#Conda install opencv library code#
#Conda install opencv library series#

Example: # loop over varying widths to resize the image to This resize function of imutils maintains the aspect ratio and provides the keyword arguments width and height so the image can be resized to the intended width/height while (1) maintaining aspect ratio and (2) ensuring the dimensions of the image do not have to be explicitly computed by the developer.ДЄnother optional keyword argument, inter, can be used to specify interpolation method as well. However, special care needs to be taken to ensure that the aspect ratio is maintained. Resizing an image in OpenCV is accomplished by calling the cv2.resize function. Rotated = imutils.rotate(bridge, angle=angle)Д¬v2.imshow('Angle=%d' % (angle), rotated) Example: # loop over the angles to rotate the image The rotate function in imutils helps resolve this problem.

#Conda install opencv library code#

These calculation calls can quickly add up and make your code bulky and less readable. Further care has to be taken to supply the (x, y)-coordinate of the point the image is to be rotated about. Rotating an image in OpenCV is accomplished by making a call to cv2.getRotationMatrix2D and cv2.warpAffine. Example: # translate the image x=25 pixels to the right and y=75 pixels up Instead of manually constructing the translation matrix M and calling cv2.warpAffine, you can simply make a call to the translate function of imutils. To translate an image in OpenCV you need to supply the (x, y)-shift, denoted as (t x, t y) to construct the translation matrix M:ДЄnd from there, you would need to apply the cv2.warpAffine function. Translation is the shifting of an image in either the x or y direction. LetвЂ™s go ahead and take a look at what we can do with the imutils package.

#Conda install opencv library series#

My imutils package: A series of OpenCV convenience functions

To install the the imutils library, just issue the following command: $ pip install imutils This package assumes that you already have NumPy and OpenCV installed (along with matplotlib, if you intend on using the opencv2matplotlib function). In the future we will (probably, depending on feedback in the comments section) be performing a detailed code review of each of the functions in the imutils package, but for the time being, take a look at the rest of this blog post to see the functionality included in imutils, then be sure to install it on your own system! Installing This package includes a series of OpenCV + convenience functions that perform basics tasks such as translation, rotation, resizing, and skeletonization. I use this package nearly every single day when working on computer vision and image processing problems. It makes downloading, installing, and managing Python libraries and packages a breeze.ДЄnd with all that said, I have pushed my own personal imutils package online. PyPI, the Python Package Index repository is a wonderful thing. Contributing to the open source community.