Military Review

"Often the factory drawing and the real machine have a tangible difference."

29

Continuation of the interview with World of Tanks artist-supervisor Mikhail Ritvinsky about how photorealistic models of military equipment are created in the game. The first part of the article can be read here.


- Photogrammetry affects the angles of inclination of armor, shape tank - and therefore on the gameplay. Please tell us more about this.
- An important aspect, with which photogrammetry helps us a lot, is the reconstruction of complex cast shapes. This is especially important for Soviet tanks. For example, one of the very first tanks that we have created using photogrammetry is the Soviet IS-3.

Initially, we made his model in the classic way - based on the drawing. But the drawings are very imperfect - we do not even always have access to them, and in those that we manage to get, there is not enough information about the shape of the tower, some projections and sections. And the shape of the cast tower is actually very complex. In addition, often the factory drawing and the real car have a tangible difference. Therefore, we came to the Stalin Line, where there are two IS-3s, and scanned them.


The experience of scanning the IS-3 on the Stalin Line showed us that tanks manufactured at different factories can have noticeable differences both in the angles of inclination of the frontal armor and in the shapes of the cast turrets. When we compared both models - according to drawings and photogrammetry - we noticed a rather significant difference, it became a discovery for us.

At World of Tanks, we do not make deliberate tolerances for the corners of the armor. The angles of the armor are respected as much as possible in accordance with the factory data or photogrammetry data.

The shape of the towers, especially the cast ones, greatly affects the gameplay - and in reality, it largely determines the protection of the crew. If it is wrong to make some kind of trick of the sight or antenna, then this can lead to the fact that it is there that there will be the weakest point on the armor. Any shape difference will critically affect the given armor thicknesses. More degrees, less degrees on the given armor - this immediately adds a plus centimeter to penetration. Therefore, you need to do everything right.

- And in which tank models is photogrammetry used the most?
- The most voluminous in terms of photogrammetry is the IS-3, which I have already mentioned. This was the first sign of this process, and on it we gave our 100 percent. It was almost 6 years ago. By the way, Maus was also photographed in Kubinka. It would seem, well, Maus, a primitive coffin without details, it seems to be strong and you will not be mistaken in the dimensions, angles, slopes of the slabs. But, if you examine him carefully in Kubinka, then, for example, he has a rather complex mask, which has interesting cuts, polishing, a very specific shape, not at all primitive. Maus, we were able to work out in more detail and accurately both with historical point of view, and from the artistic. For example, his armor plate joints have a deepening, and we did not do this in the very first version, because the photographs did not convey this much, and even more so the drawings. But on the photographic scan we saw all these nuances, indentations, cuts, polishing perfectly.


In general, most of our tanks are made in the classical way according to the drawings - this is due to the fact that the number of cars that are in the metal, and in the exact configuration in which we need, is negligible. We have more than 600 tanks in the game, and even if you count the number of copies in the same museums, this is ten times less. If we talk about entirely photoscanned cars, there are several dozen of these cars in the game. Nevertheless, they allowed us to work better and more accurately with the drawings, to better understand how the tanks were made and how they were cast, how artistically Soviet tanks differ from American and French ones.

And, of course, auxiliary materials obtained by photogrammetry are also of great importance. It is not enough to model a tank according to the drawing, this is just the tip of the iceberg. Then you need to apply all the textures to it, depict how rolled armor looks like on a tank, cast armor, welding of various types, cuts of armor plates.




- What are the largest and smallest objects transferred to the game using photogrammetry?
- Here, by the way, it is interesting, because scanning a small and a large object are two completely different tasks, each with its own difficulties. The largest object is a huge mountain. We scanned rocks in France and we use them on a number of maps. We photograph large mountains with a drone, and here there are nuances that affect the quality: suitable weather, strong or weak wind, the nuances of the shooting itself, so that the drone is stable in the air and is not very blown away, then a better result. We also use drones for tanks, oddly enough. There is a whole combination: we photograph tanks with different cameras, each for its own task.

And the smallest object is generally an interesting story. We had a Halloween event last year where we were creating a fantastic alternate reality. According to the plot, a man-made disaster occurred in the city and caused paranormal phenomena. The city was flooded with black slurry - a substance that is very similar to oil, and huge black crystal-like stones stuck out everywhere. An interesting story is connected with their creation. The task was to do something unusual, surreal. We made some concepts, sketches of how it might look. I got the idea to create these stones using photogrammetry, and I noticed that they generally look like bitumen. When you cool it strongly and break it into small pieces, you get very interesting stones, very similar to obsidian, with characteristic chopped shapes. I bought a small bag of this bitumen in the store, cooled it, and split it into small pieces, literally 5 by 5 cm in size.


The difficulty was that photogrammetry has a number of limitations. For example, it is impossible to scan glossy objects because they glare and the algorithm has nothing to attach to. The object should be matte, with a texture, then the program will understand how its shape changes from the perspective. So: I chopped the bitumen, took a few fragments that I liked, covered them with colored powder to create some kind of matte texture on them, and then with the help of a macro lens I photographed it in the best possible quality.


The process turned out to be quite time-consuming, it took me almost 2000 photos for one stone, but in the end I got a very high-quality scan, which we used in the game as an alien crystal. By the way, it is worth noting that in the game all crystals are gigantic in size, unlike their originals, which are quite small in life.

- What do you think, will the photogrammetry technology develop further?
- It is already being used in games with might and main, special libraries and companies have appeared that are engaged in this process and build their business on this. There is a library called Quixel Megascans, which is now used by all game and VFX studios that make games or films with photorealistic graphics. And there is a huge library of scans there. The technology is used both in cinema and in architectural visualization - the scope of application is quite wide.


Now, for example, in games where there are human characters, they try to create people using photogrammetry. This is especially important if there is not some abstract character in the game, but a famous actor. To draw it by hand, you need a very high level of skill of the artist. Or you can scan it!

But photogrammetry will not be able to replace manual labor by 100 percent, because games are still hostage to their setting, and not always the chosen setting can be scanned from life. For example, games that take place in a fictional world or in the very distant past. Well, or games in a cartoon style. Photogrammetry primarily helps those who set the bar for realistic visual style. There is no way without her.
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  1. SaLaR
    SaLaR 10 May 2021 15: 08
    +2
    IS-3 is the most favorite tank .. Hello to tank leaders soldier
    1. Grandfather
      Grandfather 10 May 2021 17: 10
      0
      It is not enough to model a tank according to the drawing, this is just the tip of the iceberg. Then you need to apply all the textures to it, depict how rolled armor looks like on a tank, cast armor, welding of various types, cuts of armor plates.
      I'm sorry for the poor fellows to tears ... it's not a real shift at the machine ...
      1. your1970
        your1970 10 May 2021 21: 14
        0
        Quote: Dead Day
        It is not enough to model a tank according to the drawing, this is just the tip of the iceberg. Then you need to apply all the textures to it, depict how rolled armor looks like on a tank, cast armor, welding of various types, cuts of armor plates.
        I'm sorry for the poor fellows to tears ... it's not a real shift at the machine ...

        Living history ...
        In the 60s, my father worked as a machine operator on a space box. A disciple. Gave them with a mentor to sharpen a part with a groove. The accuracy should be maximum. They exhausted themselves with it (some material was not suitable for this accuracy), did it for 5 days - but they did it, passed it and even received a small bonus. A month passes - they walk past the factory dump, and there their detail is lying around .. ...
        They put it in their hands and swear to the authorities, they say, how can it be ...
        The bosses of the commercials - "They say it's none of your business. We received an award and rejoice .." ..
        Then some of the engineers told them that this part was ground-based, the accuracy was basically not needed there - the cable walked along the groove (the father could even make it as a student), moreover, it was not needed at all ... I laid a margin for design in all parameters, just in case, so as not to be responsible - if that ...

        I just can't understand - did they spend a week at the machine for business or just like that?
        For a landfill?
        1. Narak-zempo
          Narak-zempo 12 May 2021 11: 00
          0
          Quote: your1970
          I just can't understand - did they spend a week at the machine for business or just like that?
          For a landfill?

          These are all little things.
          The main thing is to overcome the alienation of the employee from the results of his work. laughinglaughinglaughing
          And where these results will go, for business or in a landfill, not his employee's business.
          Such are the mutually exclusive paragraphs.
        2. max702
          max702 14 May 2021 10: 58
          0
          "So that there is no star - do everything according to the drawing!"
    2. Keyser soze
      Keyser soze 10 May 2021 21: 12
      0
      The IS-3 is my favorite tank ..


      1390 while I was at level 8. I loaded full gold, diamond consumables, a crew of 6 perks, every centimeter of a map in my head ..... and flashed and shot purple WN 8. The record on Malinovka was about 12800 lights. Somewhere...

      And now this game sucks. I haven't played for the third year. In fact, the fireflies were destroyed as a class, especially when the wheeled muck appeared.

      I would like to write something to the developers, but they will ban me for a hundred years, so I will not say anything.
      1. SaLaR
        SaLaR 10 May 2021 21: 23
        +1
        T-50-2 it was the best firefly ... good And the game was really fucked up ... Loot drives No. No.
  2. Jager
    Jager 10 May 2021 15: 25
    +17
    I removed this slag from the PC forever.
    1. Gado
      Gado 10 May 2021 20: 47
      +6
      Me too, I don't see anything to do with the truth there. No matter how they do photogrammetry.
      1. Rusticolus
        Rusticolus 11 May 2021 02: 04
        +1
        Yes, this photogrammetry is just a newfangled anonism. No one there finally nafig need it. The parasites did better than anything useful.
        1. Alf
          Alf 11 May 2021 19: 13
          +1
          Quote: Rusticolus
          The parasites did better than anything useful.

          Really go to the machine?
          1. Rusticolus
            Rusticolus 11 May 2021 19: 21
            +5
            Really go to the machine?
            Ktozh will let these mumblers go to the machine в Let them "scan" the streets with a broom.
            1. Alf
              Alf 11 May 2021 19: 23
              0
              Quote: Rusticolus
              Who will let these mumblers go to the machine?

              You are right, they will be able to break 1K62 too.
              Quote: Rusticolus
              Let the streets be "scanned" with a broom.

              I would not trust ...
  3. knn54
    knn54 10 May 2021 15: 28
    +3
    -The experience of scanning the IS-3 on the Stalin Line showed us that tanks manufactured at different factories can have noticeable differences.
    As a neighbor (a tanker-participant of the Second World War), then the military representative at the Malyshev plant said that on the T-34 made in Kharkov and Leningrad, some parts were not interchangeable.
    1. mark1
      mark1 10 May 2021 16: 40
      +1
      Quote: knn54
      on T-34 made in Kharkov and Leningrad

      Leningrad ... - have I missed something?
      1. Grandfather
        Grandfather 10 May 2021 17: 15
        0
        Quote: mark1
        Quote: knn54
        on T-34 made in Kharkov and Leningrad

        Leningrad ... - have I missed something?

        not you alone .. with KV apparently beguiled by a comrade
        1. Alex_You
          Alex_You 10 May 2021 21: 52
          0
          Apparently I confused it with Omsk, because the Leningrad 174th plant was evacuated there.
          1. Alexey RA
            Alexey RA 11 May 2021 11: 34
            0
            Quote: Alex_You
            Apparently I confused it with Omsk, because the Leningrad 174th plant was evacuated there.

            There, rather, STZ and Krasnoe Sormovo were noted. Because the question of the lack of unification of T-34 parts was raised by the IVS at the beginning of 1942 - when it learned that the towers of T-34 tanks produced by different factories were not interchangeable.
  4. svp67
    svp67 10 May 2021 16: 54
    +1
    The experience of scanning the IS-3 on the Stalin Line showed us that tanks manufactured at different factories can have noticeable differences both in the angles of inclination of the frontal armor and in the shapes of cast turrets.
    And at what different factories was this tank produced? As far as I know, it was produced at ChKZ in 1945-46
  5. nnm
    nnm 10 May 2021 16: 58
    +5
    Interestingly, if you cite an interview with Mikhnevich, one of the founders of the company, Forbs, regarding the peculiarities of withdrawing assets to Cyprus, obtaining "golden passports", etc., will they be banned or not?
    Formally, of course, the usual tax optimization, but when already in our country, or in the Republic of Belarus, a company appears that will remember how it began ...
    But for some reason they boast that they have rebuilt a whole block in Nicosia, and not in Minsk ...
    1. Grandfather
      Grandfather 10 May 2021 17: 17
      0
      Quote: nnm
      I wonder if

      .. "eh, Wan ..." k / f (Brother)
  6. dgonni
    dgonni 10 May 2021 18: 57
    0
    Oha! Now it is clear why grandfather 3 tanks by itself and the mouse is pierced by everything starting from the 8th level
  7. Undecim
    Undecim 10 May 2021 19: 52
    +7
    The experience of scanning the IS-3 on the Stalin Line showed us that tanks manufactured at different factories can have noticeable differences both in the angles of inclination of the frontal armor and in the shapes of cast turrets.

    The experience should be considered unsuccessful, since the IS-3 was produced by only one plant - the Kirov plant of the People's Commissariat of the Tank Industry in the city of Chelyabinsk.
  8. Mother Theresa
    Mother Theresa 10 May 2021 20: 16
    +2
    I will not waste time and money on your nonsense, at least try your best.
  9. The comment was deleted.
  10. Zum
    Zum 11 May 2021 00: 47
    +3
    Oh potatoes arrived ... don't play their game, they are damned capitalists ... they keep their players for fools and pump money out of them ... roll real tanks ... or RC, on a scale from 1/16 to 1/4 !!!
    1. Devyatomayets
      Devyatomayets 11 May 2021 09: 40
      -2
      Quote: Zum
      Oh, the potatoes arrived ... don't play their game, they are damned capitalists ... they keep their players for fools and pump money out of them ...


      Show us the games made by communists who haval the intellect of their players and put money in their pockets.
  11. The comment was deleted.
  12. Pavel57
    Pavel57 11 May 2021 15: 38
    +1
    Is each shot calculated taking into account the real ballistics of the projectile and hitting a specific point?
    1. Alf
      Alf 11 May 2021 19: 19
      +1
      Quote: Pavel57
      Is each shot calculated taking into account the real ballistics of the projectile and hitting a specific point?

      Yes Yes exactly. It is enough to watch a video from HERE, where tanks rush across rough terrain at the speed of a car, beat each other from 30-50 meters and do not pierce. My first Panzer Front on Sonya was even more realistic.
    2. The comment was deleted.
  13. mmaxx
    mmaxx 15 May 2021 17: 05
    0
    You just have to buy expensive industrial photogrammetric and scanning systems with the appropriate software. ... They will scan the gloss. The main thing is that managers should not be pressed for money.
    Since I dealt only with such, then scanning a tank is not a question. Now the technique that is designed to scan surfaces has finally begun to fulfill its tasks.
    And the problems that are described are similar to the technique of 10 years ago, or modern cheap and inaccurate all kinds of designer, etc. pieces.