ReUseX::vision::osd Namespace Reference

Classes
class	CvxText
	FreeType-based text renderer for OpenCV images. More...
struct	LayoutBox
	Axis-aligned 2-D bounding box used internally by the label layout solver. More...
struct	TextSize
	Measured bounding box of a rendered text string. More...
struct	LayoutResult
	Final placement result for a single label. More...
struct	LayoutConfig
	Tunable parameters controlling the label placement algorithm. More...
class	FlatUniformGrid
	Compact spatial hash-grid for fast overlap queries during layout. More...
class	LabelLayoutSolver
	Greedy iterative label placement solver. More...

Functions
void	drawBaseInfoGeometry (cv::Mat &img, const common::object::DetectionBox &box, const cv::Scalar &color, int thickness)
	Draw the base detection rectangle and label background for a single box.
void	drawPositionRectGeometry (cv::Mat &img, const common::object::DetectionBox &box, const cv::Scalar &color, int thickness)
	Draw a dashed or solid rectangle indicating a position ROI.
void	drawPoseSkeleton (cv::Mat &img, const common::object::DetectionBox &box, int thickness)
	Draw pose skeleton connections between keypoints.
void	drawObbBox (cv::Mat &img, const common::object::DetectionBox &box, int thickness)
	Draw an oriented bounding box as a rotated rectangle.
void	drawSegmentationMask (cv::Mat &img, const common::object::DetectionBox &box)
	Overlay a semi-transparent segmentation mask onto the image.
void	drawTrackTrace (cv::Mat &img, const common::object::DetectionBox &box, int font_size)
	Draw the tracking trajectory trace for a tracked object.
void	drawTrackHistoryPose (cv::Mat &img, const common::object::DetectionBox &box, int thickness)
	Draw historical pose keypoints from previous frames.
void	drawDepth (cv::Mat &img, const common::object::DetectionBox &box)
	Overlay a depth map as a colour-mapped image blended with the input.
void	drawPolygon (cv::Mat &img, const std::vector< std::tuple< float, float > > &points, const cv::Scalar &color, int thickness)
	Draw a polygon from a list of (x, y) vertices.
void	make_labled_image (cv::Mat &img, const common::object::DetectionBoxArray &boxes)
	Minimal OSD that paints each segmentation mask with its class_id color (no text labels).
void	osd (cv::Mat &img, const common::object::DetectionBoxArray &boxes, bool osd_rect=true, double font_scale_ratio=0.04)
	Full on-screen display: draws bounding boxes, masks, poses, OBBs, tracks, and text labels with automatic non-overlapping label placement.
void	osd (cv::Mat &img, const std::unordered_map< std::string, std::vector< std::tuple< float, float > > > &points, const cv::Scalar &color=cv::Scalar(0, 255, 0), double font_scale_ratio=0.04)
	Draw polygon overlays for a map of named regions.
void	osd (cv::Mat &img, const std::string &fence_name, const std::vector< std::tuple< float, float > > &points, const cv::Scalar &color=cv::Scalar(0, 255, 0), double font_scale_ratio=0.04)
	Draw a single named polygon overlay.
void	osd (cv::Mat &img, const std::tuple< float, float > &position, const std::string &text, const cv::Scalar &color=cv::Scalar(0, 255, 0), int font_size=40)
	Render a text string at an arbitrary (x, y) position.

Function Documentation

drawBaseInfoGeometry()

void ReUseX::vision::osd::drawBaseInfoGeometry	(	cv::Mat &	img,
		const common::object::DetectionBox &	box,
		const cv::Scalar &	color,
		int	thickness )

Draw the base detection rectangle and label background for a single box.

Parameters

img	Image to draw on (modified in-place).
box	Detection box providing coordinates and type.
color	BGR color for the rectangle.
thickness	Line thickness in pixels.

drawDepth()

void ReUseX::vision::osd::drawDepth	(	cv::Mat &	img,
		const common::object::DetectionBox &	box )

Overlay a depth map as a colour-mapped image blended with the input.

Parameters

img	Image to draw on (modified in-place).
box	Detection box with depth data.

drawObbBox()

void ReUseX::vision::osd::drawObbBox	(	cv::Mat &	img,
		const common::object::DetectionBox &	box,
		int	thickness )

Draw an oriented bounding box as a rotated rectangle.

Parameters

img	Image to draw on (modified in-place).
box	Detection box with OBB data.
thickness	Line thickness in pixels.

drawPolygon()

void ReUseX::vision::osd::drawPolygon	(	cv::Mat &	img,
		const std::vector< std::tuple< float, float > > &	points,
		const cv::Scalar &	color,
		int	thickness )

Draw a polygon from a list of (x, y) vertices.

Parameters

img	Image to draw on (modified in-place).
points	Ordered list of (x, y) vertices.
color	BGR line color.
thickness	Line thickness in pixels.

drawPoseSkeleton()

void ReUseX::vision::osd::drawPoseSkeleton	(	cv::Mat &	img,
		const common::object::DetectionBox &	box,
		int	thickness )

Draw pose skeleton connections between keypoints.

Supports both COCO 17-keypoint and Hand 21-keypoint formats.

Parameters

img	Image to draw on (modified in-place).
box	Detection box with pose data.
thickness	Line thickness in pixels.

drawPositionRectGeometry()

void ReUseX::vision::osd::drawPositionRectGeometry	(	cv::Mat &	img,
		const common::object::DetectionBox &	box,
		const cv::Scalar &	color,
		int	thickness )

Draw a dashed or solid rectangle indicating a position ROI.

Parameters

img	Image to draw on (modified in-place).
box	Detection box providing coordinates.
color	BGR color for the rectangle.
thickness	Line thickness in pixels.

drawSegmentationMask()

void ReUseX::vision::osd::drawSegmentationMask	(	cv::Mat &	img,
		const common::object::DetectionBox &	box )

Overlay a semi-transparent segmentation mask onto the image.

Parameters

img	Image to draw on (modified in-place).
box	Detection box with segmentation mask.

drawTrackHistoryPose()

void ReUseX::vision::osd::drawTrackHistoryPose	(	cv::Mat &	img,
		const common::object::DetectionBox &	box,
		int	thickness )

Draw historical pose keypoints from previous frames.

Parameters

img	Image to draw on (modified in-place).
box	Detection box with track history pose data.
thickness	Line thickness in pixels.

drawTrackTrace()

void ReUseX::vision::osd::drawTrackTrace	(	cv::Mat &	img,
		const common::object::DetectionBox &	box,
		int	font_size )

Draw the tracking trajectory trace for a tracked object.

Parameters

img	Image to draw on (modified in-place).
box	Detection box with track data.
font_size	Font size used for the track ID label.

make_labled_image()

void ReUseX::vision::osd::make_labled_image	(	cv::Mat &	img,
		const common::object::DetectionBoxArray &	boxes )

Minimal OSD that paints each segmentation mask with its class_id color (no text labels).

Parameters

img	Image to draw on (modified in-place).
boxes	Detection results to visualize.

osd() [1/4]

void ReUseX::vision::osd::osd	(	cv::Mat &	img,
		const common::object::DetectionBoxArray &	boxes,
		bool	osd_rect = true,
		double	font_scale_ratio = 0.04 )

Full on-screen display: draws bounding boxes, masks, poses, OBBs, tracks, and text labels with automatic non-overlapping label placement.

Parameters

img	Image to draw on (modified in-place).
boxes	Detection results to visualize.
osd_rect	When true, draws bounding rectangles and text labels.
font_scale_ratio	Fraction of the shorter image dimension used to determine the base font size (default 0.04).

References osd().

Referenced by osd(), osd(), osd(), and osd().

osd() [2/4]

void ReUseX::vision::osd::osd	(	cv::Mat &	img,
		const std::string &	fence_name,
		const std::vector< std::tuple< float, float > > &	points,
		const cv::Scalar &	color = cv::Scalar(0, 255, 0),
		double	font_scale_ratio = 0.04 )

Draw a single named polygon overlay.

Parameters

img	Image to draw on (modified in-place).
fence_name	Label text drawn at the polygon centroid.
points	Polygon vertices as (x, y) pairs.
color	BGR line and label color.
font_scale_ratio	Base font size ratio.

References osd().

osd() [3/4]

void ReUseX::vision::osd::osd	(	cv::Mat &	img,
		const std::tuple< float, float > &	position,
		const std::string &	text,
		const cv::Scalar &	color = cv::Scalar(0, 255, 0),
		int	font_size = 40 )

Render a text string at an arbitrary (x, y) position.

Parameters

img	Image to draw on (modified in-place).
position	(x, y) drawing origin.
text	UTF-8 string to render.
color	BGR text color.
font_size	Font size in pixels.

References osd().

osd() [4/4]

void ReUseX::vision::osd::osd	(	cv::Mat &	img,
		const std::unordered_map< std::string, std::vector< std::tuple< float, float > > > &	points,
		const cv::Scalar &	color = cv::Scalar(0, 255, 0),
		double	font_scale_ratio = 0.04 )

Draw polygon overlays for a map of named regions.

Parameters

img	Image to draw on (modified in-place).
points	Map of region name → polygon vertices.
color	BGR line and label color.
font_scale_ratio	Base font size ratio.

References osd().