'm looking at doesn't change, but the remaining dots fade into the background.

                            amosmulder@mastodon.socialA P 2 Replies Last reply
                            0
                            • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                              This illusion was new to me. Does whichever dot you look at turn more purple?

                              Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                              https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                              https://arxiv.org/abs/2509.11582

                              philsalkie@mindly.socialP This user is from outside of this forum
                              philsalkie@mindly.socialP This user is from outside of this forum
                              philsalkie@mindly.social
                              wrote sidst redigeret af
                              #16

                              @Danpiker

                              Have a look at:

                              https://gamesx.com/misctech/visual.htm

                              Your eyes have much lower resolution in blue light than in red or green, the article demonstrates that increasing the size of the blue pixels by 9 times (3x3) makes an almost imperceptible change in the image. Link rot has taken the extra images and a diagram showing a proposed pixel layout of a big blue diamond surrounded by small red and green squares.

                              eliocamp@mastodon.socialE 1 Reply Last reply
                              0
                              • philsalkie@mindly.socialP philsalkie@mindly.social

                                @Danpiker

                                Have a look at:

                                https://gamesx.com/misctech/visual.htm

                                Your eyes have much lower resolution in blue light than in red or green, the article demonstrates that increasing the size of the blue pixels by 9 times (3x3) makes an almost imperceptible change in the image. Link rot has taken the extra images and a diagram showing a proposed pixel layout of a big blue diamond surrounded by small red and green squares.

                                eliocamp@mastodon.socialE This user is from outside of this forum
                                eliocamp@mastodon.socialE This user is from outside of this forum
                                eliocamp@mastodon.social
                                wrote sidst redigeret af
                                #17

                                @PhilSalkie @Danpiker Huh. Does this means that we shouldn't be writing small text or rendering small details in blue?

                                philsalkie@mindly.socialP 1 Reply Last reply
                                0
                                • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                                  This illusion was new to me. Does whichever dot you look at turn more purple?

                                  Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                                  https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                                  https://arxiv.org/abs/2509.11582

                                  rletot@mamot.frR This user is from outside of this forum
                                  rletot@mamot.frR This user is from outside of this forum
                                  rletot@mamot.fr
                                  wrote sidst redigeret af
                                  #18

                                  @Danpiker
                                  Amazing, I feel like my smartphone can track my eyes 😃

                                  1 Reply Last reply
                                  0
                                  • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                                    This illusion was new to me. Does whichever dot you look at turn more purple?

                                    Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                                    https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                                    https://arxiv.org/abs/2509.11582

                                    howtophil@mastodon.socialH This user is from outside of this forum
                                    howtophil@mastodon.socialH This user is from outside of this forum
                                    howtophil@mastodon.social
                                    wrote sidst redigeret af
                                    #19

                                    @Danpiker It turns... a slightly darker blue, I think?

                                    1 Reply Last reply
                                    0
                                    • danpiker@mathstodon.xyzD danpiker@mathstodon.xyz

                                      This illusion was new to me. Does whichever dot you look at turn more purple?

                                      Pretty neat how clearly this lets you see the reduced sensitivity to blue light in the very centre of your vision.

                                      https://www.schulz-hildebrandt.com/9-purple-dots-illusion/

                                      https://arxiv.org/abs/2509.11582

                                      cherieherrjones@mastodon.socialC This user is from outside of this forum
                                      cherieherrjones@mastodon.socialC This user is from outside of this forum
                                      cherieherrjones@mastodon.social
                                      wrote sidst redigeret af
                                      #20

                                      @Danpiker I definitely see it. Very cool!

                                      1 Reply Last reply
                                      0
                                      • eliocamp@mastodon.socialE eliocamp@mastodon.social

                                        @PhilSalkie @Danpiker Huh. Does this means that we shouldn't be writing small text or rendering small details in blue?

                                        philsalkie@mindly.socialP This user is from outside of this forum
                                        philsalkie@mindly.socialP This user is from outside of this forum
                                        philsalkie@mindly.social
                                        wrote sidst redigeret af
                                        #21

                                        @eliocamp @Danpiker
                                        It probably means not just that but we should be compressing the blue layer much more than the green or red when doing lossy compression algorithms.

                                        1 Reply Last reply
                                        0
                                        • mhwombat@mastodon.socialM mhwombat@mastodon.social

                                          @Danpiker For me, the dot that I'm looking at doesn't change, but the remaining dots fade into the background.

                                          amosmulder@mastodon.socialA This user is from outside of this forum
                                          amosmulder@mastodon.socialA This user is from outside of this forum
                                          amosmulder@mastodon.social
                                          wrote sidst redigeret af
                                          #22

                                          @mhwombat @Danpiker Interesting, I see both effects.

                                          1 Reply Last reply
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