Question1 images can be stored as lossless or lossy bitmaps

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Question

1. Images can be stored as lossless or lossy bitmaps. Explain differences why are most photographic images stored in a lossy format?

2. Duy prints digital photographs to be hung in art galleries. Each photo contains 4,000 x 3000 pixels and uses RGB colour scheme with a bit depth of 24.

a. Duy wants to decrease storage space used to store his photographs, but wants to keep the similar dimensions for each photograph. Propose 2 things that Duy could do to reduce the storage space needed, and in brief explain how you will help.

b. One day someone comments to Duy that they find it strange that he must use an additive colour scheme such as RGB for printing photographs on paper. Describe difference between additive and subtractive colour models, and give an example of each.

3. Ngoc's Disco is a music recording business. One of Ngoc's clients records song of 3 minutes in length at sampling rate of 96,000 Hz and in stereo.

a. If Ngoc reduces the dynamic range of recording, and manages to reduce the file size by around 25 percent .Explain how this drop is possible without reducing the sound quality.

b. describe how the 6-minute monologue might be further reduced in size without reducing sound quality, and without changing file format such as without changing to say MP3 or Ogg Vorbus format.

Reference no: EM13349158

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