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Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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please send correct answer of Q 8
Question 7
The reason that a discrete cosine transform (DCT) is applied to image data as part of the JPEG image format is:
O It enables identification of high frequency edges
O It increases the number of colours that can be stored
O It compresses the data using lossless compression
O It quantises colour information
Question 8
PNG image encoding supports which of the following?
O Lossy compression of image data
O Animation of multiple images in a single PNG file
O An alpha value for variable opacity
O Storing of vector objects with the image definition
Question 9
The GIF palette can store a maximum number of 256 colours using an 8-bit index value. What is the maximum number of possible colours if a 5-bit index is used for the palette?
O 128
O 8
O 16
O 32
Transcribed Image Text:Question 7 The reason that a discrete cosine transform (DCT) is applied to image data as part of the JPEG image format is: O It enables identification of high frequency edges O It increases the number of colours that can be stored O It compresses the data using lossless compression O It quantises colour information Question 8 PNG image encoding supports which of the following? O Lossy compression of image data O Animation of multiple images in a single PNG file O An alpha value for variable opacity O Storing of vector objects with the image definition Question 9 The GIF palette can store a maximum number of 256 colours using an 8-bit index value. What is the maximum number of possible colours if a 5-bit index is used for the palette? O 128 O 8 O 16 O 32
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