Stitch Era - stitching children's drawings

Draft

Introduction

This article will describe how to stitch scan's from children's drawings (and later maybe) give advice on what kinds of drawings are easier to stitch.

Firstly you should scan the drawing or if you don't have a scanner take a clean picture.

Dealing with a PDF scan

Our computer at work produces PDF from scans, a format you cannot import to Stitch Era. There are two paths: Either import the PDF to a drawing software or save the PDF in a picture format and directly import to Stitch Era.

Tracing with either Inkscape or Illustrator has two major drawbacks. It will create one single path with a single color. Adding color to elements then means to make cuts in selected areas of the vector path and color.

Therefore we suggest translating the PDF into a PNG image file.

• Under Windows, you can use the commercial Adobe Acrobat Pro program (I don't know if the free reader can export)
• Under Linux, either install ImageMagik or search for another solution. ImageMagik also is available for Windows and Mac.

Conversion with ImageMagik, using the command line:

convert -density 300 -quality 100 input.pdf output.png

Vectorizing a drawing in Stitch Era

If you can rely on a clean scan, you should be able to reduce the colors to the ones that the child really used.

Clip the picture

Firstly you should crop the image

• Import the picture

Select Artwork tab, then Open Image (button to the left in the menu bar)

• Select the picture

Artwork tab, then Layout> (subtab), then Crop Image

Start in the upper left corner and drag the cursor. It will crop if you release the mouse button. Hit CTL-Z if you got it wrong.

Cropping a picture in Stitch Era 17

Resize the picture

• Select the picture
• Click on Artwork -> Image

In the upper left you can change its size. e.g. the width to 90 (which means 9cm). You also can reduce vectors or even stitch areas, but its easier to reduce the picture first.

Reduce the colors

In the same toolset (Artwork->Layout) you can reduce colors. For an embroidery you should use a minimum of colors, maybe between 5 and 10. We strongly suggest to do this even if you believe that you only can see N colors. Various physical constraints from paper and drawing plus the scanning will actually give you lots of colors. E.g. in picture below, there are several shades of green due to different pressure, overlays, etc.

• For the following drawing I counted the colors (5) plus white background: 6 colors
• Enter the number and if you are happy with the result click Accept.

Reduce colors with Stitch Era 17

Too many colors is better than not enough since you always can merge later. Compare the two following pictures. The 6 color solution is not good since it merged dark blue with black. The 7 color solution does have blue. You later can merge the two greens.

Good 7 color solution - blue top is there

Bad 6 color solution - Blue top is missing (merged with black)

We also should have cropped the ice cream picture a bit. But the lines to the right won't be vectorized or else could easily be removed ...

Finally, save the file now and maybe create a backup copy.

Create a vector image

Now should create a vector image. In theory you could directly digitize pictures but this only works with a given kind, e.g. portrait with strong contrasts.

Select Artwork -> Image tab

• Decide if you want to reduce holes. E.g. set holes to 10.

• Click on Filter (not needed to reduce colors since we already did that, but we need to preprocess the picture). Make sure that white is selected as transparent color if white is only used in the background. If the child did use white that must be stitched then deselect.

• Vectorize using the standard settings first. Hit the Vectorize Icon. If you want to simplify the result a bit, try setting sharpness to a higher value.

Vectorizing takes some time. Watch the progress bar in the lower left before you think that the program is stuck.

• Then in the right picture panel, select "vectorized" tab if necessary.

• If you are happy with the result click Return . Else read more in the Stitch Era - digitizing complex bitmap images tutorial

Stich Era Vectorizer.

The following picture shows a design where we merged two greens and did not keep white as background (to be eliminated). We easily can remove the "outer" white.

Stich Era Vectorizer. 2 colors merged. No background color since we want to keep the white ice cream part

Unless you want to stitch a badge-like design remove the background (outer white). Drag it out before killing in order to make sure that it is not connected to some "inner" white that you want to stitch. If it was connected then, CTRL-Z back into position. Then, you should learn how to cut vectors (read Stitch Era - vector graphics).

Stich Era Vectorizer. Do not forget to remove and to kill the useless white background.

Auto digitize

• Save the file, and create a backup copy
• Select all, click in an empty space, then hit CTRL-A

• Select embroidery tab and then hit Art to Stitch

For a picture like this one you could lower the density of both patterns and satin stitches to 4mm to make it less heavy to wear. This can be fixed in the advanced settings of the Art-to-Stich (intelligent) dialog.

If you have a multi-needle machine we suggest ticking "Cut after stitch sections" in the advanced settings

Stich Era Vectorizer (Art-to-Stitch Intelligent)

For more information about digitizing, read the other Stitch Era tutorials.

Repairing

You also should learn how to trouble shoot, in particular how to fix broken direction lines.

Open the object manager and fix one by one each error. Click on the object you want to fix, either in the object manager or in the error console and hit SHIFT-F6 to maximize. Consider deleting tiny sections. Do not ignore errors for large sections, since faulty sections will not be stitched !

• To try first: Select the stitch section that has problem. In the context menu (right click) that pops out over the workspace (drawing) area, select autocomplete. This will attempt to finish problematic sections, e.g. ones that have main reference or section line problems. If you stitches now a are generated, you are done.

The following picture shows a complex stitch section that extends all over and around the design. Autocomplete helped finish to stitch generation for sub-sections.

Try the autocomplete feature first

Direction line problems: delete all yellow direction lines except one. Select a yellow handle and hit the DEL key. For the one you kept, one make sure that it stretches all over the stitch section (drag the yellow handles)

View the result before you stitch

• Untick Auxiliar, tick Embroidery and it CTRL-F9 if you made any modifications
• Open the View Tab and Select 3D in Draw Mode. You can adjust quality and luminosity with the little pull out menu.

Stitch Era 3D viewer

This picture "suggested" to replace the running stitches for the "lettering" at the bottom by zigzags, which we did. Also, one can see irregularities in the wing patterns. That is a question of taste. I think that children's drawings should be irregular :)