Old-fashioned photographs from the nineteenth century are not quite black and white and not quite color, but seem to have shades of gray, brown, and blue. This effect is known as sepia, as shown in the figures below. Write and test a function named sepia that converts a color image to sepia. This function should first call grayscale to convert the color image to grayscale. A code segment for transforming the grayscale values to achieve a sepia effect follows.Note that the value for green does not change.(red, green, blue) = image.getPixel(x, y)if red < 63: red = int(red * 1.1) blue = int(blue * 0.9)elif red < 192: red = int(red * 1.15) blue = int(blue * 0.85)else: red = min(int(red * 1.08), 255) blue = int(blue * 0.93) gramming Exercise 7.8|Instructionsimages.pysepia.pysmokey.gifQ Desktop+3 Project 7.84Old-fashioned photographs from the nineteenth century are5 Defines and tests a function for converting images to sepia.not quite black and white and not quite color, but seem to haveshades of gray, brown, and blue. This effect is known as sepia,7as shown in the figures below.8 from images import Image9.10 def sepia(image):OriginalSepia11"I"Converts an image to sepia."""12pass1314 def grayscale(image):15""Converts an image to grayscale."""for y in range(image.getHeight()):for x in range(image.getWidth()):(r, g, b) = image.getPixel(x, y)r = int(r * 0.299)g = int(g * 0.587)1617181920Original Image & Sepia Image>- TerminalWrite and test a function named sepia that converts a colorimage to sepia. This function should first call grayscale tosandbox $|convert the color image to grayscale.A code segment fortransforming the grayscale values to achieve a sepia effectfollows.Note that the value for green does not change.(red, green, blue) = image.getPixel(x, y)

Answer: I have written a python code and as well as code screenshot.

Answered: Old-fashioned photographs from the…

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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Old-fashioned photographs from the nineteenth century are not quite black and white and not quite color, but seem to have shades of gray, brown, and blue. This effect is known as sepia, as shown in the figures below.

Write and test a function named sepia that converts a color image to sepia. This function should first call grayscale to convert the color image to grayscale. A code segment for transforming the grayscale values to achieve a sepia effect follows.
Note that the value for green does not change.

(red, green, blue) = image.getPixel(x, y)
if red < 63:
    red = int(red * 1.1)
    blue = int(blue * 0.9)
elif red < 192:
    red = int(red * 1.15)
    blue = int(blue * 0.85)
else:
    red = min(int(red * 1.08), 255)
    blue = int(blue * 0.93)

gramming Exercise 7.8
|Instructions
images.py
sepia.py
smokey.gif
Q Desktop
+
3 Project 7.8
4
Old-fashioned photographs from the nineteenth century are
5 Defines and tests a function for converting images to sepia.
not quite black and white and not quite color, but seem to have
shades of gray, brown, and blue. This effect is known as sepia,
7
as shown in the figures below.
8 from images import Image
9.
10 def sepia(image):
Original
Sepia
11
"I"Converts an image to sepia."""
12
pass
13
14 def grayscale(image):
15
""Converts an image to grayscale."""
for y in range(image.getHeight()):
for x in range(image.getWidth()):
(r, g, b) = image.getPixel(x, y)
r = int(r * 0.299)
g = int(g * 0.587)
16
17
18
19
20
Original Image & Sepia Image
>- Terminal
Write and test a function named sepia that converts a color
image to sepia. This function should first call grayscale to
sandbox $|
convert the color image to grayscale.A code segment for
transforming the grayscale values to achieve a sepia effect
follows.
Note that the value for green does not change.
(red, green, blue) = image.getPixel(x, y)

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