USING PYTHON: Create a function that takes a filename("string") of a PGM image file as input and loads in the image in the file, and returns it as an image matrix
USING PYTHON: Create a function that takes a filename("string") of a PGM image file as input and loads in the image in the file, and returns it as an image matrix
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
USING PYTHON: Create a function that takes a filename("string") of a PGM image file as input and loads in the image in the file, and returns it as an image matrix.
Rules: Cannot make any input calls in the main body, use basic python (nothing like .shape or .width)
I have attached an example of what the function should do, as well as what the PGM image file looks like.
Transcribed Image Text:P2
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255
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0
0
0 51 51 51 51
0 51 О О
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0 51
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0 51 О
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0 51 51 51 51
О
0 0
0000
О О
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О 0 0 0 0 0
119 119 119 119 119 0
О О О 0 0 О 0 О 0
187 187
0 187 187 187 187 187 0
187 187 0 255 255 255 255
0 0
119
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0 119 0
187
0 0 119
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0 119 0 187
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0 187
0 187
0 187
0 187
0 187 0 255 0 0 255
0 187 0 255 255 255 255
0 187 0 255
0 187 0 255
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0 0 119
51 0 119 119 119 119
0 119 0 187
119 0 187
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0 0
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![• load_regular_image: takes a filename (string) of a PGM image file as input, and loads in the image
contained in the file and returns it as an image matrix. If, during or after loading, the resulting
image matrix is found to not be in PGM format, then a AssertionError with an appropriate error
message should be raised instead. (The file could have anything inside it, not necessarily a valid
image matrix.)
Note: For this and further examples, we put each sublist on its own line for readability purposes.
When you write your examples in the docstring, however, the output must be all on one line for
the doctest to work properly.
>>> load_regular_image("comp.pgm")
[[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 51, 51, 51, 51, 51, 0, 119, 119, 119, 119, 119, 0, 187, 187, 187, 187, 187, 0, 255,
9, 12⁹, 0,
255, 255, 255, 0],
[0, 51, 0, 0, 0, 0, 0, 119, 0, 0, 0,
[0, 51, 0, 0, 0, 0, 0, 119, 0, 0, 0,
0],
119, 0, 187, 0, 187, 0, 187, 0, 255, 0, 0, 255, 0],
119, 0, 187, 0, 187, 0, 187, 0, 255, 255, 255, 255,
[0, 51, 0, 0, 0, 0, 0, 119, 0, 0, 0, 119, 0, 187, 0, 187, 0, 187, 0, 255, 0, 0, 0, 0],
[0, 51, 51, 51, 51, 51, 0, 119, 119, 119, 119, 119, 0, 187, 0, 187, 0, 187, 0, 255, 0,
0, 0, 0],
[0, 0, 0, 0, 0, 0,
0, 0, 0,
0,
0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2e9adce6-7ce4-405a-96b4-36bd26f752aa%2Ffe2ce92a-d5ec-4ef9-ab7d-9b2b4b799220%2Fvm8tvhb_processed.png&w=3840&q=75)
Transcribed Image Text:• load_regular_image: takes a filename (string) of a PGM image file as input, and loads in the image
contained in the file and returns it as an image matrix. If, during or after loading, the resulting
image matrix is found to not be in PGM format, then a AssertionError with an appropriate error
message should be raised instead. (The file could have anything inside it, not necessarily a valid
image matrix.)
Note: For this and further examples, we put each sublist on its own line for readability purposes.
When you write your examples in the docstring, however, the output must be all on one line for
the doctest to work properly.
>>> load_regular_image("comp.pgm")
[[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 51, 51, 51, 51, 51, 0, 119, 119, 119, 119, 119, 0, 187, 187, 187, 187, 187, 0, 255,
9, 12⁹, 0,
255, 255, 255, 0],
[0, 51, 0, 0, 0, 0, 0, 119, 0, 0, 0,
[0, 51, 0, 0, 0, 0, 0, 119, 0, 0, 0,
0],
119, 0, 187, 0, 187, 0, 187, 0, 255, 0, 0, 255, 0],
119, 0, 187, 0, 187, 0, 187, 0, 255, 255, 255, 255,
[0, 51, 0, 0, 0, 0, 0, 119, 0, 0, 0, 119, 0, 187, 0, 187, 0, 187, 0, 255, 0, 0, 0, 0],
[0, 51, 51, 51, 51, 51, 0, 119, 119, 119, 119, 119, 0, 187, 0, 187, 0, 187, 0, 255, 0,
0, 0, 0],
[0, 0, 0, 0, 0, 0,
0, 0, 0,
0,
0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]
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