OpenCV Computer Vision with Python
Copyright © 2013 Packt Publishing
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First published: April 2013
Production Reference: 1160413
Published by Packt Publishing Ltd.
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Cover Image by Suresh Mogre (email@example.com)
David Millán Escrivá
About the Author
Joseph Howse (Joe) is fanciful. So to him, the virtual world always seemed
to reach out into reality. One of his earliest memories is of watching an animated
time-bomb on the screen of a Tandy Color Computer. The animation was programmed
in BASIC by Joe's older brother, Sam, who explained, "I'm making a bomb. Get ready!"
The bomb exploded in a rain of dots and a rumble of beeps as Joe and Sam ran to hide
from the fallout.
Today, Joe still fancies that a computer program can blast a tunnel into reality. As
a hobby, he likes looking at reality through the tunnel of a digital camera's lens. As
a career, he develops augmented reality software, which uses cameras and other
sensors to composite real and virtual scenes interactively in real time.
Joe holds a Master of Computer Science degree from Dalhousie University. He does
research on software architecture as applied to augmented reality.
Joe works at Ad-Dispatch, an augmented reality company, where he develops
applications for mobile devices, kiosks, and the Web.
Joe likes cats, kittens, oceans, and seas. Felines and saline water sustain him. He lives
with his multi-species family in Halifax, on Canada's Atlantic coast.
I am able to write and to enjoy writing because I am constantly
encouraged by the memory of Sam and by the companionship
of Mom, Dad, and the cats. They are my fundamentals.
I am indebted to my editors and reviewers for guiding this book to
completion. Their professionalism, courtesy, good judgment, and
passion for books are much appreciated.
error: could not find a version that satisfies the requirement python-opencv (from versions: none) error: no matching distribution found for python-opencv
cv2.error: opencv(4.5.4) d:\a\opencv-python\opencv-python\opencv\modules\objdetect\src\cascadedetect.cpp:1689: error: (-215:assertion failed) !empty() in function 'cv::cascadeclassifier::detectmultiscale'
error: opencv(4.6.0) d:\a\opencv-python\opencv-python\opencv\modules\highgui\src\window.cpp:967: error: (-215:assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'
这是什么意思Traceback (most recent call last): File "F:\python练习\opencv\test.py", line 13, in <module> cv2.imshow('Image', img) cv2.error: OpenCV(4.7.0) D:\a\opencv-python\opencv-python\opencv\modules\highgui\src\window.cpp:971: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow' >>>
cv2.error: opencv(4.5.4) d:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\resize.cpp:4051: error: (-215:assertion failed) !ssize.empty() in function 'cv::resize'
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