ImageDraw.jl Documentation

A drawing package for JuliaImages

ImageDraw.jl Documentation

Introduction
Basic usage

Function References

Methods

Introduction

ImageDraw supports basic drawing on Images. You can draw points, lines, circles, ellipse and paths.

Basic usage

Let's start with a drawing a circle

using TestImages, ImageDraw, ColorVectorSpace
img = testimage("lighthouse")

# Detect edges at different scales by adjusting the `spatial_scale` parameter.
draw!(img, Ellipse(CirclePointRadius(350,200,100)))

When displayed, these three images look like this:

Drawing a circle with a thickness

using TestImages, ImageDraw, ColorVectorSpace
img = testimage("lighthouse")

# With keyword argument fill = false, circle with given thickness is computed
draw!(img, Ellipse(CirclePointRadius(350, 200, 100; thickness = 75, fill = false)))

Drawing a Rectangle.

using TestImages, ImageDraw, ImageCore, ImageShow
using FileIO # hide
img = testimage("lighthouse")

img_example_stage1 = draw!(img, Polygon(RectanglePoints(Point(10, 10), Point(100, 100))), RGB{N0f8}(1))
img_example_stage2 = draw!(img_example_stage1, Polygon(RectanglePoints(CartesianIndex(110, 10), CartesianIndex(200, 200))), RGB{N0f8}(1))
img_example_stage3 = draw!(img_example_stage2, Polygon(RectanglePoints(220, 10, 300, 300)), RGB{N0f8}(1))

Drawing a Cross.

using TestImages, ImageDraw, ColorVectorSpace, ImageCore
img = testimage("lighthouse");

draw!(img, Cross(Point(200,150), 50), RGB{N0f8}(1))