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iscrete cosine transform (DCT) is applied to imag ation of high frequency edges mber of colours that can be stored data using lossless compression

iscrete cosine transform (DCT) is applied to imag ation of high frequency edges mber of colours that can be stored data using lossless compression

Database System Concepts
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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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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