How did "Peace for Triple Piano" shoot, Doppelganger seems to play one after another with a mysterious piano with three keys?

Movie seemingly seamlessly joins the images shot by 360 degree celestial camera and seemingly doppelganger plays mysterious piano with three keys "Peace for Triple Piano"Has been released. At the same time, making has been made public, it has been revealed a terribly precise work that was created over 10 weeks with the cooperation of Mathematician Henry Segerman.

Peace for Triple Piano | Vi Hart
http://vihart.com/peace-for-triple-piano/

First, the way three same women in one space play the piano are as follows. The movie is a 360 degree image, and you can see where you like by dragging.

Peace for Triple Piano - YouTube


A 360 degree image as if it was shot with a celestial camera started. A woman is singing a song while playing the piano.


After finishing playing one phrase, the woman stood up and moved.


And we will receive the score from the man over the piano.


And I played the piano with two keyboards back to back. The same woman stands like a doppelganger for some reason on the pillar behind the room.


A woman who was in the pillar took the score that the woman who was playing the piano previously put ... ....


This time I play the piano by myself ...... It loops.


You can see the place you like at 360 degrees by dragging the video published on YouTube, but you can see the mysterious piano as if you have multiple keys like the same woman who has 3 people It will be playing "is a mysterious finish that is rich. There are scenes where women play the piano at the same time, but you can see that the movements of hands are disjointed and playing another phrase.


How is this movie made? It is published in the following movie.

The Making of "Peace for Triple Piano" - YouTube


What was used for shootingAll-sky camera RICOH THETA V. When you horizontally expand the image shot with this camera, it looks like the following ...


Return this to the celestial sphere ......


When deploying from the ceiling direction it will look like this. It looks like the camera was placed just above the keyboard of the piano.


The state of the room is like this. There is only one piano.


If you copy and paste this image into three, it will become the world that was projected in "Peace for Triple Piano".


When deployed horizontally like the first it looks like this.


This movie is made of "three parts composed of three phrases A, B, C", and the structure itself is simple.


The following is an explanation of the structure of the movie. The vertical axis shows time, the horizontal axis shows space, and pictures written A, B, C are lining up. At this time, looking at the column, you can see that the phrase A, B, C advances with the progress of time, and when looking at the row, you can see that the space playing the same phrase appears in the three parts.


Here, if you shift the column named α · β · γ one frame at a time ...


Three parts separated by 120 degrees each project space that draws a different phrase.


Looking at the state before shifting the frame at 360 degrees is like this. Since it is just the state where three copies of the same scene have been copied, it does not look like three people are in the same place like the finished movie. It becomes "360 degree image which was divided into three by 120 degrees" to the last.


However, if you shift the frame and attach A · B · C parts to be present at the same time ... ...


By rotating the 360 ​​degree image round, you can see another scene. Among 120 degrees out of 360 degrees, women play the piano ......


In another 120 degrees, the man will ring the triangle according to the women's piano, and so on. In this way, I told that I looped both time and space.


The problem here is the joint of the images of the three parts. If you show what kind of composition each frame is ... ...


First there is a piano in the center of the frame. It was shown with a brown pen.


It was a music stand that was written with a pink line. It is on the left side of the piano.


And the green line on the right shows the hinge of the piano.


I will cut out only the A scene and see.


When a woman starts walking from piano to hinge with α ......


In β, the same happens with a delay of 20 seconds.


Similarly, the same scene is played back with γ after 20 seconds of β.


Meanwhile, the man will walk in a different direction and pass the score to the woman through the piano.


In other words, it is necessary for a woman of β · C to receive a musical score handed by a man at α · A.


When you connect the movement of the score in each scene with threads, it looks like this. A woman has a musical score and hands it to a man.


Furthermore, from a man, I went to the hands of a woman over the piano ......


The score is placed on the music stand. In a movie, it seems that a woman who moved about 120 degrees seems to be taking notation from the right, but in fact the woman is around 360 degrees around the piano.


Such editing work was done by software, but ...


The problem is that it is impossible to create a loop as a whole depending on the direction and place of movement of a person. People seem to have disappeared on the way at the joint of video and video.


However, if you move the position slightly, you can connect from A to B ......


It is interesting to finally complete the whole loop with C skipped.


However, since C is skipped, in order for men to continue to appear on the screen, we need to walk around the piano with 2 phrases, which is one phrase if it is originally intended. This is why men are playing the triangle on the way.


At this time, if the movement is too late, two men will appear on the screen. This fine adjustment is a very difficult place, it seems that software editing was used.


The difficulty in other respects is the movement of the piano itself. Because the three parts are combined to make one scene, the movement in the piano reflects another scene in the right half and the left half.


Therefore, using the pedal will cause problems. When I step on the pedal ......


Damper inside the piano leaves the string all at once


However, in the case of this movie, it will affect only one half of the piano (as it seems) that there are three pedals. From here, it is said that I had to give up using the pedal.


In this way, the movie was created while solving a number of subjects one by one. The time it took to complete the movie is about 10 weeks.