Book Image

Hands-On GPU-Accelerated Computer Vision with OpenCV and CUDA

By : Bhaumik Vaidya
Book Image

Hands-On GPU-Accelerated Computer Vision with OpenCV and CUDA

By: Bhaumik Vaidya

Overview of this book

Computer vision has been revolutionizing a wide range of industries, and OpenCV is the most widely chosen tool for computer vision with its ability to work in multiple programming languages. Nowadays, in computer vision, there is a need to process large images in real time, which is difficult to handle for OpenCV on its own. This is where CUDA comes into the picture, allowing OpenCV to leverage powerful NVDIA GPUs. This book provides a detailed overview of integrating OpenCV with CUDA for practical applications. To start with, you’ll understand GPU programming with CUDA, an essential aspect for computer vision developers who have never worked with GPUs. You’ll then move on to exploring OpenCV acceleration with GPUs and CUDA by walking through some practical examples. Once you have got to grips with the core concepts, you’ll familiarize yourself with deploying OpenCV applications on NVIDIA Jetson TX1, which is popular for computer vision and deep learning applications. The last chapters of the book explain PyCUDA, a Python library that leverages the power of CUDA and GPUs for accelerations and can be used by computer vision developers who use OpenCV with Python. By the end of this book, you’ll have enhanced computer vision applications with the help of this book's hands-on approach.
Table of Contents (15 chapters)

Working with PyCUDA

In the last chapter, we saw the procedure to install PyCUDA for Windows and Linux operating systems. In this chapter, we will start by developing the first PyCUDA program that displays a string on the console. It is very important to know and access the device properties of the GPU on which PyCUDA is running; the method for doing this will be discussed in detail in this chapter. We will also look at the execution of threads and blocks for a kernel in PyCUDA. The important programming concepts for any CUDA programming, such as allocating and deallocating the memory on the device, transferring data from host to device and vice versa, and the kernel call will be discussed in detail, using an example of the vector addition program. The method to measure the performance of PyCUDA programs using CUDA events and to compare it with the CPU program will also be discussed...