2 #include <visp3/core/vpImage.h>
3 #include <visp3/gui/vpDisplayOpenCV.h>
4 #include <visp3/gui/vpDisplayX.h>
5 #include <visp3/io/vpImageStorageWorker.h>
6 #include <visp3/sensor/vpV4l2Grabber.h>
10 void usage(
const char *argv[],
int error)
12 std::cout <<
"SYNOPSIS" << std::endl
13 <<
" " << argv[0] <<
" [--device <index>]"
14 <<
" [--scale <subsampling factor>]"
15 <<
" [--seqname <sequence name>]"
16 <<
" [--record <mode>]"
18 <<
" [--help] [-h]" << std::endl
20 std::cout <<
"DESCRIPTION" << std::endl
21 <<
" --device <index> " << std::endl
22 <<
" Camera device index. Set 0 to dial with the first camera," << std::endl
23 <<
" and 1 to dial with the second camera attached to the computer." << std::endl
24 <<
" Default: 0 to consider /dev/video0 device." << std::endl
26 <<
" --scale <subsampling factor>" << std::endl
27 <<
" Subsampling factor applied to the images captured by the device." << std::endl
28 <<
" Default: 1" << std::endl
30 <<
" --seqname <sequence name>" << std::endl
31 <<
" Name of the sequence of image to create (ie: /tmp/image%04d.jpg)." << std::endl
32 <<
" Default: empty." << std::endl
34 <<
" --record <mode>" << std::endl
35 <<
" Allowed values for mode are:" << std::endl
36 <<
" 0: record all the captures images (continuous mode)," << std::endl
37 <<
" 1: record only images selected by a user click (single shot mode)." << std::endl
38 <<
" Default mode: 0" << std::endl
40 <<
" --no-display" << std::endl
41 <<
" Disable displaying captured images." << std::endl
42 <<
" When used and sequence name specified, record mode is internally set to 1 (continuous mode)."
45 <<
" --help, -h" << std::endl
46 <<
" Print this helper message." << std::endl
48 std::cout <<
"USAGE" << std::endl
49 <<
" Example to visualize images:" << std::endl
50 <<
" " << argv[0] << std::endl
52 <<
" Example to visualize images from a second camera:" << std::endl
53 <<
" " << argv[0] <<
" --device 1" << std::endl
55 <<
" Examples to record a sequence:" << std::endl
56 <<
" " << argv[0] <<
" --seqname I%04d.png" << std::endl
57 <<
" " << argv[0] <<
" --seqname folder/I%04d.png --record 0" << std::endl
59 <<
" Examples to record single shot images:\n"
60 <<
" " << argv[0] <<
" --seqname I%04d.png --record 1\n"
61 <<
" " << argv[0] <<
" --seqname folder/I%04d.png --record 1" << std::endl
65 std::cout <<
"Error" << std::endl
67 <<
"Unsupported parameter " << argv[error] << std::endl;
77 int main(
int argc,
const char *argv[])
79 #if defined(VISP_HAVE_V4L2)
82 unsigned int opt_scale = 1;
84 std::string opt_seqname;
85 int opt_record_mode = 0;
86 bool opt_display =
true;
88 for (
int i = 1; i < argc; i++) {
89 if (std::string(argv[i]) ==
"--device") {
90 opt_device = std::atoi(argv[i + 1]);
93 else if (std::string(argv[i]) ==
"--scale") {
94 opt_scale = (
unsigned int)atoi(argv[i + 1]);
97 else if (std::string(argv[i]) ==
"--seqname") {
98 opt_seqname = std::string(argv[i + 1]);
101 else if (std::string(argv[i]) ==
"--record") {
102 opt_record_mode = std::atoi(argv[i + 1]);
105 else if (std::string(argv[i]) ==
"--no-display") {
108 else if (std::string(argv[i]) ==
"--help" || std::string(argv[i]) ==
"-h") {
118 if ((!opt_display) && (!opt_seqname.empty())) {
121 std::cout <<
"Use device : " << opt_device << std::endl;
122 std::cout <<
"Recording : " << (opt_seqname.empty() ?
"disabled" :
"enabled") << std::endl;
123 std::cout <<
"Display : " << (opt_display ?
"enabled" :
"disabled") << std::endl;
125 std::string text_record_mode =
126 std::string(
"Record mode: ") + (opt_record_mode ? std::string(
"single") : std::string(
"continuous"));
128 if (!opt_seqname.empty()) {
129 std::cout << text_record_mode << std::endl;
130 std::cout <<
"Record name: " << opt_seqname << std::endl;
140 std::ostringstream device;
141 device <<
"/dev/video" << opt_device;
146 std::cout <<
"Image size : " << I.
getWidth() <<
" " << I.
getHeight() << std::endl;
150 #if !(defined(VISP_HAVE_X11) || defined(VISP_HAVE_OPENCV))
151 std::cout <<
"No image viewer is available..." << std::endl;
158 #elif defined(HAVE_OPENCV_HIGHGUI)
180 quit = image_queue.record(I);
182 std::stringstream ss;
187 image_queue.cancel();
188 image_storage_thread.join();
195 std::cout <<
"Catch an exception: " << e << std::endl;
200 #ifndef VISP_HAVE_V4L2
201 std::cout <<
"Install Video 4 Linux 2 (v4l2), configure and build ViSP again to use this example" << std::endl;
The vpDisplayOpenCV allows to display image using the OpenCV library. Thus to enable this class OpenC...
Use the X11 console to display images on unix-like OS. Thus to enable this class X11 should be instal...
Class that defines generic functionalities for display.
static void display(const vpImage< unsigned char > &I)
static void flush(const vpImage< unsigned char > &I)
static void displayText(const vpImage< unsigned char > &I, const vpImagePoint &ip, const std::string &s, const vpColor &color)
error that can be emitted by ViSP classes.
unsigned int getWidth() const
unsigned int getHeight() const
Class that is a wrapper over the Video4Linux2 (V4L2) driver.
void open(vpImage< unsigned char > &I)
void setScale(unsigned scale=vpV4l2Grabber::DEFAULT_SCALE)
void setDevice(const std::string &devname)
void acquire(vpImage< unsigned char > &I)
VISP_EXPORT double measureTimeMs()