By Jayneil Dalal, Sohil Patel

Get began with OpenCV utilizing sensible, hands-on tasks with this ebook and ebook


  • Learn whatever new immediately! a brief, speedy, targeted advisor offering fast results
  • Step by way of step deploy of OpenCV in home windows and Linux
  • Examples and code in line with real-life implementation of OpenCV to assist the reader comprehend the significance of this technology
  • Codes and algorithms with precise explanations

In Detail

In the electronic age of photo and video sharing, the necessity for desktop imaginative and prescient is at an all time excessive. have a look round you and you may see that computing device imaginative and prescient is being applied all over. it truly is getting used in cars, social networking websites, and in a variety of different fields corresponding to clinical technology, robotics, safety, domestic automation, etc. this is often the place OpenCV comes into the image. OpenCV is the world's hottest open resource desktop imaginative and prescient library with greater than 500 optimized algorithms for snapshot and video analysis.

Instant OpenCV Starter is a realistic, hands-on consultant that can assist you comprehend the significance of laptop imaginative and prescient in genuine existence in addition to a number of the varied capabilities of the OpenCV library through small programming initiatives with easy, specific explanations.

This publication is helping newbies speedy study OpenCV to enforce a number of machine imaginative and prescient comparable projects. you'll first comprehend the significance and functions of machine imaginative and prescient in actual existence. After that, you'll the right way to manage OpenCV, by way of a sequence of useful programming initiatives to get you accustomed to quite a few capabilities within the OpenCV library.

The ebook also will concentrate on the use of OpenCV in a couple of extraordinary tasks comparable to detecting limitations in a given snapshot, hiding a picture in a distinct snapshot to transmit mystery details (known as photograph steganography) in addition to do real-time video processing.

Instant OpenCV Starter will educate you the way to put in and use the OpenCV library for numerous basic laptop imaginative and prescient similar tasks.

What you are going to study from this book

  • Discover the fundamentals of OpenCV
  • Install OpenCV in home windows and Linux
  • Learn trivial OpenCV initiatives resembling studying, showing, cropping, and saving images
  • Understand pixel manipulation
  • Apply photo conversions
  • Explore photograph and video processing
  • Handle troubleshooting


Get to grips with a brand new expertise, comprehend what it truly is and what it might probably do for you, after which get to paintings with an important positive factors and tasks.A functional, quickly, and hands-on advisor for Python builders and hobbyists who are looking to start with desktop imaginative and prescient with OpenCV.

Who this publication is written for

This booklet is superb for builders, hobbyists, and scholars new to desktop imaginative and prescient who're seeking to get a great grounding in the right way to use the OpenCV library. It’s assumed that you'll have a few easy adventure in C/C++ programming.

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Extra resources for Instant OpenCV Starter

Example text

This provision does not disrupt the information content of either of the images. Image steganography can lead to a loss of a lot of information. Therefore, in our case, we have stored the first four bits (starting from the MSB) of each pixel in the hidden image in the last four bits (ending at the LSB) of each pixel in the front image. at(j,i)[0] = tHidden_image. at(j,i)[1] = tHidden_image. at(j,i)[2] = tHidden_image. at(j,i)[2] >> 4; } bitwise_or(tFront_image, tHidden_image, aStegedImage); } Code explanation The function which will perform the image steganography is as follows: void steganographMyImage(Mat& aFrontImage, Mat& aHiddenImage, Mat& aStegedImage) This function takes three parameters.

Short comments have also been included in the code itself to increase the readability. hpp" The preceding two header files will be a part of almost every program we write using the OpenCV library. As explained earlier, the highgui header is used for window creation, management, and so on, while the core header is used to access the Mat data structure in OpenCV. using namespace cv; using namespace std; 19 Instant OpenCV Starter The preceding two lines declare the required namespaces for this code so that we don't have to use the :: (scope resolution) operator every time for accessing the functions.

The preceding function takes six parameters, out of which the first one is the variable containing the source image to be modified. The second one is the variable to store the resized image. The third parameter is the output image size. In this case we have not specified this, but we have instead used the Size() function, which will automatically calculate it based on the values of the fourth and fifth parameters. The fourth and fifth parameters are the scale factors along the horizontal and vertical axes respectively.

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