Page 33 - C:\Users\msi\OneDrive\Documents\Flip PDF Corporate Edition\E-Commerce\
P. 33
Image Animation Techniques
Animation: Animation is an illusion of movement created by sequentially
playing still image frames at the rate of 15-20 frames per second.
Toggling between image frames: We can create simple animation by changing
images at display time. The simplest way is to toggle between two different
images. This approach is good to indicate a "Yes"
or "No" type situation.
Rotating through several image frames: The animation contains several frames
displayed in a loop. Since the animation consists of individual frames, the
playback can be paused and resumed at any time.
Full Motion Video
Most modem cameras use a CCD for capturing the image. HDTV video cameras
will be all-digital, and the capture method will be significantly different based on
the new NTSC HDTV Standard.
Full-Motion Video Controller Requirements
Video Capture Board Architecture: A full-motion video capture board is a
circuit card in the computer that consists of the following components:
o Video input to accept video input signals
o S- Video input to accept RS 170 input
o Video compression-decompression processor to handle different video
compression-decompression algorithms for video data
o Audio compression-decompression processor to compress and
decompress audio data
o Analog to digital converter
o Digital to analog converter
o Audio input for stereo audio LINE IN, CD IN.
o Microphone
A video capture board can handle a variety of different audio and video input
signals and convert them from analog to digital or digital to analog.
Video Channel Multiplexer: It is similar to the video grabber's video channel
multiplexer.
