Use the following formula for a 2D Gaussian to calculate a 3-by-3 pixel numerical approximation to a Gaussian with standard deviation of 0.56 pixels.
Use the following formula for a 2D Gaussian to calculate a 3-by-3 pixel numerical approximation to a Gaussian with standard deviation of 0.56 pixels.
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
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
Transcribed Image Text:Question 3
Use the following formula for a 2D Gaussian to
calculate a 3-by-3 pixel numerical approximation to
a Gaussian with standard deviation of 0.56 pixels.
(x²+y²)
G(x, y) = exp(-
20?
Hence, determine the values in a 3-by-3 pixel
Laplacian of Gaussian mask, using the following
definition of a Laplacian mask:
-0.125 -0.125 -0.125
--0.125
1.000
-0.125
-0.125 -0.125 -0.125
ANSWER:
Numerical approximation to the Laplacian of
Gaussian mask:
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