Practical Machine Learning and Image Processing: For Facial Recognition, Object Detection, and Pattern Recognition Using Python

© Himanshu Singh 2019

Himanshu SinghPractical Machine Learning and Image Processinghttps://doi.org/10.1007/978-1-4842-4149-3_4

4. Advanced Image Processing Using OpenCV

Himanshu Singh¹ 

(1)

Allahabad, Uttar Pradesh, India

 

Now that we have looked at the basic image processing techniques using the Scikit Image library, we can move on to its more advanced aspects. In this chapter, we use one of the most comprehensive computer vision libraries: OpenCV and examine the following concepts:

• Blending two images

• Changing the contrast and brightness of an image

• Adding text to images

• Smoothing images

• Changing the shape of images

• Effecting image thresholding

• Calculating gradients to detect edges

• Performing histogram equalization

Blending Two Images

Suppose you have two ...