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Simple OpenCV 3.x image processing functions

Project description

OpenCV Utilities

Latest Version

License

This is a set of OpenCV utilities that should make working with OpenCV a little easier. I forked this and added somethings for a class I taught in Spring 2018. You should probably use Adrian's library, link below.

Original Author: Adrian Rosebrock

Original Name: imutils

Install

The preferred way to install is using pip:

pip install opencvutils

Other Libraries

You will need both numpy and opencv3 for this to work. Use your os package manager to install. Unfortunately this is not fast, numpy install involves compiling things, so go grab a coffee or something while you wait.

for macOS (please be aware, the brew people keep changing this!):

pip install numpy
brew install opencv

Development

To submit git pulls, clone the repository and set it up as follows:

git clone https://github.com/walchko/opencvutils
cd opencvutils
pip install -e .

Documentation

See the Jupyter Notebooks for examples of how to use this library. It contains a lot of common image manipulations.

Video Encoding

You can make a video like this:

import cv2
from opencvutils.Camera import SaveVideo

shape = (240,320)  # rows (height), cols (width)
sv = SaveVideo()

# you can change the default encoder using a four_cc
# string, but not all of them work!
# sv.encoder('H264')
# sv.encoder('MP4V')
# sv.encoder('x264')

sv.open(filename, shape[1], shape[0])  # order is backwards from opencv!!!

for i in range(100):
    ret, img = camera.read()  # grab image
    sv.write(img)

sv.release()

Scripts

pi@raspberry ~ $ mjpeg_server.py -h
    usage: mjpeg_server.py [-h] [-v] [-p PORT] [-c CAMERA] [-t TYPE]
                                             [-s SIZE SIZE]

    A simple mjpeg server Example: mjpeg-server -p 8080 --camera 4

    optional arguments:
    -h, --help            show this help message and exit
    -v, --version         show program's version number and exit
    -p PORT, --port PORT  mjpeg publisher port, default is 9000
    -c CAMERA, --camera CAMERA
                                                set opencv camera number, ex. -c 1
    -t TYPE, --type TYPE  set camera type, either pi or cv, ex. -t pi
    -s SIZE SIZE, --size SIZE SIZE
                                                set size

Then you could do:

pi@raspberry ~ $ mjpeg_server.py -t pi -s 640 480

now navigate to your computer (hostname:9000) and you should see the mjpg stream. Note, if you changed the port number with the -p arg, then use that port number.

Change Log

Data Version Notes
2018-07-19 0.9.4 simple clean-up and updating some things
2017-10-29 0.9.3 bug fixes
2017-04-09 0.9.0 initial python 3 support
2017-03-31 0.7.0 refactored and got rid of things I don't need
2017-01-29 0.6.0 added video capture (video and images) program
2016-12-30 0.5.3 typo fix
2016-12-30 0.5.1 refactored
2016-12-11 0.5.0 published to PyPi

MIT License

Copyright (c) 2016 Kevin J. Walchko Copyright (c) 2014 Adrian Rosebrock

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Project details


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Filename, size & hash SHA256 hash help File type Python version Upload date
opencvutils-0.9.4-py2-none-any.whl (20.5 kB) Copy SHA256 hash SHA256 Wheel py2 Jul 19, 2018
opencvutils-0.9.4-py3-none-any.whl (20.5 kB) Copy SHA256 hash SHA256 Wheel py3 Jul 19, 2018
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