Urgent ... Who knows what a high-tech interactive photography control system is? What is its composition? Structure? Use? The most important thing is how to do it.

High-tech interactive photography control system, English full name is motion control system, referred to as MoCo. John Dykstra, the special effects director of Star Wars, defines MoCo: Moco system is an interactive photography control system, which can synchronously control the motion lines of cameras, subjects and lights and the shooting speed.

A brief history of motion control

MoCo has been used for shooting in Europe and America for quite a long time. As early as the beginning of this century, Americans began to play something very close to MoCo. At that time, people tried to repeat their actions with wires, transmissions and pulleys until the late 1960s and early 1970s.

Among MoCo's early films, 200 1 A Space Walk (200 1) and Silent Running were the first films. Although the early films were not smooth, they were quite good. If we look at the whole history of MoCo, we will find that the machines of the past are actually very close to the machines of the present. At that time, people knew long ago what they needed to get the lens they wanted, but it was impossible because of scientific and technological factors!

When John Dykstra was hired to shoot Star Wars, the memory of 1K had just been released, and at that time, people had begun to try to build a real motion control. In fact, before this, people have already started experiments in this field. According to Al Miller, the pioneer of MoCo and the founder of a motion control rental service leasing company, when they were at Berkeley University, they tried to use a PDP microcomputer to operate their MoCo, but in the early days, the transmission used was quite cumbersome. After 30 years of improvement, today's technology allows everything that used to be done with a 6-foot shelf to be placed on the integrated circuit board of a personal computer. Now, MoCo has become a part of the integration of European and American film shooting tools.

Motion control function

Simply put, MoCo is a set of equipment that combines hardware equipment, computer and camera. With the help of computer-controlled camera movement technology, the camera can generate a dynamic moving lens viewpoint, and accurately and continuously copy this moving viewpoint to realize a unique and complete special effect lens.

MoCo system has the function of target tracking, which perfectly combines digital images with real scenes. The operator can accurately know the spatial coordinates of the camera lens, and know whether the visual angle of the object is consistent with the digital picture to be synthesized in the previous shooting, and can be directly integrated with the three-dimensional software.

The spindle of MoCo system has various functions, such as tracking photography, rotation, lifting, arm extension, lens angle, left and right rotation, tilt, rotation, snapshot, zoom, focus, fade in and out, etc. These functions can be used in unlimited combination, and it is the best system in pre-shooting.

MoCo system is an excellent omni-directional image automatic control and recording system, which has many excellent motion input functions, so that the pictures taken in the early stage can be immediately merged with the computer pictures, and the synthetic effect can be known when shooting, achieving the best effect and greatly saving the post-production time.

MoCo system has preview function, so it is easy to plan before shooting. Thanks to the latest preview function, you can design the camera motion and picture sequence before shooting.

It can accurately repeat the shooting path and capture any delicate movements on the spot. No matter how fast and complicated the camera moves, the camera can completely copy the position of the previous path and capture the accurate position of the camera in three-dimensional space. You can also make the shooting completely automated. As long as the MoCo is set, the director can devote himself to the shooting, focusing on the subject and creativity, not the lens.

Motion control system plays a very important role in digital production. Film shooting is fully automatic, with a large amount of preview information, and it can be easily planned before shooting. Accurate repeated shooting greatly improves the quality and time of computer digital production, allowing more time for visual special effects creation.