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ATV Modulator: text overlay for video and camera. Automatic font thickness adjustment

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This commit is contained in:
f4exb 2017-03-12 19:19:49 +01:00
parent b42d39108a
commit 99b79e383f
1 changed files with 10 additions and 4 deletions
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14
plugins/channeltx/modatv/atvmod.cpp
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@ -259,6 +259,10 @@ void ATVMod::pullVideo(Real& sample)
if (!colorFrame.empty()) // some frames may not come out properly if (!colorFrame.empty()) // some frames may not come out properly
{ {
if (m_showOverlayText) {
mixImageAndText(colorFrame);
}
cv::cvtColor(colorFrame, m_videoframeOriginal, CV_BGR2GRAY); cv::cvtColor(colorFrame, m_videoframeOriginal, CV_BGR2GRAY);
resizeVideo(); resizeVideo();
} }
@ -343,6 +347,10 @@ void ATVMod::pullVideo(Real& sample)
if (!colorFrame.empty()) // some frames may not come out properly if (!colorFrame.empty()) // some frames may not come out properly
{ {
if (m_showOverlayText) {
mixImageAndText(colorFrame);
}
cv::cvtColor(colorFrame, camera.m_videoframeOriginal, CV_BGR2GRAY); cv::cvtColor(colorFrame, camera.m_videoframeOriginal, CV_BGR2GRAY);
resizeCamera(); resizeCamera();
} }
@ -844,16 +852,14 @@ void ATVMod::mixImageAndText(cv::Mat& image)
{ {
int fontFace = cv::FONT_HERSHEY_PLAIN; int fontFace = cv::FONT_HERSHEY_PLAIN;
double fontScale = image.rows / 100.0; double fontScale = image.rows / 100.0;
int thickness = 3; int thickness = image.cols / 160;
int baseline=0; int baseline=0;
qDebug("ATVMod::mixImageAndText: fontScale: %f m_overlayText: %s", fontScale, m_overlayText.c_str());
cv::Size textSize = cv::getTextSize(m_overlayText, fontFace, fontScale, thickness, &baseline); cv::Size textSize = cv::getTextSize(m_overlayText, fontFace, fontScale, thickness, &baseline);
baseline += thickness; baseline += thickness;
// position the text in the top left corner // position the text in the top left corner
cv::Point textOrg(2, textSize.height+4); cv::Point textOrg(4, textSize.height+4);
// then put the text itself // then put the text itself
cv::putText(image, m_overlayText, textOrg, fontFace, fontScale, cv::Scalar::all(255*m_running.m_uniformLevel), thickness, CV_AA); cv::putText(image, m_overlayText, textOrg, fontFace, fontScale, cv::Scalar::all(255*m_running.m_uniformLevel), thickness, CV_AA);
} }