Instant OpenCV Starter - download pdf or read online

By Jayneil Dalal, Sohil Patel

ISBN-10: 1782168818

ISBN-13: 9781782168812

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

Overview

  • Learn anything new straight away! a brief, quick, concentrated advisor providing instant results
  • Step through step set up of OpenCV in home windows and Linux
  • Examples and code according to real-life implementation of OpenCV to assist the reader comprehend the significance of this technology
  • Codes and algorithms with distinct explanations

In Detail

In the electronic age of picture and video sharing, the necessity for computing device imaginative and prescient is at an all time excessive. have a look round you and you'll see that computing device imaginative and prescient is being applied in all places. it truly is getting used in vehicles, social networking websites, and in numerous different fields corresponding to scientific technological know-how, robotics, safeguard, domestic automation, etc. this can be the place OpenCV comes into the image. OpenCV is the world's preferred open resource computing device imaginative and prescient library with greater than 500 optimized algorithms for snapshot and video analysis.

Instant OpenCV Starter is a realistic, hands-on advisor that can assist you comprehend the significance of laptop imaginative and prescient in actual lifestyles in addition to some of the assorted features of the OpenCV library through small programming tasks with basic, distinctive explanations.

This ebook is helping novices fast examine OpenCV to enforce quite a few desktop imaginative and prescient comparable initiatives. you'll first comprehend the significance and functions of laptop imaginative and prescient in actual existence. After that, you'll find out how to organize OpenCV, by means of a sequence of useful programming tasks to get you acquainted with a variety of features within the OpenCV library.

The booklet also will specialize in the use of OpenCV in a couple of extraordinary tasks equivalent to detecting obstacles in a given photo, hiding a picture in a distinct photograph to transmit mystery info (known as photograph steganography) in addition to do real-time video processing.

Instant OpenCV Starter will train you ways to put in and use the OpenCV library for varied basic machine imaginative and prescient comparable tasks.

What you'll study from this book

  • Discover the fundamentals of OpenCV
  • Install OpenCV in home windows and Linux
  • Learn trivial OpenCV initiatives equivalent to examining, exhibiting, cropping, and saving images
  • Understand pixel manipulation
  • Apply photograph conversions
  • Explore photograph and video processing
  • Handle troubleshooting

Approach

Get to grips with a brand new expertise, comprehend what it truly is and what it could actually do for you, after which get to paintings with an important positive aspects and tasks.A functional, quickly, and hands-on consultant for Python builders and hobbyists who are looking to start with computing device imaginative and prescient with OpenCV.

Who this ebook is written for

This booklet is excellent for builders, hobbyists, and scholars new to computing device imaginative and prescient who're seeking to get an exceptional grounding in tips on how to use the OpenCV library. It’s assumed that you'll have a few simple adventure in C/C++ programming.

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Additional info for Instant OpenCV Starter

Example text

Task Given a color image, convert it to a grayscale image. cols, CV_8UC1); // convert RGB image to GrayScale cvtColor(image, gray, CV_BGR2GRAY); // create a window to display the image namedWindow( "Color Image", CV_WINDOW_AUTOSIZE ); namedWindow("GrayScale Image", CV_WINDOW_AUTOSIZE); // display the image in the window created imshow( "Color Image", image ); imshow( "GrayScale Image", gray); // wait for a keystroke waitKey(0); return 0; } Code explanation The code is quite similar to the ones we have looked at before.

In this case, it converts a given color image to grayscale. The function takes three arguments. The first one is the matrix containing the source image (the image that we want to convert), while the second one is the matrix in which we want to store the converted image. The third argument specifies the type of conversion that we want perform and in our case, it is CV_BGR2GRAY. We can also use the above function to convert an image from a given color space model like RGB to other models such as HSV and CIELAB.

So, now let us understand how to write an OpenCV code to perform the above operation. For better understanding this process has been split into two parts. 30 Instant OpenCV Starter Part 1 – encode This is the first part of the program. Task Hide a given image in another image using image steganography. Algorithm Think of a number, for example, 126. We can say that the most important digit in this number is 1 which is in the hundredth place. It carries maximum weightage compared to the other digits 2 and 6.

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Instant OpenCV Starter by Jayneil Dalal, Sohil Patel


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