cirquit
PhD student with a focus on machine learning, distributed systems and functional programming.
T(ea)rdrop
Trdrop - System Presentation
Alexander Isenko
A video analysis software
1
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Problem - Tears
Alexander Isenko
2
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Problem - FPS Drops
Alexander Isenko
3
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Solution
Alexander Isenko
- Calculate features with a single pass over multiple videos
- Create a closured interface to process and modify frames with tasks
- Automatic parallelization
4
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Main Concept - Program Design
Alexander Isenko
5
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Task Scheduler Concept
Alexander Isenko
6
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Main Loop
Alexander Isenko
7
int main(int argc, char** argv){
Config config(-1, argc, argv);
TaskScheduler scheduler(config.inputs);
FPSPreTask fpsPreT("FPS",
config.inputs.size(),
config.pixelDifference);
scheduler.addPreTask(std::make_shared<FPSPreTask>(fpsPreT));
std::vector<double> framerates;
while (scheduler.next()) {
if (fpsPreT.result.successful()) {
framerates = fpsPreT.result.getSuccess();
}
}
}Trdrop - System Presentation
Special Task - LoggerT
Alexander Isenko
8
std::vector<tostring> convertions;
LoggerTask<CSVFormatter> loggerT(
convertions,
{ "Frameindex", " " + fpsPreT.id },
config.inputNames,
config.logName
);
convertions.push_back([&](int ix){
return trdrop::util::string_format(
"%10i", scheduler.getCurrentFrameIndex());
});
convertions.push_back([&](int ix){
return trdrop::util::string_format(
"%6." + std::to_string(config.fpsPrecision) + "f", framerates[ix]);
});// class LoggerTask
public:
void process(cv::Mat & res, const size_t currentFrame, const size_t vix) {
std::vector<std::string> values;
std::transform(conversions.begin(),
conversions.end(),
std::back_inserter(values),
[&](tostring f) { return f(vix); });
(*streams[vix]) << formatter.format(values.begin(), values.end());
});
}Trdrop - System Presentation
Live Presentation & Questions?
Alexander Isenko
9
Trdrop
By cirquit
