Find the Center of the Pixel Traces

With the help of polylines, raster images can be vectorized along the center of pixel traces. After setting the polylines, the recognition of circles or splines follows. This method is suitable for most construction plans.

Graphic: Vectorization of a circle

Graphic: PDF file suitable for a vectorization along the center of the pixel traces

When vectorizing, "Find the Center of the Pixel Traces“ provides poor results for filled areas in raster images. In this case, a line is drawn through the center of the pixel area as shown below.

Graphic: Incorrect vectorization of a pixel area

Graphic: Correct vectorization of a pixel trace

Find the Center of the Pixel Traces and the Outline of the Pixel Areas

With this option, the pixel areas are converted into pixel outlines as a first step. Usually a maximum of 3 pixels remain as the pixel outline. The thickness of the outline can be specified under “Expert Settings”. After doing so, lines get drawn along the center of the pixel traces and smoothed automatically.

Figure: Center of the the pixel traces and the outline of the pixel area

Graphic: PDF file suitable for a vectorization with contourization

Figure: Contourization of a pixel area

Find the Outlines of the Pixel Areas

When selecting this option, the outlines of the pixel traces and areas will be converted along the boundary line and smoothed automatically.

Graphic: Vectorization of the outlines of pixel areas and traces

Graphic: PDF file suitable for a vectorization along the outlines