CS1033 Final Exam Review Questions With
Complete Answers
Quantizing - ANSWER how many discrete values (bits) will be used to represent each
pixel - represents the colour combinations
Sampling - ANSWER breaking the media up
graphic Attributes - ANSWER image quality: image resolution, image bit depth
Image Resolution - ANSWER ppi/dpi: the number and spacing of pixels in an image
increase in pixels = increase in quality of detail in the resolution
Web graphics - ANSWER 72 dpi
Laser Printers - ANSWER 300-600 dpi
high end imagesetters - ANSWER 1200 dpi, 2400 dpi
Image size - ANSWER The physical dimensions of an image
Decreasing size of an image.... - ANSWER increases its resolution
,Increasing the size of an image - ANSWER decreases its resolution
Image Bit depth (Colour Depth) - ANSWER maximum number of colours used to
represent an image
- the more bits used, the more colour info
- human eye can only see 10 million colours so we only use 24 bit colour (16 million)
Universally Supported files - ANSWER JPG, GIF
Proprietary files (native files) - ANSWER default files used by specific software
applications, can be bitmap or vector - PSD, DWG
- can save in both native and universal format
PSD - ANSWER Photoshop
♣ Software-specific image properties can only be retained when an image is saved in the
software's native format (layering in photoshop)
Aup - ANSWER Audacity
MVMM - ANSWER movie maker
,CDR - ANSWER Corel Draw- vector
DWG - ANSWER Auto cad - vector
GIF - ANSWER Graphics Interchange Format (bitmapped
- attributes file format
- compression
- colour resolution
- dithering
- interlacing
- transparency
- cross platform
- 8 bit colour - good for clip art
- tiny file size, limited colour
-lossless
JPG - ANSWER joint photographic experts group
- compression
- distorts edges where there is sharp contrast
- stores full colour information - 24 bits
- larger file size, full colour scheme
, - lossy
- compresses by forgetting
ARTIFACTS: (JPG) - ANSWER noise/specs around the image
Lossless - ANSWER compression
- no data discarded during compression
- quality kept
- not blurry
- LZW compression but compressing to reduce file seizes by finding repeated patterns of
pixels
Lossy - ANSWER Compression- data is discarded each time file is compressed - quality
degrades
- not the same as the original
achieved by Forgetting
♣ 0% compression = 100% quality, 95% compression = 5% quality
Tiff - ANSWER bitmap
- image editing
- 1 - 32 bits
- cross platform
Complete Answers
Quantizing - ANSWER how many discrete values (bits) will be used to represent each
pixel - represents the colour combinations
Sampling - ANSWER breaking the media up
graphic Attributes - ANSWER image quality: image resolution, image bit depth
Image Resolution - ANSWER ppi/dpi: the number and spacing of pixels in an image
increase in pixels = increase in quality of detail in the resolution
Web graphics - ANSWER 72 dpi
Laser Printers - ANSWER 300-600 dpi
high end imagesetters - ANSWER 1200 dpi, 2400 dpi
Image size - ANSWER The physical dimensions of an image
Decreasing size of an image.... - ANSWER increases its resolution
,Increasing the size of an image - ANSWER decreases its resolution
Image Bit depth (Colour Depth) - ANSWER maximum number of colours used to
represent an image
- the more bits used, the more colour info
- human eye can only see 10 million colours so we only use 24 bit colour (16 million)
Universally Supported files - ANSWER JPG, GIF
Proprietary files (native files) - ANSWER default files used by specific software
applications, can be bitmap or vector - PSD, DWG
- can save in both native and universal format
PSD - ANSWER Photoshop
♣ Software-specific image properties can only be retained when an image is saved in the
software's native format (layering in photoshop)
Aup - ANSWER Audacity
MVMM - ANSWER movie maker
,CDR - ANSWER Corel Draw- vector
DWG - ANSWER Auto cad - vector
GIF - ANSWER Graphics Interchange Format (bitmapped
- attributes file format
- compression
- colour resolution
- dithering
- interlacing
- transparency
- cross platform
- 8 bit colour - good for clip art
- tiny file size, limited colour
-lossless
JPG - ANSWER joint photographic experts group
- compression
- distorts edges where there is sharp contrast
- stores full colour information - 24 bits
- larger file size, full colour scheme
, - lossy
- compresses by forgetting
ARTIFACTS: (JPG) - ANSWER noise/specs around the image
Lossless - ANSWER compression
- no data discarded during compression
- quality kept
- not blurry
- LZW compression but compressing to reduce file seizes by finding repeated patterns of
pixels
Lossy - ANSWER Compression- data is discarded each time file is compressed - quality
degrades
- not the same as the original
achieved by Forgetting
♣ 0% compression = 100% quality, 95% compression = 5% quality
Tiff - ANSWER bitmap
- image editing
- 1 - 32 bits
- cross platform
