Motion blur is the apparent streaking of rapidly moving objects in a still image or a sequence of images such as a movie or animation. Photography (fә'tɒgrәfi or fә'tɑːgrәfi (from Greek φωτο and γραφία is the process and Art of recording pictures by means of capturing The bouncing ball animation (below consists of these 6 frames
Contents |
When a camera creates an image, that image does not represent a single instant of time. A camera is a device used to capture images either as still Photographs or as sequences of moving images ( Movies or Videos. Because of technological constraints or artistic requirements, the image represents the scene over a period of time. As objects in a scene move, an image of that scene must represent an integration of all positions of those objects, as well as the camera's viewpoint, over the period of exposure determined by the shutter speed. The European Space Agency 's INTErnational Gamma-Ray Astrophysics Laboratory ( INTEGRAL) is detecting some of the most energetic radiation that comes from space In Photography, exposure is the total amount of Light allowed to fall on the photographic medium ( Photographic film or Image sensor) during the In Photography, shutter speed is the length of time a shutter is In such an image, any object moving with respect to the camera will look blurred or smeared along the direction of relative motion. This smearing may occur on an object that is moving or on a static background if the camera is moving. In a film or television image, this looks natural because the human eye behaves in much the same way. Television ( TV) is a widely used Telecommunication medium for sending ( Broadcasting) and receiving moving Images, either monochromatic
Because the effect is caused by the relative motion between the camera, and the objects and scene, motion blur may be avoided by panning the camera to track those moving objects. Panning refers to the horizontal movement or rotation of a film or video camera or the scanning of a subject horizontally on video or a display device In this case, even with long exposure times, the objects will appear sharper, and the background more blurred.
Similarly, in real-time computer animation each frame shows a perfect instance in time (analogous to a camera with an infinitely fast shutter), with zero motion blur. This is why a video game with a frame rate of 25-30 frames per second will seem staggered, while natural motion filmed at the same frame rate appears continuous. Frame rate, or frame frequency, is the measurement of the Frequency (rate at which an imaging device produces unique consecutive images called frames The Many next generation video games feature motion blur, especially vehicle simulation games. Vehicle simulation games are a genre of Video games which attempt to provide the player with a realistic interpretation of operating various kinds of vehicles In pre-rendered computer animation, such as CGI movies, realistic motion blur can be drawn because the renderer has more time to draw each frame. Computer animation Computer-generated imagery (also known as CGI) is the application of the field of Computer graphics or more specifically 3D computer graphics Temporal anti-aliasing produces frames as a composite of many instants. Temporal anti-aliasing seeks to reduce or remove the effects of Temporal aliasing, which results from insufficient temporal sampling
In televised sports, where conventional cameras expose pictures 25 or 30 times per second, motion blur can be inconvenient because it obscures the exact position of a projectile or athlete in slow motion. Sport is an Activity that is governed by a set of rules or Customs and often engaged in competitively Slow motion is a technique in film-making whereby Time appears to be slowed down For this reason special cameras are often used which eliminate motion blurring by taking rapid exposures on the order of 1/1000 of a second, and then transmitting them over the course of the next 1/25 or 1/30 of a second. Although this gives sharper slow motion replays it can look strange at normal speed because the eye expects to see motion blurring and does not.
Sometimes, motion blur can be removed from images with the help of deconvolution. In Mathematics, deconvolution is an algorithm-based process used to reverse the effects of Convolution on recorded data
|
These city lights were still; it was the camera's orientation that changed during the exposure. The dashed pattern the individual lights trace is due to alternating current. An alternating current ( AC) is an Electric current whose direction reverses cyclically as opposed to Direct current, whose direction remains constant |
Both the truck and the camera moved during this exposure. The camera was moved, or panned, in order to remain pointed at the truck's driver-side door. That is why the ground appears to move past the truck. |
The traffic on this street leaves brilliant streaks due to the low shutter speed of the camera and the cars' relatively fast speed. |
Taken aboard an airplane rotating above San Jose at night. The city lights form concentric strips. |