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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

    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
                                  0
                                  • davidtheeviloverlord@mastodon.socialD davidtheeviloverlord@mastodon.social

                                    @Danpiker

                                    Yes. Whichever dot I focus on turns purple.

                                    clintruin@mastodon.socialC This user is from outside of this forum
                                    clintruin@mastodon.socialC This user is from outside of this forum
                                    clintruin@mastodon.social
                                    wrote sidst redigeret af
                                    #23

                                    @davidtheeviloverlord @Danpiker
                                    Same.

                                    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

                                      beckermatic@mastodon.laB This user is from outside of this forum
                                      beckermatic@mastodon.laB This user is from outside of this forum
                                      beckermatic@mastodon.la
                                      wrote sidst redigeret af
                                      #24

                                      @Danpiker It also creates a blue trail when I scroll the image up and down. Neat!

                                      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

                                        axel_hartmann@digitalcourage.socialA This user is from outside of this forum
                                        axel_hartmann@digitalcourage.socialA This user is from outside of this forum
                                        axel_hartmann@digitalcourage.social
                                        wrote sidst redigeret af
                                        #25

                                        @Danpiker - where to use?
                                        guest bathroom wallpaper or <insert evil laughter> tablecloth

                                        axel_hartmann@digitalcourage.socialA 1 Reply Last reply
                                        0
                                        • axel_hartmann@digitalcourage.socialA axel_hartmann@digitalcourage.social

                                          @Danpiker - where to use?
                                          guest bathroom wallpaper or <insert evil laughter> tablecloth

                                          axel_hartmann@digitalcourage.socialA This user is from outside of this forum
                                          axel_hartmann@digitalcourage.socialA This user is from outside of this forum
                                          axel_hartmann@digitalcourage.social
                                          wrote sidst redigeret af
                                          #26

                                          @Danpiker or: legal texts

                                          1 Reply Last reply
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