Modern C ++ for Computer Vision and Image Processing Lecture 0: - - PowerPoint PPT Presentation
Modern C ++ for Computer Vision and Image Processing Lecture 0: The basics Ignacio Vizzo and Cyrill Stachniss Course Organization Lectures: Wednesday 16:00 (CEST) Held at Youtube live-stream on the course channel. Questions via Youtube
Ignacio Vizzo and Cyrill Stachniss
Held at Youtube live-stream on the course channel. Questions via Youtube channel during the lecture.
Also offline Tutorials. Also ”on-demand” Tutorials. Not all the Tutorials are provided by me.
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Lectures : Consists of 10 lectures. Homeworks: Consists of 9 hands-on homeworks.
Plan and code inverse image search Groups of 2 people
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0Stack Overflow survey: https://insights.stackoverflow.com/survey/2018/ 0CLion survey: https://blog.jetbrains.com/clion/2015/07/infographics-cpp-facts-before-clion/
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0Image taken from https://circuitdigest.com/
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0The following slides are adapted from Avery Wang 0More info at http://www.stroustrup.com/applications.html
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0Slides adapted from Avery Wang
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0The following slides are adapted from Avery Wang
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1 main:
# @main
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push rax
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mov edi, offset std::cout
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mov esi, offset .L.str
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mov edx, 13
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call std::basic_ostream <char, std:: char_traits <char> >& std::__ostream_insert <char, std ::char_traits <char> >(std::basic_ostream <char, std:: char_traits <char> >&, char const*, long)
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xor eax, eax
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pop rcx
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ret
10 _GLOBAL__sub_I_example.cpp:
# @_GLOBAL__sub_I_example.cpp
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push rax
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mov edi, offset std::__ioinit
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call std::ios_base::Init::Init() [complete
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mov edi, offset std::ios_base::Init::~Init () [complete object destructor]
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mov esi, offset std::__ioinit
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mov edx, offset __dso_handle
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pop rax
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jmp __cxa_atexit # TAILCALL
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.asciz "Hello, world\n" 17
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Ken Thompson and Dennis Ritchie, creators of the C language. 20
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0Image taken from https://www.modernescpp.com/
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0Icon taken from Wikipedia
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USER SYSTEM usr home ivizzo
tmp local include bin lib
system folders /
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/home/ivizzo/folder/ — absolute path to a folder /home/ivizzo/file.cpp — absolute path to a file folder/file — relative path to a file
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/ — root folder ~ — home folder . — current folder .. — parent folder
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1 [/home/student]$ cat --help 2 Usage: cat [OPTION]... [FILE]... 3 Concatenate FILE(s) to standard output. 4
equivalent to -vET
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number nonempty output lines
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cat f - Output fs contents , then standard input.
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cat Copy standard input to standard output.
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1 [/home/student]$ cd D [TAB] [TAB] 2 Desktop/
Documents/ Downloads/
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1 [/home/student/Examples/placeholders]$ ls 2 u01.tex
v01.pdf v01.tex
3 u02.tex
v02.pdf v02.tex
4 u03.tex
v03.pdf v03.tex
5 6 [/home/student/Examples/placeholders]$ ls *.pdf 7 v01.pdf
v02.pdf v03.pdf
8 9 [/home/student/Examples/placeholders]$ ls u* 10 u01.tex
u02.tex u03.tex
11 12 [/home/student/Examples/placeholders]$ ls ?01* 13 u01.tex
v01.pdf v01.tex
14 15 [/home/student/Examples/placeholders]$ ls [uv]01* 16 u01.tex
v01.pdf v01.tex
17 18 [/home/student/Examples/placeholders]$ ls u0[^12].tex 19 u03.tex
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stdin: Standard input: channel 0
stdout: Standard output: channel 1 stderr: Standard error output: channel 2
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more/less/cat <filename> Print the contents of the file Most of the time using cat if enough find <in-folder> -name <filename> Search for file <filename> in folder <in-folder>, allows wildcards locate <filename> Search for file <filename> in the entire system! just remember to sudo updatedb often grep <what> <where> Search for a string <what> in a file <where> ag <what> <where> Search for a string <what> in a dir <where>
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https://youtu.be/mV_8GbzwZMM
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Shows an overview of running processes Allows to kill processes by pressing
k
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Ctrl + R
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+ 10 : execute the 10th command
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https://youtu.be/oxuRxtrO2Ag
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0Icon taken from Wikipedia
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CLion Qt Creator Eclipse
Visual Studio Code [my preference] Sublime Text 3 Atom VIM [steep learning curve] Emacs [steep learning curve]
0Most icons are from Paper Icon Set: https://snwh.org/paper
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1 #include <iostream > 2 3 int main() { 4
// Is this your first C++ program?
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std::cout << "Hello World!" << std::endl;
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return 0;
7 }
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On one line that follows // Between /* and */
1 int main() {return 0;}
// Ignored comment.
1 int main() 2 3 {
return 0;
4 } 1 int main() { 2
return /* Ignored comment */ 0;
3 }
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0https://google.github.io/styleguide/cppguide.html
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1 int main() { 2
return 0; // Program finished without errors.
3 } 1 int main() { 2
return 1; // Program finished with error code 1.
3 }
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1 #include "some_file.hpp" 2 // We can use contents of file "some_file.hpp" now. 3 int main() { return 0; }
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std::cin — maps to stdin std::cout — maps to stdout std::cerr — maps to stderr
1 #include <iostream > 2 int main() { 3
int some_number;
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std::cout << "please input any number" << std::endl;
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std::cin >> some_number;
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std::cout << "number = " << some_number << std::endl;
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std::cerr << "boring error message" << std::endl;
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return 0;
9 }
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Clang [*] [used in examples] GCC
1 c++ -std=c++11 -o hello_world hello_world.cpp 2 ./hello_world
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https://bit.ly/2JmIqGs [shortened]
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https://youtu.be/xfBWk4nw440
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http://www.stroustrup.com/4th.html
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https://en.cppreference.com/w/cpp
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https://en.cppreference.com/w/cpp
https://github.com/isocpp/CppCoreGuidelines
https://google.github.io/styleguide/cppguide.html
http://www.cplusplus.com/doc/tutorial/
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