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Merge pull request #27659 from asmorkalov:as/interactive_empty_frames

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Skip couple of intro frames in interactive calibration tool, if VideoCapture is opened correctly
This commit is contained in:
Alexander Smorkalov
2025-08-15 09:32:14 +03:00
committed by GitHub
parent 84dc1e93c5 a0639446cc
commit c27f5a3905
1 changed files with 19 additions and 0 deletions
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apps/interactive-calibration/calibPipeline.cpp
+19
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@@ -31,6 +31,9 @@ CalibPipeline::CalibPipeline(captureParameters params) :
PipelineExitStatus CalibPipeline::start(std::vector<cv::Ptr<FrameProcessor> > processors)
{
const int allowedEmptyFrames = 5;
int emptyFrames = 0;
auto open_camera = [this] () {
if(mCaptureParams.source == Camera)
{
@@ -87,6 +90,22 @@ PipelineExitStatus CalibPipeline::start(std::vector<cv::Ptr<FrameProcessor> > pr
CV_CheckEQ(mImageSize, newSize, "Camera image size changed after reopening.");
}
mCapture.retrieve(frame);
if (frame.empty()) {
emptyFrames++;
if (emptyFrames >= allowedEmptyFrames) {
CV_LOG_ERROR(NULL, "VideoCapture error: grabbed sequence of empty frames. VideoCapture is not ready or broken.");
return Finished;
}
continue;
} else {
emptyFrames = 0;
if (mImageSize.width == 0 || mImageSize.height == 0) { // looks like VideoCapture does not support required properties
mImageSize = frame.size();
}
}
if(mCaptureParams.flipVertical)
cv::flip(frame, frame, -1);