Internal change

PiperOrigin-RevId: 477863040

mediapipe/util/annotation_renderer.cc

@@ -552,6 +552,16 @@ void AnnotationRenderer::DrawText(const RenderAnnotation& annotation) {
     origin.y += text_size.height / 2;
   }
 
+  if (text.outline_thickness() > 0.0) {
+    const int background_thickness = ClampThickness(
+        round((annotation.thickness() + 2.0 * text.outline_thickness()) *
+              scale_factor_));
+    const cv::Scalar outline_color =
+        MediapipeColorToOpenCVColor(text.outline_color());
+    cv::putText(mat_image_, text.display_text(), origin, font_face, font_scale,
+                outline_color, background_thickness, /*lineType=*/8,
+                /*bottomLeftOrigin=*/flip_text_vertically_);
+  }
   cv::putText(mat_image_, text.display_text(), origin, font_face, font_scale,
               color, thickness, /*lineType=*/8,
               /*bottomLeftOrigin=*/flip_text_vertically_);

mediapipe/util/render_data.proto

@@ -168,6 +168,12 @@ message RenderAnnotation {
     // [left, baseline] represent  [center_x, center_y].
     optional bool center_horizontally = 7 [default = false];
     optional bool center_vertically = 8 [default = false];
+
+    // Thickness of the text outline.
+    optional double outline_thickness = 11 [default = 0.0];
+
+    // Color of the text outline.
+    optional Color outline_color = 12;
   }
 
   // The RenderAnnotation can be one of the below formats.