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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| #include "videoexporter.h" | ||
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| std::unordered_map<std::string ,int> VideoExporter::colour_hashmap{ | ||
| { "Cividis", cv::COLORMAP_CIVIDIS }, | ||
| { "Inferno", cv::COLORMAP_INFERNO }, | ||
| { "Magma", cv::COLORMAP_MAGMA }, | ||
| { "Hot", cv::COLORMAP_HOT }, | ||
| { "Bone", cv::COLORMAP_BONE }, | ||
| { "Plasma", cv::COLORMAP_PLASMA }, | ||
| { "Jet", cv::COLORMAP_JET }, | ||
| { "Rainbow", cv::COLORMAP_RAINBOW }, | ||
| { "Ocean", cv::COLORMAP_OCEAN }, | ||
| { "Viridis", cv::COLORMAP_VIRIDIS } | ||
| }; | ||
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| void VideoExporter::process() | ||
| { | ||
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| auto out_filename = QDir(output_folder).absoluteFilePath(filename); | ||
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| cv::VideoWriter writer(out_filename.toStdString(), fourcc, fps, frame_size); | ||
| QList<QString> images; | ||
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| if(export_unlabelled) | ||
| project->getImageList(images); | ||
| else | ||
| project->getLabelledImageList(images); | ||
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| if(!writer.isOpened()){ | ||
| qCritical() << "Failed to open video writer"; | ||
| } | ||
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| auto pbar = cliProgressBar(); | ||
| double progress = 0; | ||
| int i = 0; | ||
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| qInfo() << "Writing video to file:" << out_filename; | ||
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| for(auto &abs_image_path : images){ | ||
| // Read | ||
| auto image = cv::imread(abs_image_path.toStdString(), cv::IMREAD_UNCHANGED); | ||
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| int w, h; | ||
| w = image.cols; | ||
| h = image.rows; | ||
|
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| cv::Mat image_resized; | ||
| cv::resize(image, image_resized, frame_size); | ||
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| if(image_resized.elemSize() == 2){ | ||
| convert16(image_resized); | ||
| } | ||
|
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| if (image_resized.channels() == 4){ | ||
| cv::cvtColor(image_resized, image_resized, cv::COLOR_RGBA2RGB); | ||
| }else if(image_resized.channels() == 1){ | ||
| cv::applyColorMap(image_resized, image_resized, colourmap); | ||
| } | ||
|
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| if(this->display_boxes){ | ||
| QList<BoundingBox> labels; | ||
| project->getLabels(abs_image_path, labels); | ||
|
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| for(auto &label : labels){ | ||
| double x_scale = static_cast<double>(w)/image_resized.cols; | ||
| double y_scale = static_cast<double>(h)/image_resized.rows; | ||
| drawBoundingBox(image_resized, label, x_scale, y_scale, this->box_thickness); | ||
|
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| } | ||
| } | ||
|
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| writer.write(image_resized); | ||
|
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| progress = 100*static_cast<double>(i++)/images.size(); | ||
| pbar.update(progress); | ||
| pbar.print(); | ||
|
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| } | ||
|
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| writer.release(); | ||
| } | ||
|
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| void VideoExporter::drawBoundingBox(cv::Mat &source, BoundingBox box, double x_scale, double y_scale, int thickness){ | ||
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| int top_x = box.rect.x()/x_scale; | ||
| int top_y = box.rect.y()/y_scale; | ||
| double font_scale = 0.8; | ||
|
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| auto rect = cv::Rect2i(top_x, | ||
| top_y, | ||
| box.rect.width()/x_scale, | ||
| box.rect.height()/y_scale); | ||
|
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| auto colour_list = QColor::colorNames(); | ||
| QColor colour = QColor(colour_list.at(std::max(0, box.classid) % colour_list.size()) ); | ||
| cv::Scalar color(colour.red(), colour.green(), colour.blue()); | ||
|
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| cv::rectangle(source, rect, color, thickness); | ||
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| if(display_names){ | ||
| auto label_string = QString("%1").arg(box.classname).toStdString(); | ||
|
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| int baseline; | ||
| auto text_size = cv::getTextSize(label_string, cv::FONT_HERSHEY_DUPLEX, font_scale, thickness, &baseline); | ||
|
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| cv::Rect2i label_background(top_x, | ||
| top_y, | ||
| text_size.width, | ||
| text_size.height); | ||
| cv::rectangle(source, label_background, color, -1); | ||
|
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| auto text_colour = cv::Scalar(0,0,0); | ||
| if(colour.red() == 0 | ||
| && colour.green() == 0 | ||
| && colour.blue() == 0){ | ||
| text_colour = {255,255,255}; | ||
| } | ||
|
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| cv::putText(source, | ||
| label_string, | ||
| {top_x, top_y + text_size.height}, | ||
| cv::FONT_HERSHEY_DUPLEX, | ||
| this->font_scale, | ||
| text_colour, | ||
| thickness); | ||
| } | ||
| } | ||
|
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| void VideoExporter::convert16(cv::Mat &source, double minval, double maxval){ | ||
|
|
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| if(minval < 0 || maxval < 0){ | ||
| cv::minMaxIdx(source, &minval, &maxval); | ||
| } | ||
|
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| double range = maxval-minval; | ||
| double scale_factor = 255.0/range; | ||
|
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| source.convertTo(source, CV_32FC1); | ||
| source -= minval; | ||
| source *= scale_factor; | ||
| source.convertTo(source, CV_8UC1); | ||
|
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| return; | ||
| } | ||
|
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| void VideoExporter::labelConfig(bool display_names, bool display_boxes, int box_thickness, double font_size){ | ||
| this->display_names = display_names; | ||
| this->display_boxes = display_boxes; | ||
| this->box_thickness = box_thickness; | ||
| this->font_scale = font_size; | ||
| } | ||
|
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| void VideoExporter::videoConfig(QString filename, QString fourcc_string, double fps, cv::Size frame_size, QString colourmap) | ||
| { | ||
| this->filename = filename; | ||
| this->fps = fps; | ||
| this->fourcc = cv::VideoWriter::fourcc(fourcc_string.at(0).toLatin1(), | ||
| fourcc_string.at(1).toLatin1(), | ||
| fourcc_string.at(2).toLatin1(), | ||
| fourcc_string.at(3).toLatin1()); | ||
| this->frame_size = frame_size; | ||
| this->colourmap = colour_hashmap[colourmap.toStdString()]; | ||
| } |
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