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feat(src): added feature of saving single image

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This commit is contained in:
Osenberg 2019-08-09 15:51:58 +08:00
parent d041f22d7e
commit 7bd34d5cef
3 changed files with 108 additions and 0 deletions
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52
docs/src/sdk/data/save_single_image.rst Normal file
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@ -0,0 +1,52 @@
.. _data_save_single_image:
Save Single Image
=============================
Press "Space" "s" "S" to save image.
Reference commands:
.. code-block:: c++
api->Start(Source::VIDEO_STREAMING);
cv::namedWindow("frame");
std::int32_t count = 0;
std::cout << "Press 'Space' 's' 'S' to save image." << std::endl;
while (true) {
api->WaitForStreams();
auto &&left_data = api->GetStreamData(Stream::LEFT);
auto &&right_data = api->GetStreamData(Stream::RIGHT);
if (!left_data.frame.empty() && !right_data.frame.empty()) {
cv::Mat img;
cv::hconcat(left_data.frame, right_data.frame, img);
cv::imshow("frame", img);
}
char key = static_cast<char>(cv::waitKey(1));
if (key == 27 || key == 'q' || key == 'Q') { // ESC/Q
break;
} else if (key == 32 || key == 's' || key == 'S') {
if (!left_data.frame.empty() && !right_data.frame.empty()) {
char l_name[20];
char r_name[20];
++count;
snprintf(l_name, sizeof(l_name), "left_%d.jpg", count);
snprintf(r_name, sizeof(r_name), "right_%d.jpg", count);
cv::imwrite(l_name, left_data.frame);
cv::imwrite(r_name, right_data.frame);
std::cout << "Saved " << l_name << " " << r_name << " to current directory" << std::endl;
}
}
}
api->Stop(Source::VIDEO_STREAMING);
The above code uses OpenCV to display the image. When the display window is selected, pressing ``ESC/Q`` will end the program.
Complete code examples, see `save_single_image.cc <https://github.com/slightech/MYNT-EYE-S-SDK/blob/master/samples/tutorials/data/save_single_image.cc>`_ .

1
samples/tutorials/CMakeLists.txt
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@ -112,6 +112,7 @@ make_executable2(get_imu_correspondence
WITH_OPENCV
)
make_executable2(get_imu SRCS data/get_imu.cc util/cv_painter.cc WITH_OPENCV)
make_executable2(save_single_image SRCS data/save_single_image.cc WITH_OPENCV)
make_executable2(get_from_callbacks
SRCS data/get_from_callbacks.cc util/cv_painter.cc
WITH_OPENCV

55
samples/tutorials/data/save_single_image.cc Normal file
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#include <stdio.h>
#include <opencv2/highgui/highgui.hpp>
#include "mynteye/api/api.h"
MYNTEYE_USE_NAMESPACE
int main(int argc, char *argv[]) {
auto &&api = API::Create(argc, argv);
if (!api) return 1;
bool ok;
auto &&request = api->SelectStreamRequest(&ok);
if (!ok) return 1;
api->ConfigStreamRequest(request);
api->Start(Source::VIDEO_STREAMING);
cv::namedWindow("frame");
std::int32_t count = 0;
std::cout << "Press 'Space' 's' 'S' to save image." << std::endl;
while (true) {
api->WaitForStreams();
auto &&left_data = api->GetStreamData(Stream::LEFT);
auto &&right_data = api->GetStreamData(Stream::RIGHT);
if (!left_data.frame.empty() && !right_data.frame.empty()) {
cv::Mat img;
cv::hconcat(left_data.frame, right_data.frame, img);
cv::imshow("frame", img);
}
char key = static_cast<char>(cv::waitKey(1));
if (key == 27 || key == 'q' || key == 'Q') { // ESC/Q
break;
} else if (key == 32 || key == 's' || key == 'S') {
if (!left_data.frame.empty() && !right_data.frame.empty()) {
char l_name[20];
char r_name[20];
++count;
snprintf(l_name, sizeof(l_name), "left_%d.jpg", count);
snprintf(r_name, sizeof(r_name), "right_%d.jpg", count);
cv::imwrite(l_name, left_data.frame);
cv::imwrite(r_name, right_data.frame);
std::cout << "Saved " << l_name << " " << r_name << " to current directory" << std::endl;
}
}
}
api->Stop(Source::VIDEO_STREAMING);
return 0;
}