From b4f73dfa0b3d84ea3126bdf4bf9fcc49d1c80715 Mon Sep 17 00:00:00 2001 From: John Zhao Date: Tue, 29 May 2018 17:36:15 +0800 Subject: [PATCH] Add show depth values sample --- samples/api/CMakeLists.txt | 8 + samples/api/get_depth_with_region.cc | 216 +++++++++++++++++++++++++++ 2 files changed, 224 insertions(+) create mode 100644 samples/api/get_depth_with_region.cc diff --git a/samples/api/CMakeLists.txt b/samples/api/CMakeLists.txt index 9920021..8100370 100644 --- a/samples/api/CMakeLists.txt +++ b/samples/api/CMakeLists.txt @@ -27,3 +27,11 @@ make_executable(camera_a LINK_LIBS mynteye ${OpenCV_LIBS} DLL_SEARCH_PATHS ${PRO_DIR}/_install/bin ${OpenCV_LIB_SEARCH_PATH} ) + +## get_depth_with_region + +make_executable(get_depth_with_region + SRCS get_depth_with_region.cc + LINK_LIBS mynteye ${OpenCV_LIBS} + DLL_SEARCH_PATHS ${PRO_DIR}/_install/bin ${OpenCV_LIB_SEARCH_PATH} +) diff --git a/samples/api/get_depth_with_region.cc b/samples/api/get_depth_with_region.cc new file mode 100644 index 0000000..a12f023 --- /dev/null +++ b/samples/api/get_depth_with_region.cc @@ -0,0 +1,216 @@ +// Copyright 2018 Slightech Co., Ltd. All rights reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +#include +#include + +#include + +#include "mynteye/api.h" + +#define WIN_FLAGS \ + cv::WINDOW_AUTOSIZE | cv::WINDOW_KEEPRATIO | cv::WINDOW_GUI_NORMAL + +namespace { + +class DepthRegion { + public: + explicit DepthRegion(std::uint32_t n) + : n_(std::move(n)), show_(false), selected_(false), point_(0, 0) {} + + ~DepthRegion() = default; + + /** + * 鼠标事件：默认不选中区域，随鼠标移动而显示。单击后，则会选中区域来显示。你可以再单击已选中区域或双击未选中区域，取消选中。 + */ + void OnMouse(const int &event, const int &x, const int &y, const int &flags) { + UNUSED(flags) + if (event != CV_EVENT_MOUSEMOVE && event != CV_EVENT_LBUTTONDOWN) { + return; + } + show_ = true; + + if (event == CV_EVENT_MOUSEMOVE) { + if (!selected_) { + point_.x = x; + point_.y = y; + } + } else if (event == CV_EVENT_LBUTTONDOWN) { + if (selected_) { + if (x >= static_cast(point_.x - n_) && + x <= static_cast(point_.x + n_) && + y >= static_cast(point_.y - n_) && + y <= static_cast(point_.y + n_)) { + selected_ = false; + } + } else { + selected_ = true; + } + point_.x = x; + point_.y = y; + } + } + + template + void ShowElems( + const cv::Mat &depth, + std::function elem2string, + int elem_space = 40, + std::function + getinfo = nullptr) { + if (!show_) + return; + + int space = std::move(elem_space); + int n = 2 * n_ + 1; + cv::Mat im(space * n, space * n, CV_8UC3, cv::Scalar(255, 255, 255)); + + int x, y; + std::string str; + int baseline = 0; + for (int i = -n_; i <= n; ++i) { + x = point_.x + i; + if (x < 0 || x >= depth.cols) + continue; + for (int j = -n_; j <= n; ++j) { + y = point_.y + j; + if (y < 0 || y >= depth.rows) + continue; + + str = elem2string(depth.at(y, x)); + + cv::Scalar color(0, 0, 0); + if (i == 0 && j == 0) + color = cv::Scalar(0, 0, 255); + + cv::Size sz = + cv::getTextSize(str, cv::FONT_HERSHEY_PLAIN, 1, 1, &baseline); + + cv::putText( + im, str, cv::Point( + (i + n_) * space + (space - sz.width) / 2, + (j + n_) * space + (space + sz.height) / 2), + cv::FONT_HERSHEY_PLAIN, 1, color, 1); + } + } + + if (getinfo) { + std::string info = getinfo(depth, point_, n_); + if (!info.empty()) { + cv::Size sz = + cv::getTextSize(info, cv::FONT_HERSHEY_PLAIN, 1, 1, &baseline); + + cv::putText( + im, info, cv::Point(5, 5 + sz.height), cv::FONT_HERSHEY_PLAIN, 1, + cv::Scalar(255, 0, 255), 1); + } + } + + cv::imshow("region", im); + } + + void DrawRect(cv::Mat &image) { // NOLINT + if (!show_) + return; + std::uint32_t n = (n_ > 1) ? n_ : 1; + n += 1; // outside the region + cv::rectangle( + image, cv::Point(point_.x - n, point_.y - n), + cv::Point(point_.x + n, point_.y + n), + selected_ ? cv::Scalar(0, 255, 0) : cv::Scalar(0, 0, 255), 1); + } + + private: + std::uint32_t n_; + bool show_; + bool selected_; + cv::Point point_; +}; + +void OnDepthMouseCallback(int event, int x, int y, int flags, void *userdata) { + DepthRegion *region = reinterpret_cast(userdata); + region->OnMouse(event, x, y, flags); +} + +} // namespace + +MYNTEYE_USE_NAMESPACE + +int main(int argc, char *argv[]) { + auto &&api = API::Create(argc, argv); + if (!api) + return 1; + + api->EnableStreamData(Stream::DEPTH); + + api->Start(Source::VIDEO_STREAMING); + + cv::namedWindow("frame", WIN_FLAGS); + cv::namedWindow("depth", WIN_FLAGS); + cv::namedWindow("region", WIN_FLAGS); + + DepthRegion depth_region(3); + auto depth_info = []( + const cv::Mat &depth, const cv::Point &point, const std::uint32_t &n) { + UNUSED(depth) + std::ostringstream os; + os << "depth pos: [" << point.y << ", " << point.x << "]" + << "±" << n << ", unit: mm"; + return os.str(); + }; + + while (true) { + api->WaitForStreams(); + + auto &&left_data = api->GetStreamData(Stream::LEFT); + auto &&right_data = api->GetStreamData(Stream::RIGHT); + + cv::Mat img; + cv::hconcat(left_data.frame, right_data.frame, img); + cv::imshow("frame", img); + + auto &&depth_data = api->GetStreamData(Stream::DEPTH); + if (!depth_data.frame.empty()) { + auto &&depth_frame = depth_data.frame; + + cv::setMouseCallback("depth", OnDepthMouseCallback, &depth_region); + // Note: DrawRect will change some depth values to show the rect. + depth_region.DrawRect(depth_frame); + + cv::imshow("depth", depth_frame); // CV_16UC1 + + depth_region.ShowElems( + depth_frame, + [](const ushort &elem) { + if (elem >= 10000) { + // Filter errors, or limit to valid range. + // + // reprojectImageTo3D(), missing values will set to 10000 + // https://docs.opencv.org/master/d9/d0c/group__calib3d.html#ga1bc1152bd57d63bc524204f21fde6e02 + return std::string("invalid"); + } + return std::to_string(elem); + }, + 80, depth_info); + } + + char key = static_cast(cv::waitKey(1)); + if (key == 27 || key == 'q' || key == 'Q') { // ESC/Q + break; + } + } + + api->Stop(Source::VIDEO_STREAMING); + return 0; +}