- #Opencv write text on image how to#
- #Opencv write text on image code#
- #Opencv write text on image series#
#Opencv write text on image code#
If you run the code you will get a window with a completely black background. This will be the starting code of the examples to follow. $ nano draw01.pyĪnd copy the following code import numpy as np Create a draw01.py file with a text editor.
![opencv write text on image opencv write text on image](https://www.pytorials.com/wp-content/uploads/2018/01/face-recognition-using-opencv-2.png)
$ source ~/.profileįor convenience, this example will use a black background where you build geometric shapes.
![opencv write text on image opencv write text on image](https://i.ytimg.com/vi/qefhj6a6NuQ/maxresdefault.jpg)
Open a terminal session and make starting the virtual environment where you installed OpenCV 3.0 for Python. If you’re not familiar with this type of commands, you do not have to worry as in the following examples, each command will be explained in detail and step by step.
#Opencv write text on image series#
You’ve already worked with other programming languages to design, you will find this series of commands very easy and intuitive. These basic geometric shapes are often called as primitive and are crucial figures such as points, lines, circles, rectangles that allow the construction of more complex geometric figures. These functions accept the topics in which the geometric coordinates are specified that define the figures. Other examples could be for example the addition of a grid, or the addition of a contour which demarcates a figure, etc ….ĭuring this article you will see that these operations can be performed using simple functions, each specialized for a given basic geometrical figure.
![opencv write text on image opencv write text on image](https://2.bp.blogspot.com/-6-LZMlrk8XQ/Ub3oCKk7XAI/AAAAAAAAAZY/uIpQuwro9_c/s640/CreateImage.png)
Often working with image analysis, you want to highlight a portion of the image, for example by adding a rectangle that defines that portion, for example, or an arrow to indicate that. The ability to add lines, circles and geometric shapes over an image is an operation that will prove very useful later. One of the basic operations of OpenCV is the ability to draw over the image. The following examples are all run on Raspberry Pi 3 Model B Draw on an image with OpenCV
#Opencv write text on image how to#
You’ll see how to draw geometric shapes and add text over an existing image. This article will begin to do one of the basic operations with the OpenCV library.