What Is Optical Flow?
The optical flow method is an important method for moving image analysis. Its concept was first proposed by James J. Gibson in the 1940s, and refers to the speed of mode motion in time-varying images. Because when the object is moving, the brightness mode of its corresponding point on the image is also moving.
light flow
(An important method for moving image analysis)
Right!
- Chinese name
- light flow
- Foreign name
- Optical flow
- Definition
- Apparent motion in image brightness mode
- Features
- Determine target movement
- The optical flow method is an important method for moving image analysis. Its concept was first proposed by James J. Gibson in the 1940s, and refers to the speed of mode motion in time-varying images. Because when the object is moving, the brightness mode of its corresponding point on the image is also moving.
- The apparent motion of this image brightness mode is optical flow . Optical flow expresses the change of the image. Because it contains information about the movement of the target, it can be used by the observer to determine the movement of the target. The definition of optical flow can be derived from the optical flow field, which refers to a two-dimensional (2D) instantaneous velocity field composed of all pixels in an image. The two-dimensional velocity vector is a three-dimensional velocity vector of visible points in the scene on the imaging surface. Projection. So optical flow contains not only the motion information of the observed object, but also rich information about the three-dimensional structure of the scene. The study of optical flow has become an important part of computer vision and related research fields. Because in computer vision, optical flow plays an important role, and it has very important applications in target object segmentation, recognition, tracking, robot navigation, and shape information recovery. Restoring the three-dimensional structure and motion of objects from optical flow is one of the most meaningful and challenging tasks facing computer vision institutes. Because of this important status and role of optical flow, many psychophysicists, physiologists and engineering researchers have joined its research ranks. For more than a decade, they have proposed many methods to calculate optical flow, and new methods are constantly emerging.