Problem Many image processing algorithms require an image’s gradient vectors (for example, from the output of a Sobel operator). I came across this particular one which uses gradient vector angles to find symmetrically opposing vectors. It quickly became evident that it would be CPU intensive to use the atan2 function. Moreover, atan2‘s output is an [...]
Archive for the ‘Software dev’ Category
10 Oct
TeamCamp – Year 1
It’s been almost one full year of TeamCamp (led by our fearless leader Chris Schmitt) for me, and I have learned some invaluable lessons. Execution, execution, execution You can have a million dollar idea. If it doesn’t leave your head, it’s worth nothing. It’s that simple. Like many people, I had the misconception that they [...]
13 Sep
Image Processing with Quartz Composer
I was certain to find on the internet many people, and their respective blogs, performing image processing with Apple‘s Quartz Composer. Quartz Composer is a great tool for creating stunning visual effects with Core Image, visually programming. One does not write code,but rather draws it by dragging and dropping boxes and connections between boxes. It’s [...]
