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20 Cards in this Set

  • Front
  • Back
Digitizing pixels
using ninary numbers to represent brightness intensity of pixel components
generated image from dots of colors
Color image
controls the intensity for the three colors RGB
Black and white images
pixel intensity on or off
true image
controlling pixl intensity i.e adjusting pixel brightness
Monochrome imaging
one color with one bit per pixel
Storage requirements for images depend on what three parameters
1. Size of image i.e pixels horizontal x vertical
2. display quality of pixel
Formula for computing image storage/memory requirements
1. [Vertical x horizontal (pixels)x bits per pixel]divided by 8 bits per byte = # of Bytes
Shortcut formula for storage requirements
# of pixels x Bytes per pixel =
# of Bytes required
Tagged Image File Format...extension uses 1 byte per color so three bytes in all per pixel
Joint Photographic Experts group with a compression ratio of 15-20
algorithm used to compress and decompress a file
Two type of line sequences that determine HDTV formats
1. Progressive (p)
2. Interlaced or scanned (i)
Progressive Scan
Sends all lines in sequence
Interlaced scan
Sends odd numbered in sequence and then sends even numbered lines
Two determining factors for HDTV format
1. Lines (more lines are better)
2. Progressive vs interlaced scans. (progressive is better)
Example of HDTV format
1080p (This is ultimate standard that requires 1920 x 1080 poxels
Factors effecting visual quality of HD
1. Contrast ratio (white to black and higher is better)
2. Brighness (candelas per square meter. higher is better)
3. Response time (shorter is better)
HD ready TV
TV can recieve and display regular (NTSC) broadcast but to display HD a HD source (HD tuner) is needed for HD signal
Integrated HDTV
Has an integrated HD tuner with the monitor and can also recieve regular TV broadcasts due to the NTSC tuner.