The imshow function in pyplot module of matplotlib library is used to display data as an image.
Opencv imshow matplotlib.
Additionally the antigrain image resize filter is controlled by the parameter filternorm.
Import cv2 image cv2 imread chelsea the cat png plt axis off plt imshow image plt show again the code is simple.
So we can show them as we do normally using cv imshow function.
How to display a matplotlib rgb image using opencv in python this post will be helpful in learning opencv using python programming.
Some interpolation methods require an additional radius parameter which can be set by filterrad.
Method 2.
Opencv follows bgr order while matplotlib likely follows rgb order.
Unless extent is used pixel centers will be located at integer coordinates.
Therefore when we display an image loaded in opencv using matplotlib functions we may want to convert it into rgb mode.
But the results aren t as expected.
Method 1.
So let s load up an image using opencv and display it with matplotlib.
Matplotlib pyplot imshow matplotlib pyplot imshow x cmap none norm none aspect none interpolation none alpha none vmin none vmax none origin none extent none filternorm true filterrad 4 0 resample none url none data none kwargs source display data as an image i e on a 2d regular raster.
Loading an image with opencv and displaying it with matplotlib.
There is a difference in pixel ordering in opencv and matplotlib.
There are two common representations for rgb images with an alpha channel.
It will be a grayscale image and it won t give much idea what colors are there unless you know the hue values of different colors.
The input may either be actual rgb a data or.
Matplotlib pyplot imshow x cmap none norm none aspect none interpolation none alpha none vmin none vmax none origin none extent none shape filternorm 1 filterrad 4 0 imlim resample none url none data none kwargs.
Here i will show how to implement opencv functions and apply them in various aspects using some great examples.
See interpolations for imshow matshow for an overview of the supported interpolation methods.