Vector Motion Blur

矢量运动模糊

Vector Motion Blur

矢量运动模糊

Next to Sub-Frame Motion Blur and vector motion blur (VMB) gives you an additional means of blurring moving objects.

旁边的子框架运动模糊和向量运动模糊(VMB)给你一个额外的手段，模糊移动对象。

VMB takes a very different approach: based on the physics of a traditional analog film camera, VMB is based both on the object’s speed as well as the shutter angle of the camera itself. Traditional film cameras have a rotating shutter, where the shutter’s angle determines how much blur can be captured onto film. An angle of 360°, for example, means the shutter rotates a full turn over the course of a single frame, exposing the film for a portion of that time and therefore creating full motion blur between two sequential frames.

VMB 采用了一种非常不同的方法: 基于传统模拟胶片相机的物理原理，VMB 是基于物体的速度以及相机本身的快门角度。传统的胶片相机有一个旋转快门，快门的角度决定了胶片能捕捉到多少模糊。例如，一个360 ° 的角度，意味着快门在一个画面中旋转一个完整的周期，曝光一部分时间，因此在两个连续的画面之间产生完整的运动模糊。

Cinema 4D takes it a step beyond realism by allowing you to use much larger angles than a normal camera.

C4D超越了现实主义，允许你使用比普通摄像机更大的角度。

Naturally, the blur will therefore be even greater. When rendering VMB, the path of an object between its start and end point is taken into account. Several samples are calculated and distributed along the path. This makes it possible to blur rotating motion as well.

当然，模糊的效果会更加明显。在呈现 VMB 时，将考虑对象在其起始点和终止点之间的路径。计算了多个样本并沿路径分布。这使得模糊旋转运动也成为可能。

The major advantage over Sub-Frame Motion Blur is the fact that no intermediate frames need to be rendered, greatly reducing render times. Furthermore, you can use it with any type of deformer object.

相对于子帧动态模糊的主要优点是不需要渲染中间帧，大大减少了渲染时间。此外，您可以使用它与任何类型的变形对象。