Motion Perception and Visual Effects Quiz

The ability of the human eye to perceive still images as continuous motion when presented in rapid succession.

The perception of movement when two lights are illuminated close together in quick succession, making it appear as a single light moving between them.

The minimum rate at which stimuli can be presented and still be perceived as separate events.

The frequency at which frames must be displayed to create the illusion of smooth motion, ensuring that the persistence of vision bridges the gaps between images.

The rate at which images are displayed on a screen, measured in Hertz (Hz).

A traditional display technology that uses an electron beam to illuminate phosphors on the screen, creating images.

The brightness of a light source, which impacts the Critical Fusion Frequency.

The display technology's ability to refresh images quickly, reducing motion blur and creating smooth visual transitions.

A rectangular array of points or dots forming the image on a display, often used with CRTs (Cathode Ray Tubes).

A single dot or picture element (pixel) in a raster display. The smallest unit of an image.

A horizontal line of pixels in a raster display that is scanned to create the image. The CRT beam scans the screen line by line.

Light emitted from the phosphor material in a CRT while being excited by electron beams.

Light emitted after the electron beam stops exciting the phosphor, glowing for a brief duration after.

The time required for phosphorescence to decay to 10% of its initial brightness after the electron beam is removed. Determines how long the image persists on the screen.

The process of redrawing or refreshing the image on a display screen to maintain a stable image and avoid flickering. This is done by scanning the electron beam across the screen repeatedly.

The frequency at which the electron beam scans the screen to refresh the image, which is usually 60 times per second. This is high enough to prevent flicker.

A technique for creating still frames by doubling the lines of a chosen field in a video signal.

A playback method where both fields of a video signal are displayed simultaneously, resulting in a uniform, fading image.

The national television standard used in North and South America, Japan, and other regions. A standard that uses a picture consisting of 525 lines with a frame rate of 30Hz.

A television standard used in France and Eastern Europe. It uses a picture with 625 lines and a frame rate of 25Hz.

A television standard used in Western Europe, most of Asia, and other countries. It uses a picture with 625 lines and a frame rate of 25Hz.

The smallest unit of detail in a digital image, represented by a single dot.

The ratio of the image's width to its height. It's 4:3 for conventional TV.

A characteristic of conventional video systems where resolution is relatively lower compared to computer screens. This is due to video signals using fewer lines and pixels to create the image.

A type of display technology that uses three electron guns and a metal shadow mask to create a color image. Each electron gun directs a beam of electrons towards the screen, and the shadow mask ensures that each beam hits only the corresponding phosphor dots.

The minimum frame rate needed for the human eye to perceive continuous motion. For anything below this rate, viewers see individual frames instead of smooth motion.

A display technology that updates the whole image at once, showing all the lines of the frame simultaneously. This avoids the common tearing and flickering that occurs in interlaced systems.

A technique used in video systems to display a smooth image even at a lower frame rate. It involves dividing a frame into two fields and displaying them in a rapid succession.

The phenomenon of visible flickering that appears on CRT monitors when the refresh rate is too low. This happens because the phosphors on the screen lose their brightness in the time between each sweep of the electron beam.

A video technology that captures and displays video by interleaving two fields, each containing half of the lines from a complete frame. This results in a lower resolution but utilizes higher bandwidth.

The visual artifact that occurs when interlaced fields are combined to show a still frame. The resulting image might show distorted lines where the two fields don't match properly.

The process of capturing multiple frames and combining them to create a smooth motion illusion. Each frame contains a slightly different image, which, when played in sequence, gives the appearance of movement.

The process of converting analog video signals into digital data, which involves sampling the video signal at regular intervals.

The number of frames displayed per second, determining the smoothness of motion in video.

The time it takes to display one frame of video, calculated as 1 divided by the frame rate (fps).

The time it takes to scan a single line of video, calculated by dividing the frame duration by the number of scan lines.

The number of pixels that make up a single scan line, determining the horizontal resolution of the video.

The number of times per second a video signal is sampled, measured in Hz, and determining the image quality and bandwidth requirements.

The number of bits used to represent the color of each pixel, affecting the depth and richness of the video image.

A file format designed by Microsoft for storing and playing audio and video data, commonly used for multimedia presentations.

A file format developed by Apple for storing and playing audio and video data, originally for Macintosh systems.

A type of video compression standard commonly used for video recording, streaming, and distribution. It offers a balance between compression efficiency and quality.

A successor to MPEG-1, offering higher compression efficiency and quality. It supports features like interleaving audio and video.

The process of creating a series of still images that depict movement when displayed in rapid succession. Can be done using traditional animation techniques or computers.

Frames that are strategically used to define critical points in animation. These frames help define the start and end positions of moving objects in the animation.

The process of generating intermediate frames between key frames in an animation. This creates a smooth and continuous movement by filling in the gaps between the key poses.

A method of generating intermediate positions between key frames. It uses mathematical calculations to create smooth movements.

A simple type of interpolation that creates a smooth, linear change between two points. It may not look realistic.

A more advanced interpolation technique that creates a smoother and more natural movement by using curves.