Freeware & techniques to turn a digital photo into a line drawing

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Posted By
Tony Palermo
Dec 28, 2012
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p-0’0-h the cat wrote:

QUESTION: What’s the advantage of this trace being a vector diagram?
http://www.graphicdesignforum.com/forum/showthread.php?t=41

Nice find. Here’s a quick summary of the content (as I read it):

– Vectors are paths (points+curves which is good for logos & fonts) – Rasters are pixels (boxes-on-grid which is good for photos)

– Vectors = points + math (how CAD programs work)
– Rasters = bitmaps = pixels = grid (how computer monitors & TVs work)

– Vectors (connect-the-dots) formats are eps, ai, FHx, etc. – Rasters (pixels-on-a-grid) formats are tiff, pict, jpeg, bmp, etc.

– Vectors are upward scalable and provide clean lines
– Rasters don’t scale well (interpolate) & provide jagged line edges (pixelate)

– Vector quality does not change based on size
– Raster quality is determined by size & resolution (2400 x 1600 @ 300 dpi)

– Vector curves that complete can be colored inside
– Raster boxes have a numerical value for color

– Vectors are good for sharp line graphics at any size
– Raster is good for print images & web at a small size

– Vectors are smaller and edit faster
– Rasters are bigger and edit slower

– Vectors scale up perfectly
– Rasters scale up pixelated

– Vector curves can be assigned any color (whether solid or gradient) – Raster boxes are limited in color assignments (yet are more lush)

– Illustration editors are (mostly) vector based (e.g., Inkscape, Illustrator) – Photo editors are (mostly) raster based (e.g., Irfanview, Photoshop)

See also:
http://freerangestock.com/understanding/vector_bitmap/Part1_ Bitmap.html

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TP
Tony Palermo
Dec 28, 2012

J. Clarke wrote:

QUESTION: What’s the advantage of this trace being a vector diagram?

Triple-click and you should see handles appear all over the place. You can use those to fine-tune.

Ah, indeed. I see what you mean!
http://www1.picturepush.com/photo/a/11809954/img/11809954.pn g

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