Motion is easy to see

In this image I am visualizing where the perfect centerline is unclear by motion. I generated several centerlines for the same arteries from multiple starting points. The places you see moving are where the centerline algorithm was unsure where to put the centerline and drew different centerlines based on the starting point. The motion in the image makes it clear to the eye where the centerline is ambiguous. Making your data move is a great way to see what's going on.
Centers of the same arteries, moving centerlines are where the algorithm is less sure
3D brain arteries

Comments

Post a Comment

Popular posts from this blog

Most efficient ways to build fitness

Some of the most efficient ways to exercise are weight lifting about 24 repetitions of each exercise to complete exhaustion and interval training like some kind of sprinting. Lower weight higher repetition weight lifting (meaning about 24 reps) done to complete muscle exhaustion (lift until you can't lift a single time more) can actually build muscle even faster low repetition with a heavier weight. A study on this is here: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0012033 N. A. Burd, et al. “Low-Load High Volume Resistance Exercise Stimulates Muscle Protein Synthesis More Than High-Load Low Volume Resistance Exercise in Young Men,” PLoS ONE, vol. 5, no. 8, p. e12033, 2010. Interval training works so well partly because you move fast turning on more fibers. Each muscle fiber in a skeletal muscle either contracts fully or not at all. You lift heavier weights or move faster by contracting/engaging more muscle fibers. So fast motions in interval training
Read more

Air pollution, diabetes, global warming - same problem

Air pollution, diabetes, global warming  and are highly related problems. Much of our air pollution comes from how much we drive everywhere. This air pollution includes CO2 driving global warming. Our traffic clogged streets and towns make it hazardous to walk so we don't walk and we put on weight and develop diabetes. I am a die hard cyclist and walk commuter and live right by a shopping center that I can see from my apartment but even I never cycle or walk there because the entire center is a parking lot and I would probably get ran over. If we rebuilt are towns and cities for walking we would walk more, reduce air pollution, global warming and diabetes all at the same time.
Read more

Same everywhere

We live about the the same everywhere, even though there are so many things to take advantage of locally. In sunny places like Utah and California I sill rarely see solar panels on houses - certainly little more than in rainier places like New England. Then we also grow green lawns in the desert, desert cities look just like rainy weather ones. Places with warm mild sunny weather rarely have more bicycle commuters (or even less) than rainy places like Portland, Oregon or cold snowy places like Madison, Wisconsin. Portland and Madison actually have more bicycle commuters than most places despite their weather to the credit of their cyclists. We eat about the same north, south, east or west. Different vegetables and fruits grow best in different places but we actually vary little in what we eat. Most of our vegetables and fruits are trucked from San Joaquin Valley, CA requiring lots of diesel. This is getting dangerous because San Joaquin is having a drought possible being made worse by
Read more