Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text are shown as follows: "The two executables on Windows are called ONopencv_createsamples.exe and ONopencv_traincascade.exe."

A block of code is set as follows:

negative
    desc.txt
    images
        negative 0.png
        negative 1.png

Any command-line input or output is written as follows:

> cd negative
> forfiles /m images\*.png /c "cmd /c echo @relpath" > desc.txt

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "clicking the Next button moves you to the next screen".

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.