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Raster to Vector Conversion. Ioana Ciobanu János Farkas Pawel Kulinski Arpád Szövérdfi SSIP Timisoara 2003. Introduction. Raster to vector conversion Starting from a reasonably complex drawing saved in raster format, decompose it in the composite vectors from which it was formed.

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raster to vector conversion

Raster to Vector Conversion

Ioana Ciobanu

János Farkas

Pawel Kulinski

Arpád Szövérdfi

SSIP Timisoara 2003

introduction
Introduction

Raster to vector conversion

  • Starting from a reasonably complex drawing saved in raster format, decompose it in the composite vectors from which it was formed.
  • Input: raster image.
  • Output: vector description.
steps
Steps
  • Binarization
  • Vectorization
      • points
      • lines
      • triangles
      • rectangles
  • Further development
steps4
Steps
  • Binarization
  • Vectorization
      • points
      • lines
      • triangles
      • rectangles
  • Further development
binarization7
Binarization

Distance-map

steps9
Steps
  • Binarization
  • Vectorization
      • points
      • lines
      • triangles
      • rectangles
  • Further development
vectorisation
Vectorisation

The input binary image

vectorisation11
Vectorisation

Finding ends

0 0 0

0 1 1

0 0 0

vectorisation12
Vectorisation

Removing lines

vectorisation13
Vectorisation

Finding 90° corners

0 0 1

0 1 0

0 0 1

vectorisation14
Vectorisation

Finding and removing rectangles

vectorisation15
Vectorisation

Finding othercorners

0 0 1

0 1 1

0 0 0

vectorisation16
Vectorisation

Finding and removing triangles

vectorisation17
Vectorisation

The remaining forms: circles and arcs

vectorisation18
Vectorisation

The output vectors

steps19
Steps
  • Binarization
  • Vectorization
      • points
      • lines
      • triangles
      • rectangles
  • Further development
further development
Further development
  • Circles
  • Polylines
  • Curves