TexHouse Plain comparisons of 3D printing and maker tools

How to clean drawing outlines for architectural drafters

A practical guide for architectural drafters to clean drawing outlines from images, with steps and tools that can help trace and refine shapes.

By TexHouse ยท

TexHouse is published by the makers of LunarWerx 3D Print, Vector3D and MeshyDL, which are compared here alongside other tools.

Cleaning drawing outlines means turning a scanned or bitmap drawing into cleaner vector shapes. The process is to trace the picture, adjust curve details, remove unwanted shapes, compare the result with the source, and export the finished outline for the next stage of the work.

OptionWhat it doesFee
VectorMagik desktopTraces a picture into vector shapes using its own engine. [1] Saves the result as SVG, PDF, EPS, AI, DXF, EMF or PNG. [1]Free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0). [1]
VectorMagik browserRuns in the web browser using the same engine. [1] Saves the result as SVG, PDF, EPS, AI, DXF, EMF or PNG. [1]Free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0). [1]
VectorMagik command lineA command-line version does the same work without a window and lets an AI assistant trace pictures on your computer. [1]Free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0). [1]

What you need before you start

Have the source drawing as a clean bitmap, scan or photo, because the outline depends on the picture being traced. Straighten the image first so walls and edges run true, and crop the area that matters so empty page space is not included. Keep a copy of the original so the cleaned outline can be compared against it before export.

Know what the outline will be used for, because the export format and curve detail need to match the next step. Have a vector viewer ready to open the result, and have a way to compare the new outline with the original drawing side by side. A note of the intended scale and line use can help keep the cleaned drawing consistent.

Step by step

  1. Bring in the bitmap. Load the scanned or photographed drawing so the outline appears as the source image.
  1. Straighten and crop. Rotate the image so horizontal lines are level and vertical lines are plumb, then crop to the drawing limits so the sheet edges are not part of the tracing.
  1. Trace the picture. Turn the bitmap into vector shapes so the outline can be worked on as shapes instead of only as an image.
  1. Simplify the curves. Reduce unnecessary curve pieces so the outline keeps the intended shape without following every small mark from the scan.
  1. Remove unwanted parts. Delete stray shapes such as backgrounds or extra marks, and combine areas that should represent one shade or shape.
  1. Fix the nodes. Adjust curve points where the outline needs correction, and round corners where the drawing calls for curved joins.
  1. Compare with the original. Place the vector beside the bitmap or switch between them to find places where the outline changed from the source.
  1. Limit the colour use. Reduce the number of colours when the drawing does not need small colour variations from the original image.
  1. Export for the next step. Save the cleaned outline in a format that matches the drawing workflow, then open the file to confirm it transferred correctly.

Tools that can do it

VectorMagik is made by the team that publishes this site. It traces a picture into vector shapes using its own engine. [1] You can save the result as SVG, PDF, EPS, AI, DXF, EMF or PNG. [1]

A tolerance slider merges neighbouring curve pieces, and Auto picks the largest tolerance that keeps the picture. [1] You can move or delete curve nodes and round individual corners after converting. [1] You can click shapes to delete them, such as a background, or merge two shades into one. [1] You can limit the result to between 1 and 64 colours. [1]

You can compare the vector with the bitmap side by side, or flip between them with B and V keys. [1] A version runs in the web browser using the same engine. [1] Downloads exist for Windows x64, macOS (Apple Silicon and Intel), Linux x64, plus a browser version. [1]

The product is free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0). [1] It is licensed under PolyForm Noncommercial 1.0.0. [1] It installs with a Windows installer, a portable zip, a macOS zip, a Debian/Ubuntu .deb or a Linux tar.gz, all from GitHub releases. [1]

Common mistakes to avoid

Tracing a skewed image is a mistake, because the outline can carry the distortion from the source drawing. Straighten and crop before tracing.

Over-simplifying curves is another error. Reducing too much detail can change corners and curved sections, so check the cleaned outline against the original.

Leaving scan noise in the source is a mistake. Dust, marks and shadows can become extra shapes that need removing later. Clean the source where possible or remove unwanted shapes after tracing.

Skipping comparison against the original is a common error. Small changes in the vector can affect the final drawing, so check the result before sending it onward.

Frequently asked questions

Can VectorMagik trace a scanned floor plan into an outline?

VectorMagik traces a picture into vector shapes using its own engine. [1] The result can be saved as SVG, PDF, EPS, AI, DXF, EMF or PNG. [1] The tool also lets you remove shapes such as a background or merge two shades into one by clicking shapes. [1]

Can VectorMagik clean curve points after tracing?

VectorMagik lets you move or delete curve nodes and round individual corners after converting. [1] A tolerance slider merges neighbouring curve pieces, and Auto picks the largest tolerance that keeps the picture. [1] These controls can be used when adjusting a traced outline.

Can VectorMagik compare a vector drawing with the original image?

VectorMagik lets you compare the vector with the bitmap side by side, or flip between them with B and V keys. [1] This can be used when checking whether the cleaned outline still follows the original drawing before export.

Does VectorMagik export files for drawing workflows?

VectorMagik can save results as SVG, PDF, EPS, AI, DXF, EMF or PNG. [1] Downloads exist for Windows x64, macOS (Apple Silicon and Intel), Linux x64, plus a browser version. [1] The available format depends on the next program that needs the file.

Is VectorMagik free for business use?

VectorMagik is free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0). [1] It is licensed under PolyForm Noncommercial 1.0.0. [1] Check the licence terms when the cleaned outlines are used for business work.

Free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0). [1]

Try VectorMagik

Sources

  1. VectorMagik's own description of itself (the product of this site's publisher)

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