Image pyramid downsampling

1. How does image pyramid work?
2. What is image pyramid in digital image processing?
3. How do I downsample an image in Opencv Python?

How does image pyramid work?

Pyramid, or pyramid representation, is a type of multi-scale signal representation developed by the computer vision, image processing and signal processing communities, in which a signal or an image is subject to repeated smoothing and subsampling.

What is image pyramid in digital image processing?

Image pyramid is nothing but a method to display a multi-resolution image. The lowermost layer is a highest-resolution version of image and the topmost layer is a lowest-resolution version of the image. Image pyramids are used to handle image at different scales.

How do I downsample an image in Opencv Python?

Algorithm. Step 1: Fead the image. Step 2: Pass the image as a parameter to the pyrdown() function. Step 3: Display the output.