Crate rten_imageproc

Provides 2D geometry and image processing functions.

This includes:

• 2D vectors and related math
• 2D shapes and associated algorithms: Point, Line, Rect, RotatedRect, Polygon
• Rudimentary drawing functions
• Algorithms for finding the contours of connected components in an image (find_contours)
• Algorithms for simplifying polygons and finding various kinds of shape that contain a polygon: simplify_polygon, min_area_rect, convex_hull

Structs

• FillIter
  Iterator over coordinates of pixels that fill a polygon. See Polygon::fill_iter for notes on how this iterator determines which pixels are inside the polygon.
• Line
  A bounded line segment defined by a start and end point.
• Painter
  Painter is a context for drawing into an image tensor.
• Point
  A point defined by X and Y coordinates.
• Polygon
  Polygon shape defined by a list of vertices.
• Polygons
  A collection of polygons, where each polygon is defined by a slice of points.
• Rect
  Rectangle defined by left, top, right and bottom coordinates.
• RotatedRect
  An oriented rectangle.
• Vec2

Enums

• RetrievalMode
  Specifies which contours to extract from a mask in find_contours.

Constants

• IMAGENET_MEAN
  Standard ImageNet normalization mean values, for use with normalize_image.
• IMAGENET_STD_DEV
  Standard ImageNet normalization standard deviation values, for use with normalize_image.

Traits

• BoundingRect
  Trait for shapes which have a well-defined bounding rectangle.
• Coord
  Trait for types which can be used as coordinates of shapes.

Functions

• bounding_rect
  Return the bounding rectangle of a collection of shapes.
• convex_hull
  Return the sorted subset of points from poly that form a convex hull containing poly.
• draw_line
  Draw a non-antialiased line in an image.
• draw_polygon
  Draw the outline of a non anti-aliased polygon in an image.
• fill_rect
  Fill all points inside rect with the value value.
• find_contours
  Find the contours of connected components in the binary image mask.
• min_area_rect
  Return the rotated rectangle with minimum area which contains points.
• normalize_image
  Normalize the mean and standard deviation of all pixels in an image.
• simplify_polygon
  Return a simplified version of the polygon defined by points.
• simplify_polyline
  Return a simplified version of the polyline defined by points.
• stroke_rect

Type Aliases

• LineF
• PointF
• PolygonF
• RectF
• Rgb