https://github.com/lingdong-/linedraw

Convert images to vectorized line drawings for plotters.
https://github.com/lingdong-/linedraw

artwork convert-images drawing plotter

Last synced: about 9 hours ago
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Convert images to vectorized line drawings for plotters.

• Host: GitHub
• URL: https://github.com/lingdong-/linedraw
• Owner: LingDong-
• License: mit
• Created: 2017-03-31T00:18:34.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2023-07-22T09:07:03.000Z (over 1 year ago)
• Last Synced: 2024-10-30T20:53:56.334Z (3 months ago)
• Topics: artwork, convert-images, drawing, plotter
• Language: Python
• Size: 2.55 MB
• Stars: 766
• Watchers: 25
• Forks: 105
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# linedraw

Convert images to vectorized line drawings for plotters.

![Alt text](./screenshots/1.png?raw=true "")

- Exports polyline-only svg file with optimized stroke order for plotters;

- Sketchy style powered by Perlin noise;

- Contour-only or hatch-only modes.

## Dependencies

Python 2 or 3, PIL/Pillow, numpy, OpenCV (Optional for better performance)

## Usage

Convert an image to line drawing and export .SVG format:

```shell

$ python linedraw.py -i input.jpg -o output.svg

```

Command specs:

```

usage: linedraw.py [-h] [-i [INPUT_PATH]] [-o [OUTPUT_PATH]] [-b] [-nc] [-nh]

                   [--no_cv] [--hatch_size [HATCH_SIZE]]

                   [--contour_simplify [CONTOUR_SIMPLIFY]]

Convert image to vectorized line drawing for plotters.

optional arguments:

  -h, --help            show this help message and exit

  -i [INPUT_PATH], --input [INPUT_PATH]

                        Input path

  -o [OUTPUT_PATH], --output [OUTPUT_PATH]

                        Output path.

  -b, --show_bitmap     Display bitmap preview.

  -nc, --no_contour     Don't draw contours.

  -nh, --no_hatch       Disable hatching.

  --no_cv               Don't use openCV.

  --hatch_size [HATCH_SIZE]

                        Patch size of hatches. eg. 8, 16, 32

  --contour_simplify [CONTOUR_SIMPLIFY]

                        Level of contour simplification. eg. 1, 2, 3

```

Python:

```python

import linedraw

lines = linedraw.sketch("path/to/img.jpg")  # return list of polylines, eg.

                                            # [[(x,y),(x,y),(x,y)],[(x,y),(x,y),...],...]

                                            

linedraw.visualize(lines)                   # simulates plotter behavior

                                            # draw the lines in order using turtle graphics.

```