Answer the given question with a proper explanation and step-by-step solution. Each image-processing function that modifies its image argument has the same loop pattern for traversing the image. The only thing that varies is the code used to change each pixel within the loop. Design a single function, named transform, which expects an image and a function as arguments. When this function is called, it should be passed by another function that expects a tuple of integers and returns a tuple of integers. This is the function that transforms the information for an individual pixel (such as converting it to black and white or gray-scale) The transform function contains the loop logic for traversing its image argument. In the body of the loop, the transform function accesses the pixel at the current position, passes it as an argument to the other function, and resets the pixel in the image to the function’s value. Write and test a script that defines this function and uses it to perform at least two different types of transformation on an image. Lab ________________________ CODE """ File: transform.py Project 7.12 Defines a transform function that represents a general pattern for traversing an image and modifying its pixels. Tests this function by using it to define grayscale and black and white functions.

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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Answer the given question with a proper explanation and step-by-step solution.

Each image-processing function that modifies its image argument has the same loop pattern for traversing the image. The only thing that varies is the code used to change each pixel within the loop. Design a single function, named transform, which expects an image and a function as arguments. When this function is called, it should be passed by another function that expects a tuple of integers and returns a tuple of integers. This is the function that transforms the information for an individual pixel (such as converting it to black and white or gray-scale) The transform function contains the loop logic for traversing its image argument. In the body of the loop, the transform function accesses the pixel at the current position, passes it as an argument to the other function, and resets the pixel in the image to the function’s value. Write and test a script that defines this function and uses it to perform at least two different types of transformation on an image. Lab ________________________ CODE """ File: transform.py Project 7.12 Defines a transform function that represents a general pattern for traversing an image and modifying its pixels. Tests this function by using it to define grayscale and black and white functions.

def transform (image, function):
"""Traverses the image and resets each pixel with the result
of applying the function to it."""
pass
def grayscale (image):
"""Converts an image to grayscale using the
psychologically accurate transformations."
***
def change (triple):
"""Converts a pixel to grayscale.
(r, g, b) = triple
r = int(r * 0.299)
g = int(g * 0.587)
b = int(b* 0.114)
lum = r + g + b
return (lum, lum, lum)
transform (image, change)
def blackandwhite (image):
"""Converts an image to black and white."""
def change (triple):
"""Converts a pixel to black and white."""
(r, g, b) = triple
average = (r + g + b) // 3
if average < 128:
-
return (0, 0, 0)
else:
transform (image, change)
if name
try:
return (255, 255, 255)
def main ():
filename = input ("Enter the image file name: ")
image Image (filename)
grayscale (image)
age.draw()
main
while True:
main ()
except KeyboardInterrupt:
print("\nProgram closed.")

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