Files
MAXINE-AR-SDK/samples/FaceTrack/FaceTrack.cpp
Joy D'Souza ca10ac3b39 v0.8.2.0 Release
v0.8.2.0 Release
2023-01-06 10:03:38 -08:00

1139 lines
41 KiB
C++

/*###############################################################################
#
# Copyright 2020 NVIDIA Corporation
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
###############################################################################*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <algorithm>
#include <chrono>
#include <cmath>
#include <ctime>
#include <iomanip>
#include <iostream>
#include <fstream>
#include "FaceEngine.h"
#include "RenderingUtils.h"
#include "nvAR.h"
#include "nvAR_defs.h"
#include "opencv2/opencv.hpp"
#if CV_MAJOR_VERSION >= 4
#define CV_CAP_PROP_FRAME_WIDTH cv::CAP_PROP_FRAME_WIDTH
#define CV_CAP_PROP_FRAME_HEIGHT cv::CAP_PROP_FRAME_HEIGHT
#define CV_CAP_PROP_FPS cv::CAP_PROP_FPS
#define CV_CAP_PROP_FRAME_COUNT cv::CAP_PROP_FRAME_COUNT
#endif
#ifndef M_PI
#define M_PI 3.1415926535897932385
#endif /* M_PI */
#ifndef M_2PI
#define M_2PI 6.2831853071795864769
#endif /* M_2PI */
#ifndef M_PI_2
#define M_PI_2 1.5707963267948966192
#endif /* M_PI_2 */
#define F_PI ((float)M_PI)
#define F_PI_2 ((float)M_PI_2)
#define F_2PI ((float)M_2PI)
#ifdef _MSC_VER
#define strcasecmp _stricmp
#endif /* _MSC_VER */
#define BAIL(err, code) \
do { \
err = code; \
goto bail; \
} while (0)
/********************************************************************************
* Command-line arguments
********************************************************************************/
bool FLAG_debug = false, FLAG_verbose = false, FLAG_temporal = true, FLAG_captureOutputs = false,
FLAG_offlineMode = false, FLAG_isNumLandmarks126 = false; unsigned int FLAG_landmarkMode = 0;
std::string FLAG_outDir, FLAG_inFile, FLAG_outFile, FLAG_modelPath, FLAG_landmarks, FLAG_proxyWireframe,
FLAG_captureCodec = "avc1", FLAG_camRes, FLAG_faceModel;
unsigned int FLAG_appMode = 2;
/********************************************************************************
* Usage
********************************************************************************/
static void Usage() {
printf(
"FaceTrack [<args> ...]\n"
"where <args> is\n"
" --verbose[=(true|false)] report interesting info\n"
" --debug[=(true|false)] report debugging info\n"
" --temporal[=(true|false)] temporally optimize face rect and landmarks\n"
" --capture_outputs[=(true|false)] enables video/image capture and writing face detection/landmark outputs\n"
" --offline_mode[=(true|false)] disables webcam, reads video from file and writes output video results\n"
" --cam_res=[WWWx]HHH specify resolution as height or width x height\n"
" --codec=<fourcc> FOURCC code for the desired codec (default H264)\n"
" --in=<file> specify the input file\n"
" --out=<file> specify the output file\n"
" --model_path=<path> specify the directory containing the TRT models\n"
" --landmarks_126[=(true|false)] set the number of facial landmark points to 126, otherwise default to 68\n"
" --face_model=<file> specify the name of the face model\n"
" --wireframe_mesh=<path> specify the path to a proxy wireframe mesh\n"
" --app_mode[=(0|1|2)] App mode. 0: Face detection, 1: Landmark detection, 2: Face fitting "
"(Default).\n"
" --landmark_mode Select Landmark Detection Model. 0: Performance (Default), 1: Quality\n"
" --benchmarks[=<pattern>] run benchmarks\n");
}
static bool GetFlagArgVal(const char *flag, const char *arg, const char **val) {
if (*arg != '-') {
return false;
}
while (*++arg == '-') {
continue;
}
const char *s = strchr(arg, '=');
if (s == NULL) {
if (strcmp(flag, arg) != 0) {
return false;
}
*val = NULL;
return true;
}
unsigned n = (unsigned)(s - arg);
if ((strlen(flag) != n) || (strncmp(flag, arg, n) != 0)) {
return false;
}
*val = s + 1;
return true;
}
static bool GetFlagArgVal(const char *flag, const char *arg, std::string *val) {
const char *valStr;
if (!GetFlagArgVal(flag, arg, &valStr)) return false;
val->assign(valStr ? valStr : "");
return true;
}
static bool GetFlagArgVal(const char *flag, const char *arg, bool *val) {
const char *valStr;
bool success = GetFlagArgVal(flag, arg, &valStr);
if (success) {
*val = (valStr == NULL || strcasecmp(valStr, "true") == 0 || strcasecmp(valStr, "on") == 0 ||
strcasecmp(valStr, "yes") == 0 || strcasecmp(valStr, "1") == 0);
}
return success;
}
bool GetFlagArgVal(const char *flag, const char *arg, long *val) {
const char *valStr;
bool success = GetFlagArgVal(flag, arg, &valStr);
if (success) {
*val = strtol(valStr, NULL, 10);
}
return success;
}
static bool GetFlagArgVal(const char *flag, const char *arg, unsigned *val) {
long longVal;
bool success = GetFlagArgVal(flag, arg, &longVal);
if (success) {
*val = (unsigned)longVal;
}
return success;
}
/********************************************************************************
* StringToFourcc
********************************************************************************/
static int StringToFourcc(const std::string &str) {
union chint {
int i;
char c[4];
};
chint x = {0};
for (int n = (str.size() < 4) ? (int)str.size() : 4; n--;) x.c[n] = str[n];
return x.i;
}
/********************************************************************************
* ParseMyArgs
********************************************************************************/
static int ParseMyArgs(int argc, char **argv) {
// query NVAR_MODEL_DIR environment variable first before checking the command line arguments
const char* modelPath = getenv("NVAR_MODEL_DIR");
if (modelPath) {
FLAG_modelPath = modelPath;
}
int errs = 0;
for (--argc, ++argv; argc--; ++argv) {
bool help;
const char *arg = *argv;
if (arg[0] != '-') {
continue;
} else if ((arg[1] == '-') &&
(GetFlagArgVal("verbose", arg, &FLAG_verbose) || GetFlagArgVal("debug", arg, &FLAG_debug) ||
GetFlagArgVal("in", arg, &FLAG_inFile) || GetFlagArgVal("in_file", arg, &FLAG_inFile) ||
GetFlagArgVal("out", arg, &FLAG_outFile) || GetFlagArgVal("out_file", arg, &FLAG_outFile) ||
GetFlagArgVal("offline_mode", arg, &FLAG_offlineMode) ||
GetFlagArgVal("landmarks_126", arg, &FLAG_isNumLandmarks126) ||
GetFlagArgVal("capture_outputs", arg, &FLAG_captureOutputs) ||
GetFlagArgVal("cam_res", arg, &FLAG_camRes) || GetFlagArgVal("codec", arg, &FLAG_captureCodec) ||
GetFlagArgVal("landmarks", arg, &FLAG_landmarks) || GetFlagArgVal("model_path", arg, &FLAG_modelPath) ||
GetFlagArgVal("wireframe_mesh", arg, &FLAG_proxyWireframe) ||
GetFlagArgVal("face_model", arg, &FLAG_faceModel) ||
GetFlagArgVal("app_mode", arg, &FLAG_appMode) || GetFlagArgVal("temporal", arg, &FLAG_temporal) ||
GetFlagArgVal("landmark_mode", arg, &FLAG_landmarkMode))) {
continue;
} else if (GetFlagArgVal("help", arg, &help)) {
Usage();
} else if (arg[1] != '-') {
for (++arg; *arg; ++arg) {
if (*arg == 'v') {
FLAG_verbose = true;
} else {
// printf("Unknown flag: \"-%c\"\n", *arg);
}
}
continue;
} else {
// printf("Unknown flag: \"%s\"\n", arg);
}
}
return errs;
}
enum {
myErrNone = 0,
myErrShader = -1,
myErrProgram = -2,
myErrTexture = -3,
};
#if 1
class MyTimer {
public:
MyTimer() { dt = dt.zero(); } /**< Clear the duration to 0. */
void start() { t0 = std::chrono::high_resolution_clock::now(); } /**< Start the timer. */
void pause() { dt = std::chrono::high_resolution_clock::now() - t0; } /**< Pause the timer. */
void resume() { t0 = std::chrono::high_resolution_clock::now() - dt; } /**< Resume the timer. */
void stop() { pause(); } /**< Stop the timer. */
double elapsedTimeFloat() const {
return std::chrono::duration<double>(dt).count();
} /**< Report the elapsed time as a float. */
private:
std::chrono::high_resolution_clock::time_point t0;
std::chrono::high_resolution_clock::duration dt;
};
#endif
std::string getCalendarTime() {
// Get the current time
std::chrono::system_clock::time_point currentTimePoint = std::chrono::system_clock::now();
// Convert to time_t from time_point
std::time_t currentTime = std::chrono::system_clock::to_time_t(currentTimePoint);
// Convert to tm to get structure holding a calendar date and time broken down into its components.
std::tm brokenTime = *std::localtime(&currentTime);
std::ostringstream calendarTime;
// calendarTime << std::put_time(
// &brokenTime,
// "%Y-%m-%d-%H-%M-%S"); // (YYYY-MM-DD-HH-mm-ss)<Year>-<Month>-<Date>-<Hour>-<Mins>-<Seconds>
char time_string[24];
if (0 < strftime(time_string, sizeof(time_string), "%Y-%m-%d-%H-%M-%S] ", &brokenTime))
calendarTime << time_string; // (YYYY-MM-DD-HH-mm-ss)<Year>-<Month>-<Date>-<Hour>-<Mins>-<Seconds>
// Get the time since epoch 0(Thu Jan 1 00:00:00 1970) and the remainder after division is
// our milliseconds
std::chrono::milliseconds currentMilliseconds =
std::chrono::duration_cast<std::chrono::milliseconds>(currentTimePoint.time_since_epoch()) % 1000;
// Append the milliseconds to the stream
calendarTime << "-" << std::setfill('0') << std::setw(3) << currentMilliseconds.count(); // milliseconds
return calendarTime.str();
}
class DoApp {
public:
enum Err {
errNone = FaceEngine::Err::errNone,
errGeneral = FaceEngine::Err::errGeneral,
errRun = FaceEngine::Err::errRun,
errInitialization = FaceEngine::Err::errInitialization,
errRead = FaceEngine::Err::errRead,
errEffect = FaceEngine::Err::errEffect,
errParameter = FaceEngine::Err::errParameter,
errUnimplemented,
errMissing,
errVideo,
errImageSize,
errNotFound,
errFaceModelInit,
errGLFWInit,
errGLInit,
errRendererInit,
errGLResource,
errGLGeneric,
errFaceFit,
errNoFace,
errSDK,
errCuda,
errCancel,
errCamera
};
Err doAppErr(FaceEngine::Err status) { return (Err)status; }
FaceEngine face_ar_engine;
DoApp();
~DoApp();
void stop();
Err initFaceEngine(const char *modelPath = nullptr, bool isLandmarks126 = false, int mode = 0);
Err initCamera(const char *camRes = nullptr);
Err initOfflineMode(const char *inputFilename = nullptr, const char *outputFilename = nullptr);
Err acquireFrame();
Err acquireFaceBox();
Err acquireFaceBoxAndLandmarks();
Err fitFaceModel();
Err run();
void showFaceFitErrorMessage();
void drawFPS(cv::Mat &img);
void DrawBBoxes(const cv::Mat &src, NvAR_Rect *output_bbox);
void DrawLandmarkPoints(const cv::Mat &src, NvAR_Point2f *facial_landmarks, int numLandmarks);
void DrawFaceMesh(const cv::Mat &src, NvAR_FaceMesh *face_mesh);
void drawKalmanStatus(cv::Mat &img);
void drawVideoCaptureStatus(cv::Mat &img);
Err setProxyWireframe(const char *path);
void processKey(int key);
void writeVideoAndEstResults(const cv::Mat &frame, NvAR_BBoxes output_bboxes, NvAR_Point2f *landmarks = NULL);
void writeFrameAndEstResults(const cv::Mat &frame, NvAR_BBoxes output_bboxes, NvAR_Point2f *landmarks = NULL);
void writeEstResults(std::ofstream &outputFile, NvAR_BBoxes output_bboxes, NvAR_Point2f *landmarks = NULL);
void getFPS();
static const char *errorStringFromCode(Err code);
cv::VideoCapture cap{};
cv::Mat frame, outputFrame;
int inputWidth, inputHeight;
cv::VideoWriter faceDetectOutputVideo{}, landMarkOutputVideo{}, faceFittingOutputVideo{};
int frameIndex;
static const char windowTitle[];
double frameTime;
const int batchSize = 1;
// std::chrono::high_resolution_clock::time_point frameTimer;
MyTimer frameTimer;
cv::VideoWriter capturedVideo;
std::ofstream faceEngineVideoOutputFile;
FILE *exprFile, *shapeFile, *poseFile;
FaceEngine::Err nvErr;
float expr[6];
bool drawVisualization, showFPS, captureVideo, captureFrame;
std::vector<std::array<uint16_t, 3>> proxyWireframe;
float scaleOffsetXY[4];
std::vector<NvAR_Vector3u16> wfMesh_tvi_data;
};
DoApp *gApp = nullptr;
const char DoApp::windowTitle[] = "FaceTrack App";
void DoApp::processKey(int key) {
switch (key) {
case '3':
face_ar_engine.destroyFeatures();
face_ar_engine.setAppMode(FaceEngine::mode::faceMeshGeneration);
nvErr = face_ar_engine.createFeatures(FLAG_modelPath.c_str());
if (nvErr == FaceEngine::Err::errNone) {
face_ar_engine.initFeatureIOParams();
break;
} else if (nvErr == FaceEngine::Err::errInitialization) {
showFaceFitErrorMessage();
// If there is an error, fallback to mode '2' i.e. landmark detection
}
case '2':
face_ar_engine.destroyFeatures();
face_ar_engine.setAppMode(FaceEngine::mode::landmarkDetection);
face_ar_engine.createFeatures(FLAG_modelPath.c_str());
face_ar_engine.initFeatureIOParams();
break;
case '1':
face_ar_engine.destroyFeatures();
face_ar_engine.setAppMode(FaceEngine::mode::faceDetection);
face_ar_engine.createFeatures(FLAG_modelPath.c_str());
face_ar_engine.initFeatureIOParams();
break;
case 'C':
case 'c':
captureVideo = !captureVideo;
break;
case 'S':
case 's':
captureFrame = !captureFrame;
break;
case 'W':
case 'w':
drawVisualization = !drawVisualization;
break;
case 'F':
case 'f':
showFPS = !showFPS;
break;
default:
break;
}
}
DoApp::Err DoApp::initFaceEngine(const char *modelPath, bool isNumLandmarks126, int mode) {
if (!cap.isOpened()) return errVideo;
int numLandmarkPoints = isNumLandmarks126 ? 126 : 68;
face_ar_engine.setNumLandmarks(numLandmarkPoints);
nvErr = face_ar_engine.createFeatures(modelPath, batchSize, mode);
if (nvErr != FaceEngine::Err::errNone) {
if (nvErr == FaceEngine::Err::errInitialization && face_ar_engine.appMode == FaceEngine::mode::faceMeshGeneration) {
showFaceFitErrorMessage();
printf("WARNING: face fitting has failed, trying to initialize Landmark Detection\n");
face_ar_engine.destroyFeatures();
face_ar_engine.setAppMode(FaceEngine::mode::landmarkDetection);
nvErr = face_ar_engine.createFeatures(modelPath, batchSize, mode);
}
}
#ifdef DEBUG
detector->setOutputLocation(outputDir);
#endif // DEBUG
#define VISUALIZE
#ifdef VISUALIZE
if (!FLAG_offlineMode) cv::namedWindow(windowTitle, 1);
#endif // VISUALIZE
frameIndex = 0;
return doAppErr(nvErr);
}
void DoApp::stop() {
face_ar_engine.destroyFeatures();
if (FLAG_offlineMode) {
faceDetectOutputVideo.release();
landMarkOutputVideo.release();
faceFittingOutputVideo.release();
}
cap.release();
#ifdef VISUALIZE
cv::destroyAllWindows();
#endif // VISUALIZE
}
void DoApp::showFaceFitErrorMessage() {
cv::Mat errBox = cv::Mat::zeros(120, 640, CV_8UC3);
cv::putText(errBox, cv::String("Warning: Face Fitting needs face_model2.nvf in the path --model_path"), cv::Point(20, 20),
cv::FONT_HERSHEY_SIMPLEX, 0.5, cv::Scalar(255, 255, 255), 1);
cv::putText(errBox, cv::String("or in NVAR_MODEL_DIR environment variable."), cv::Point(20, 40), cv::FONT_HERSHEY_SIMPLEX,
0.5, cv::Scalar(255, 255, 255), 1);
cv::putText(errBox, cv::String("See samples\\FaceTrack\\Readme.txt"), cv::Point(20, 60), cv::FONT_HERSHEY_SIMPLEX,
0.5, cv::Scalar(255, 255, 255), 1);
cv::putText(errBox, cv::String("Press any key to continue with other features"), cv::Point(20, 80), cv::FONT_HERSHEY_SIMPLEX, 0.5,
cv::Scalar(255, 255, 255), 1);
cv::imshow(windowTitle, errBox);
cv::waitKey(0);
}
void DoApp::DrawBBoxes(const cv::Mat &src, NvAR_Rect *output_bbox) {
cv::Mat frm;
if (FLAG_offlineMode)
frm = src.clone();
else
frm = src;
if (output_bbox)
cv::rectangle(frm, cv::Point(lround(output_bbox->x), lround(output_bbox->y)),
cv::Point(lround(output_bbox->x + output_bbox->width), lround(output_bbox->y + output_bbox->height)),
cv::Scalar(255, 0, 0), 2);
if (FLAG_offlineMode) faceDetectOutputVideo.write(frm);
}
void DoApp::writeVideoAndEstResults(const cv::Mat &frm, NvAR_BBoxes output_bboxes, NvAR_Point2f *landmarks) {
if (captureVideo) {
if (!capturedVideo.isOpened()) {
const std::string currentCalendarTime = getCalendarTime();
const std::string capturedOutputFileName = currentCalendarTime + ".mp4";
getFPS();
if (frameTime) {
float fps = (float)(1.0 / frameTime);
capturedVideo.open(capturedOutputFileName, StringToFourcc(FLAG_captureCodec), fps,
cv::Size(frm.cols, frm.rows));
if (!capturedVideo.isOpened()) {
std::cout << "Error: Could not open video: \"" << capturedOutputFileName << "\"\n";
return;
}
if (FLAG_verbose) {
std::cout << "Capturing video started" << std::endl;
}
} else { // If frameTime is 0.f, returns without writing the frame to the Video
return;
}
const std::string outputsFileName = currentCalendarTime + ".txt";
faceEngineVideoOutputFile.open(outputsFileName, std::ios_base::out);
if (!faceEngineVideoOutputFile.is_open()) {
std::cout << "Error: Could not open file: \"" << outputsFileName << "\"\n";
return;
}
std::string landmarkDetectionMode = (landmarks == NULL) ? "Off" : "On";
faceEngineVideoOutputFile << "// FaceDetectOn, LandmarkDetect" << landmarkDetectionMode << "\n ";
faceEngineVideoOutputFile
<< "// kNumFaces, (bbox_x, bbox_y, bbox_w, bbox_h){ kNumFaces}, kNumLMs, [lm_x, lm_y]{kNumLMs}\n";
}
// Write each frame to the Video
capturedVideo << frm;
writeEstResults(faceEngineVideoOutputFile, output_bboxes, landmarks);
} else {
if (capturedVideo.isOpened()) {
if (FLAG_verbose) {
std::cout << "Capturing video ended" << std::endl;
}
capturedVideo.release();
if (faceEngineVideoOutputFile.is_open()) faceEngineVideoOutputFile.close();
}
}
}
void DoApp::writeEstResults(std::ofstream &outputFile, NvAR_BBoxes output_bboxes, NvAR_Point2f *landmarks) {
/**
* Output File Format :
* FaceDetectOn, LandmarkDetectOn
* kNumFaces, (bbox_x, bbox_y, bbox_w, bbox_h){ kNumFaces}, kNumLMs, [lm_x, lm_y]{kNumLMs}
*/
int faceDetectOn = (face_ar_engine.appMode == FaceEngine::mode::faceDetection ||
face_ar_engine.appMode == FaceEngine::mode::landmarkDetection ||
face_ar_engine.appMode == FaceEngine::mode::faceMeshGeneration)
? 1
: 0;
int landmarkDetectOn = (face_ar_engine.appMode == FaceEngine::mode::landmarkDetection ||
face_ar_engine.appMode == FaceEngine::mode::faceMeshGeneration)
? 1
: 0;
outputFile << faceDetectOn << "," << landmarkDetectOn << "\n";
if (faceDetectOn && output_bboxes.num_boxes) {
// Append number of faces detected in the current frame
outputFile << unsigned(output_bboxes.num_boxes) << ",";
// write outputbboxes to outputFile
for (size_t i = 0; i < output_bboxes.num_boxes; i++) {
int x1 = (int)output_bboxes.boxes[i].x, y1 = (int)output_bboxes.boxes[i].y,
width = (int)output_bboxes.boxes[i].width, height = (int)output_bboxes.boxes[i].height;
outputFile << x1 << "," << y1 << "," << width << "," << height << ",";
}
} else {
outputFile << "0,";
}
if (landmarkDetectOn && output_bboxes.num_boxes) {
int numLandmarks = face_ar_engine.getNumLandmarks();
// Append number of landmarks
outputFile << numLandmarks << ",";
// Append 2 * number of landmarks values
NvAR_Point2f *pt, *endPt;
for (endPt = (pt = (NvAR_Point2f *)landmarks) + numLandmarks; pt < endPt; ++pt)
outputFile << pt->x << "," << pt->y << ",";
} else {
outputFile << "0,";
}
outputFile << "\n";
}
void DoApp::writeFrameAndEstResults(const cv::Mat &frm, NvAR_BBoxes output_bboxes, NvAR_Point2f *landmarks) {
if (captureFrame) {
const std::string currentCalendarTime = getCalendarTime();
const std::string capturedFrame = currentCalendarTime + ".png";
cv::imwrite(capturedFrame, frm);
if (FLAG_verbose) {
std::cout << "Captured the frame" << std::endl;
}
// Write Face Engine Outputs
const std::string outputFilename = currentCalendarTime + ".txt";
std::ofstream outputFile;
outputFile.open(outputFilename, std::ios_base::out);
if (!outputFile.is_open()) {
std::cout << "Error: Could not open file: \"" << outputFilename << "\"\n";
return;
}
std::string landmarkDetectionMode = (landmarks == NULL) ? "Off" : "On";
outputFile << "// FaceDetectOn, LandmarkDetect" << landmarkDetectionMode << "\n";
outputFile << "// kNumFaces, (bbox_x, bbox_y, bbox_w, bbox_h){ kNumFaces}, kNumLMs, [lm_x, lm_y]{kNumLMs}\n";
writeEstResults(outputFile, output_bboxes, landmarks);
if (outputFile.is_open()) outputFile.close();
captureFrame = false;
}
}
void DoApp::DrawLandmarkPoints(const cv::Mat &src, NvAR_Point2f *facial_landmarks, int numLandmarks) {
cv::Mat frm;
if (FLAG_offlineMode)
frm = src.clone();
else
frm = src;
NvAR_Point2f *pt, *endPt;
// Draw larger keypoints if input frame is greater than 720p resolution
int circle_radius = (frm.rows <= 720) ? 1 : 2;
for (endPt = (pt = (NvAR_Point2f *)facial_landmarks) + numLandmarks; pt < endPt; ++pt)
cv::circle(frm, cv::Point(lround(pt->x), lround(pt->y)), circle_radius, cv::Scalar(0, 0, 255), -1);
NvAR_Quaternion *pose = face_ar_engine.getPose();
if (pose)
face_ar_engine.DrawPose(frm, pose);
if (FLAG_offlineMode) landMarkOutputVideo.write(frm);
}
void DoApp::DrawFaceMesh(const cv::Mat &src, NvAR_FaceMesh *face_mesh) {
cv::Mat render_frame;
if (FLAG_offlineMode)
render_frame = src.clone();
else
render_frame = src;
const cv::Scalar wfColor(0, 160, 0, 255);
//Low resolution mesh can be used for visualization only
if (proxyWireframe.size() > 0) {
NvAR_FaceMesh wfMesh{nullptr, 0, nullptr, 0};
wfMesh.num_vertices = face_mesh->num_vertices;
wfMesh.vertices = face_mesh->vertices;
wfMesh.num_triangles = proxyWireframe.size();
wfMesh_tvi_data.resize(wfMesh.num_triangles);
wfMesh.tvi = wfMesh_tvi_data.data();
for (int i = 0; i < proxyWireframe.size(); i++) {
auto proxyWireframe_idx = proxyWireframe[i];
wfMesh.tvi[i].vec[0] = proxyWireframe_idx[0];
wfMesh.tvi[i].vec[1] = proxyWireframe_idx[1];
wfMesh.tvi[i].vec[2] = proxyWireframe_idx[2];
}
draw_wireframe(render_frame, wfMesh, *face_ar_engine.getRenderingParams(), wfColor);
} else {
draw_wireframe(render_frame, *face_mesh, * face_ar_engine.getRenderingParams(), wfColor);
}
if (FLAG_offlineMode) faceFittingOutputVideo.write(render_frame);
}
DoApp::Err DoApp::acquireFrame() {
Err err = errNone;
// If the machine goes to sleep with the app running and then wakes up, the camera object is not destroyed but the
// frames we try to read are empty. So we try to re-initialize the camera with the same resolution settings. If the
// resolution has changed, you will need to destroy and create the features again with the new camera resolution (not
// done here) as well as reallocate memory accordingly with FaceEngine::initFeatureIOParams()
cap >> frame; // get a new frame from camera into the class variable frame.
if (frame.empty()) {
// if in Offline mode, this means end of video,so we return
if (FLAG_offlineMode) return errVideo;
// try Init one more time if reading frames from camera
err = initCamera(FLAG_camRes.c_str());
if (err != errNone)
return err;
cap >> frame;
if (frame.empty()) return errVideo;
}
return err;
}
DoApp::Err DoApp::acquireFaceBox() {
Err err = errNone;
NvAR_Rect output_bbox;
// get landmarks in original image resolution coordinate space
nvErr = face_ar_engine.acquireFaceBox(frame, output_bbox, 0);
if (nvErr==FaceEngine::Err::errNone) {
if (FLAG_verbose) {
printf("FaceBox: [\n");
printf("%7.1f%7.1f%7.1f%7.1f\n", output_bbox.x, output_bbox.y, output_bbox.x + output_bbox.width,
output_bbox.y + output_bbox.height);
printf("]\n");
}
if (FLAG_captureOutputs) {
writeFrameAndEstResults(frame, face_ar_engine.output_bboxes);
writeVideoAndEstResults(frame, face_ar_engine.output_bboxes);
}
#ifdef VISUALIZE
if (drawVisualization) {
DrawBBoxes(frame, &output_bbox); // This will write a frame if in offlineMode
}
#endif // VISUALIZE
}
else { // No faces found
#ifdef VISUALIZE
if (FLAG_offlineMode) {
faceDetectOutputVideo.write(frame); // This will write a frame if in offlineMode
}
#endif // !VISUALIZE
if (nvErr==FaceEngine::Err::errNoFaceDetected) err = errNoFace;
else {err = errGeneral;}
}
frameIndex++;
return err;
}
DoApp::Err DoApp::acquireFaceBoxAndLandmarks() {
Err err = errNone;
int numLandmarks = face_ar_engine.getNumLandmarks();
NvAR_Rect output_bbox;
std::vector<NvAR_Point2f> facial_landmarks(numLandmarks);
// get landmarks in original image resolution coordinate space
nvErr = face_ar_engine.acquireFaceBoxAndLandmarks(frame, facial_landmarks.data(), output_bbox, 0);
if (nvErr == FaceEngine::Err::errNone)
{
if (FLAG_verbose && face_ar_engine.appMode != FaceEngine::mode::faceDetection)
{
printf("Landmarks: [\n");
for (const auto &pt : facial_landmarks)
{
printf("%7.1f%7.1f\n", pt.x, pt.y);
}
printf("]\n");
}
if (FLAG_captureOutputs)
{
writeFrameAndEstResults(frame, face_ar_engine.output_bboxes, facial_landmarks.data());
writeVideoAndEstResults(frame, face_ar_engine.output_bboxes, facial_landmarks.data());
}
#ifdef VISUALIZE
if (drawVisualization)
{
DrawLandmarkPoints(frame, facial_landmarks.data(), numLandmarks); // Writes frame in offline mode
if (FLAG_offlineMode)
{
DrawBBoxes(frame, &output_bbox); // Writes frame in offline mode
}
}
#endif // VISUALIZE
}
else
{ // No faces found
#ifdef VISUALIZE
if (FLAG_offlineMode)
{
faceDetectOutputVideo.write(frame); // These two write frames if a face was not detected
landMarkOutputVideo.write(frame);
}
#endif // !VISUALIZE
if (nvErr == FaceEngine::Err::errNoFaceDetected)
err = errNoFace;
else
{
err = errGeneral;
}
}
frameIndex++;
return err;
}
DoApp::Err DoApp::initCamera(const char *camRes) {
if (cap.open(0)) {
if (camRes) {
int n;
n = sscanf(camRes, "%d%*[xX]%d", &inputWidth, &inputHeight);
switch (n) {
case 2:
break; // We have read both width and height
case 1:
inputHeight = inputWidth;
inputWidth = (int)(inputHeight * (4. / 3.) + .5);
break;
default:
inputHeight = 0;
inputWidth = 0;
break;
}
if (inputWidth) cap.set(CV_CAP_PROP_FRAME_WIDTH, inputWidth);
if (inputHeight) cap.set(CV_CAP_PROP_FRAME_HEIGHT, inputHeight);
inputWidth = (int)cap.get(CV_CAP_PROP_FRAME_WIDTH);
inputHeight = (int)cap.get(CV_CAP_PROP_FRAME_HEIGHT);
face_ar_engine.setInputImageWidth(inputWidth);
face_ar_engine.setInputImageHeight(inputHeight);
}
} else
return errCamera;
return errNone;
}
DoApp::Err DoApp::initOfflineMode(const char *inputFilename, const char *outputFilename) {
if (cap.open(inputFilename)) {
inputWidth = (int)cap.get(CV_CAP_PROP_FRAME_WIDTH);
inputHeight = (int)cap.get(CV_CAP_PROP_FRAME_HEIGHT);
face_ar_engine.setInputImageWidth(inputWidth);
face_ar_engine.setInputImageHeight(inputHeight);
} else {
printf("ERROR: Unable to open the input video file \"%s\" \n", inputFilename);
return Err::errVideo;
}
std::string fdOutputVideoName, fldOutputVideoName, ffOutputVideoName,
exprOutputFileName, shapeOutputFileName, poseOutputFileName, outputFilePrefix;
if (outputFilename && strlen(outputFilename) != 0) {
outputFilePrefix = outputFilename;
} else {
size_t lastindex = std::string(inputFilename).find_last_of(".");
outputFilePrefix = std::string(inputFilename).substr(0, lastindex);
}
fdOutputVideoName = outputFilePrefix + "_bbox.mp4";
fldOutputVideoName = outputFilePrefix + "_landmarks.mp4";
ffOutputVideoName = outputFilePrefix + "_faceModel.mp4";
exprOutputFileName = outputFilePrefix + "_expr.json";
shapeOutputFileName = outputFilePrefix + "_shape.json";
poseOutputFileName = outputFilePrefix + "_pose.json";
const int codec = StringToFourcc(FLAG_captureCodec);
const double fps = cap.get(CV_CAP_PROP_FPS);
const cv::Size frameSize(inputWidth, inputHeight);
if (FLAG_verbose) {
const unsigned long long frameCount = (unsigned long long)cap.get(CV_CAP_PROP_FRAME_COUNT);
printf("codec='%.4s' fps=%.8g frameCount=%llu\n", (const char*)&codec, fps, frameCount);
}
if (!faceDetectOutputVideo.open(fdOutputVideoName, codec, fps, frameSize)) {
printf("ERROR: Unable to open the output video file \"%s\" \n", fdOutputVideoName.c_str());
return Err::errGeneral;
}
if (!landMarkOutputVideo.open(fldOutputVideoName, codec, fps, frameSize)) {
printf("ERROR: Unable to open the output video file \"%s\" \n", fldOutputVideoName.c_str());
return Err::errGeneral;
}
if (!faceFittingOutputVideo.open(ffOutputVideoName, codec, fps, frameSize)) {
printf("ERROR: Unable to open the output video file \"%s\" \n", ffOutputVideoName.c_str());
return Err::errGeneral;
}
if (FLAG_debug) {
if (nullptr == (exprFile = fopen(exprOutputFileName.c_str(), "w"))) {
printf("ERROR: Unable to open the output file \"%s\" \n", exprOutputFileName.c_str());
return Err::errGeneral;
}
fprintf(exprFile, "{\n \"expression_series\":[");
if (nullptr == (shapeFile = fopen(shapeOutputFileName.c_str(), "w"))) {
printf("ERROR: Unable to open the output file \"%s\" \n", shapeOutputFileName.c_str());
return Err::errGeneral;
}
fprintf(shapeFile, "{\n \"shape_series\":[");
if (nullptr == (poseFile = fopen(poseOutputFileName.c_str(), "w"))) {
printf("ERROR: Unable to open the output file \"%s\" \n", poseOutputFileName.c_str());
return Err::errGeneral;
}
fprintf(poseFile, "{\n \"pose_series\":[");
}
return Err::errNone;
}
DoApp::Err DoApp::fitFaceModel() {
DoApp::Err doErr = errNone;
nvErr = face_ar_engine.fitFaceModel(frame);
if (FLAG_captureOutputs) {
writeFrameAndEstResults(frame, face_ar_engine.output_bboxes, face_ar_engine.getLandmarks());
writeVideoAndEstResults(frame, face_ar_engine.output_bboxes, face_ar_engine.getLandmarks());
}
frameTimer.pause();
#ifdef VISUALIZE
if (FaceEngine::Err::errNone == nvErr) { // If a face and its landmarks were detected
if (drawVisualization) {
DrawFaceMesh(frame, face_ar_engine.getFaceMesh()); // This writes a frame in offline mode ...
if (FLAG_offlineMode) { // ... as do the following two statements
DrawLandmarkPoints(frame, face_ar_engine.getLandmarks(), face_ar_engine.getNumLandmarks());
DrawBBoxes(frame, face_ar_engine.getLargestBox());
}
}
} else {
if (FLAG_offlineMode) {
faceDetectOutputVideo.write(frame); // These three will draw unannotated frames if a face was not detected
landMarkOutputVideo.write(frame);
faceFittingOutputVideo.write(frame);
}
doErr = errFaceFit;
}
#else // !VISUALIZE
if (FaceEngine::Err::errNone != nvErr)
doErr = errFaceFit;
#endif // VISUALIZE
if (FLAG_offlineMode && FLAG_debug) {
unsigned n;
const float *f;
if (frameIndex)
fprintf(exprFile, ",");
fprintf(exprFile, "\n [");
for (n = face_ar_engine.getNumExpressionCoefficients(), f = face_ar_engine.getExpressionCoefficients(); n--; ++f)
fprintf(exprFile, "%8.6f%c", *f, (n ? ',' : ']'));
if (frameIndex)
fprintf(shapeFile, ",");
fprintf(shapeFile, "\n [");
for (n = face_ar_engine.getNumShapeEigenvalues(), f = face_ar_engine.getShapeEigenvalues(); n--; ++f)
fprintf(shapeFile, "%+9.6f%c", *f, (n ? ',' : ']'));
if (frameIndex)
fprintf(poseFile, ",");
f = (const float*)face_ar_engine.getPose();
fprintf(poseFile, "\n [%+9.6f,%+9.6f,%+9.6f,%+9.6f]", f[0], f[1], f[2], f[3]);
}
frameTimer.resume();
frameIndex++;
return doErr;
}
DoApp::DoApp() {
// Make sure things are initialized properly
gApp = this;
drawVisualization = true;
showFPS = false;
captureVideo = false;
captureFrame = false;
frameTime = 0;
frameIndex = 0;
nvErr = FaceEngine::errNone;
scaleOffsetXY[0] = scaleOffsetXY[2] = 1.f;
scaleOffsetXY[1] = scaleOffsetXY[3] = 0.f;
exprFile = nullptr;
shapeFile = nullptr;
poseFile = nullptr;
}
DoApp::~DoApp() {
static const char termJsFile[] = { "\n ]\n}\n" };
if (exprFile) { fprintf(exprFile, termJsFile); fclose(exprFile); }
if (shapeFile) { fprintf(shapeFile, termJsFile); fclose(shapeFile); }
if (poseFile) { fprintf(poseFile, termJsFile); fclose(poseFile); }
}
char *g_nvARSDKPath = NULL;
int chooseGPU() {
// If the system has multiple supported GPUs then the application
// should use CUDA driver APIs or CUDA runtime APIs to enumerate
// the GPUs and select one based on the application's requirements
//Cuda device 0
return 0;
}
void DoApp::getFPS() {
const float timeConstant = 16.f;
frameTimer.stop();
float t = (float)frameTimer.elapsedTimeFloat();
if (t < 100.f) {
if (frameTime)
frameTime += (t - frameTime) * (1.f / timeConstant); // 1 pole IIR filter
else
frameTime = t;
} else { // Ludicrous time interval; reset
frameTime = 0.f; // WAKE UP
}
frameTimer.start();
}
void DoApp::drawFPS(cv::Mat &img) {
getFPS();
if (frameTime && showFPS) {
char buf[32];
snprintf(buf, sizeof(buf), "%.1f", 1. / frameTime);
cv::putText(img, buf, cv::Point(img.cols - 80, img.rows - 10), cv::FONT_HERSHEY_SIMPLEX, 1,
cv::Scalar(255, 255, 255), 1);
}
}
void DoApp::drawKalmanStatus(cv::Mat &img) {
char buf[32];
snprintf(buf, sizeof(buf), "Kalman %s", (face_ar_engine.bStabilizeFace ? "on" : "off"));
cv::putText(img, buf, cv::Point(10, img.rows - 40), cv::FONT_HERSHEY_SIMPLEX, 1, cv::Scalar(255, 255, 255), 1);
}
void DoApp::drawVideoCaptureStatus(cv::Mat &img) {
char buf[32];
snprintf(buf, sizeof(buf), "Video Capturing %s", (captureVideo ? "on" : "off"));
cv::putText(img, buf, cv::Point(10, img.rows - 70), cv::FONT_HERSHEY_SIMPLEX, 1, cv::Scalar(255, 255, 255), 1);
}
DoApp::Err DoApp::run() {
DoApp::Err doErr = errNone;
FaceEngine::Err err = face_ar_engine.initFeatureIOParams();
if (err != FaceEngine::Err::errNone ) {
return doAppErr(err);
}
while (1) {
doErr = acquireFrame();
if (frame.empty() && FLAG_offlineMode) {
// We have reached the end of the video
// so return without any error.
return DoApp::errNone;
} else if (doErr != DoApp::errNone) {
return doErr;
}
if (face_ar_engine.appMode == FaceEngine::mode::faceDetection) {
doErr = acquireFaceBox();
} else if (face_ar_engine.appMode == FaceEngine::mode::landmarkDetection) {
doErr = acquireFaceBoxAndLandmarks();
} else if (face_ar_engine.appMode == FaceEngine::mode::faceMeshGeneration) {
doErr = fitFaceModel();
}
if (DoApp::errCancel == doErr || DoApp::errVideo == doErr) return doErr;
if (!frame.empty() && !FLAG_offlineMode) {
if (drawVisualization) {
drawFPS(frame);
drawKalmanStatus(frame);
if (FLAG_captureOutputs && captureVideo) drawVideoCaptureStatus(frame);
}
cv::imshow(windowTitle, frame);
}
if (!FLAG_offlineMode) {
int n = cv::waitKey(1);
if (n >= 0) {
static const int ESC_KEY = 27;
if (n == ESC_KEY) break;
processKey(n);
}
}
}
return doErr;
}
DoApp::Err DoApp::setProxyWireframe(const char *path) {
std::ifstream file(path);
if (!file.is_open()) return errFaceModelInit;
std::string lineBuf;
while (getline(file, lineBuf)) {
std::array<uint16_t, 3> tri;
if (3 == sscanf(lineBuf.c_str(), "f %hd %hd %hd", &tri[0], &tri[1], &tri[2])) {
--tri[0]; /* Convert from 1-based to 0-based indices */
--tri[1];
--tri[2];
proxyWireframe.push_back(tri);
}
}
file.close();
return errNone;
}
const char *DoApp::errorStringFromCode(DoApp::Err code) {
struct LUTEntry {
Err code;
const char *str;
};
static const LUTEntry lut[] = {
{errNone, "no error"},
{errGeneral, "an error has occured"},
{errRun, "an error has occured while the feature is running"},
{errInitialization, "Initializing Face Engine failed"},
{errRead, "an error has occured while reading a file"},
{errEffect, "an error has occured while creating a feature"},
{errParameter, "an error has occured while setting a parameter for a feature"},
{errUnimplemented, "the feature is unimplemented"},
{errMissing, "missing input parameter"},
{errVideo, "no video source has been found"},
{errImageSize, "the image size cannot be accommodated"},
{errNotFound, "the item cannot be found"},
{errFaceModelInit, "face model initialization failed"},
{errGLFWInit, "GLFW initialization failed"},
{errGLInit, "OpenGL initialization failed"},
{errRendererInit, "renderer initialization failed"},
{errGLResource, "an OpenGL resource could not be found"},
{errGLGeneric, "an otherwise unspecified OpenGL error has occurred"},
{errFaceFit, "an error has occurred while face fitting"},
{errNoFace, "no face has been found"},
{errSDK, "an SDK error has occurred"},
{errCuda, "a CUDA error has occurred"},
{errCancel, "the user cancelled"},
{errCamera, "unable to connect to the camera"},
};
for (const LUTEntry *p = lut; p < &lut[sizeof(lut) / sizeof(lut[0])]; ++p)
if (p->code == code) return p->str;
static char msg[18];
snprintf(msg, sizeof(msg), "error #%d", code);
return msg;
}
/********************************************************************************
* main
********************************************************************************/
int main(int argc, char **argv) {
// Parse the arguments
if (0 != ParseMyArgs(argc, argv)) return -100;
DoApp app;
DoApp::Err doErr = DoApp::Err::errNone;
app.face_ar_engine.setAppMode(FaceEngine::mode(FLAG_appMode));
if (FLAG_verbose) printf("Enable temporal optimizations in detecting face and landmarks = %d\n", FLAG_temporal);
app.face_ar_engine.setFaceStabilization(FLAG_temporal);
doErr = DoApp::errFaceModelInit;
if (FLAG_modelPath.empty()) {
printf("WARNING: Model path not specified. Please set --model_path=/path/to/trt/and/face/models, "
"SDK will attempt to load the models from NVAR_MODEL_DIR environment variable, "
"please restart your application after the SDK Installation. \n");
}
if (!FLAG_faceModel.empty())
app.face_ar_engine.setFaceModel(FLAG_faceModel.c_str());
if (FLAG_offlineMode) {
if (FLAG_inFile.empty()) {
doErr = DoApp::errMissing;
printf("ERROR: %s, please specify input file using --in_file or --in \n", app.errorStringFromCode(doErr));
goto bail;
}
doErr = app.initOfflineMode(FLAG_inFile.c_str(), FLAG_outFile.c_str());
} else {
doErr = app.initCamera(FLAG_camRes.c_str());
}
BAIL_IF_ERR(doErr);
if ((FLAG_landmarkMode < 0) | (FLAG_landmarkMode > 1)){
doErr = DoApp::errParameter;
printf("ERROR: %s, Please Select Either Mode 0 or 1! \n", app.errorStringFromCode(doErr));
}
doErr = app.initFaceEngine(FLAG_modelPath.c_str(), FLAG_isNumLandmarks126, FLAG_landmarkMode);
BAIL_IF_ERR(doErr);
if (!FLAG_proxyWireframe.empty()) app.setProxyWireframe(FLAG_proxyWireframe.c_str());
doErr = app.run();
BAIL_IF_ERR(doErr);
bail:
if(doErr)
printf("ERROR: %s\n", app.errorStringFromCode(doErr));
app.stop();
return (int)doErr;
}