Image processing has become an increasingly important field in computer vision, especially in the age of artificial intelligence and machine learning. One of the most important techniques in image processing is Warping, which is used to manipulate and transform an image.
OpenCV is a powerful open-source library for computer vision that which provides a variety of tools for image processing and manipulation. In this blog post, we will spend our time at how to perform warping in OpenCV and how it can be used for developmental analysis.
What is Warping?
Warping is a process of transforming an image from one coordinate system to another. In other words, it is a process of changing the shape and appearance of an image without changing its content. Warping can be used for a variety of applications, such as object recognition, image restoration, and image manipulation.
You may seen such feature on pdf or Docx scanner applications.
Simply, it is a powerful tool for manipulating images and video to create a wide range of visual effects and artistic expressions.
Example use of warp perspective is in photography and art. By warping the perspective of an image, an artist can create a distorted or surreal effect that can be used to express a particular emotion or message.
How to perform Warping in OpenCV?
OpenCV itself provides several methods for performing warping approach , including the cv2.warpAffine and cv2.warpPerspective functions.
- ThewarpAffine function performs a
linear transformation on an image, such as scaling, rotation, or translation.
- On the other hand,warpPerspectiveperforms
a non-linear transformation, which is more suitable for transforming images with perspective
your_input_image.jpg is an input image to be processed.
this above code sample transforms the input image with 45 degree angle rotation and this transformed matrix value is fed to the warpAffine function for applying the image processing on the source image.