Sfumato StitchComparison of Sfumato Stitch version 2013 and version 3.0

Crisp Details, Easier Sew-Out

Sfumato 2013 contains completely new stitch engine that generates stitches more efficiently. The main goal was to reduce number of trims, which is usually quite high on designs of this type, and also to reduce stray stitches to achieve better detail. These enhancements allow to avoid or minimize editing of design and make the actual embroidering easier.

Objectives

User Interface

User interface of Sfumato tool remains the same as in previous version to avoid learning curve. There are only two changes to interface of the new version: 1. option to define shade colors manually (right button click on the shade color box), 2. new stitch styles which result from use of the new stitch algorithms. These styles do not apply to areas with highest density, which are always filled with common plain fill (with adjustable angle). Their effect is noticable on areas of lower density.

Stitch layout styles

Styles from top to bottom are:

  1. Common Sfumato meanders
  2. Contour stitches (default)
  3. Contour stitches (higher density)
  4. Contour stitches (highest density)

First option, Meanders, produces stitch layout similar to previous Sfumato version, but with less trims and stray stitches.

Default style is Contour stitches, which produces the most efficient stitch layout. The stitches do not follow the contour on all places. Where not applicable, the meanders are used automatically.

Higher and Highest density options allow to achieve more compact coverage. This means than fabric shows through stitches less than with other options.

Trims

Each Sfumato object contains 1-5 shades of the base color (see color layers on bellow illustration). Each color layer may contain trims, which number depends on the color layout. Sfumato 2013 has enhanced identification of individual regions within the color layer, which results in about 50% less trims than in previous Sfumato, because program is now capable to re-order and connect regions within color layer in a more efficient way.

Sfumato object - color layer - shade 1 Sfumato object - color layer - shade 2 Sfumato object - color layer - shade 3 Sfumato object - color layer - shade 4 Sfumato object - color layer - shade 5

Stray Stitches

Stray stitches are connection paths running over already stitched areas or through areas that are supposed to remain empty.

Design made with Sfumato 3.0 Design made with Sfumato 3.0 - Detail - Stray Stitches Design made with Sfumato 2013 Design made with Sfumato 2013 - Detail - Reduced Stray Stitches

Version 2013 (pink pictures) reduces the stray stitches, which results in cleaner edges and consequently, a better details.

Stitch Length and Density

Stitches on areas of medium darkness are longer than in previous Sfumato, which means lower number of short stitches and lower overall stitchcount as well. Also, it means reduction of density on the most dense areas, while preserving the same amount of thread coverage.

Design made with Sfumato 3.0 - Large Number of Needle Points Design made with Sfumato 2013 - Reduced Needle Points

Density map of design made with previous Sfumato. Hot colors (orange and yellow) indicate large number of needle points and increased danger of thread breaks. Cold colors (green and blue) indicate low number of needle points. Red arrows mark places where number of needle points can be reduced.

The same places have less needle points (colder colors on density map) when design is compiled with Sfumato 2013.

User-Defined Shade Colors

New version allows both automatic (default) and user-defined shade colors. Automatic shades are generated by program everytime the basic color is changed. They are brighter and darker shades of the basic color and form a monochrome scale of shades, which is often sufficient for fill of a single Sfumato object.

User-defined shades

Automatic shades form a monochrome scale.

User-defined shades provide more freedom in color selection within a single Sfumato object. The palette of shades does not need to be monochrome and may contain any color in any order. To define your own shade colors, click right mouse button on respective shade box and select a new color from the panel that appears.

User-defined shades User-defined shades User-defined shades User-defined shades User-defined shades User-defined shades

User-defined shades allow to achieve various coloring effects.
Above example is a single Sfumato object - rectangle with rounded corners,.

Summary

Design made with Sfumato 3.0 Design made with Sfumato 2013

Test design is 16.8 cm (6.6 inches) high. Above results are from Sfumato 3.0 (left) and Sfumato 2013 (right).

Comparison Version 3.0 Version 2013
Time 67 sec. 13 sec.
Stitches 41250 36540
Trims 60 33
Average stitch length 1.8 mm 2.2 mm

New version 2013 compiles Sfumato designs faster and produces less trims (about 50%) than previous version. Design has lower stitchcount and longer short stitches. Combination of these two features results in decreased danger of thread breaks while preserving the same thread coverage.

More Tests

Design made with Sfumato 2013

Height 21.8 cm (8.6 inches), 1 basic color (5 thread shades)

Thread shades

Comparison Version 3.0 Version 2013
Time 74 sec. 44 sec.
Stitches 67350 55440
Trims 62 21
Average stitch length 2.4 mm 2.8 mm

Design made with Sfumato 2013

Height 20.8cm (8.2 inches), 1 basic color (5 thread shades)

Thread shades

Comparison Version 3.0 Version 2013
Time 67 sec. 19 sec.
Stitches 53150 42622
Trims 43 24
Average stitch length 2.1 mm 2.7 mm

Design made with Sfumato 2013 Individual Sfumato objects

Multicolored design (6 basic colors, 22 thread shades), height 16.8cm (6.6 inches).

Design contains 6 vector objects. Each object has number of shades chosen according to its size and complexity. For example, the "mouth" is a small object and required low number of shades.

Thread shades Background - 4 shades

Thread shades Face - 5 shades. The face object contains a hole for mouth object.

Thread shades Mouth - 2 shades

Thread shades Sweater - 2 shades

Thread shades Cap - 4 shades

Thread shades Jacket - 5 shades

Comparison Version 3.0 Version 2013
Time 20 sec. 10 sec.
Stitches 38600 35930
Trims 144 78
Average stitch length 1.8 mm 2.3 mm