SQLsnap: short overview

Eckart ModrowUniversity of Göttingen

Goals:• adapt the ideas of BJC to German situation

(social impacts of CS for CS-beginners)• develop some necessary additions to Snap!

(SQL access, fast image processing)Example: supermarket

“Blownto Bits” (Ableson et. al.):Social impacts often result from the combination of data from different sources. Here: databases and images

1. step: barcode reader for a checkout scanner

We use a simple barcode, determine the width of the black bars, and generate an appropriate code.

2. step: smart scale for fruit

Getting width and height is simple, but what about the color?

3. step: smart scale for real fruit-images

With real images we have too much colors colorspace reduction.

Speed it up with codification.

4. step: Get data from images!

pattern recognition for car-plates

and for passport photos

New challenges require new answers!

Thank You!