Motion segmentation is a task essential to many video processing applications from coding and tracking to recognition and restoration. While unlike image segmentation, research progress in motion segmentation has remained slow in the past decade. One way of justifying this claim is to use “motion segmentation” as the keyword in Google Scholar search. You will [...]
Archive for January, 2009
Stalemate in Motion Segmentation?
Posted in digital video processing on January 28, 2009 | Leave a Comment »
Motion Representation and Motion Perception
Posted in digital video processing on January 27, 2009 | Leave a Comment »
A fundamental difference of video from image is that it contains motion information. That is why video is also called motion pictures and MPEG stands for Motion Pictures Expert Group. Well, if a MPEG expert explains the details of block-based video coding algorithm to a neuro-scientist, he might be questioned as soon as he speaks: [...]
Color issue in video acquisition (continuation of my previous post)
Posted in digital video processing on January 27, 2009 | Leave a Comment »
The other poorly addressed issue in video acquisition is color. Yes, we have heard about lots of technical terms such as YUV, YIQ, 4:2:0, 4:4:4 etc. Those convey little meaning in a scientist’s mind. The fact is: color is a notoriously difficult problem which we do not understand well. I once heard that at least [...]
Video Acquisition: some scientific thoughts
Posted in digital video processing on January 7, 2009 | Leave a Comment »
Raw video data have two important attributes: spatial resolution and temporal resolution. Spatial resolution refers to the total number of pixels in a frame – as sensor technology advances, we have witnessed ever-increasing spatial resolution – e.g., from standard TV to HDTV (of course 1080p is a better and more expensive option than 720p). Temporal [...]
Welcome to the wonderful world of video processing
Posted in digital video processing on January 5, 2009 | Leave a Comment »
Disney will not be a wonderful world for kids if movie or animated film were not invented. Since Roundhay Garden Scene, the world’s earliest film, by Louis Le Prince, in 1888, we have witnessed how video technology has evolved and impacted our daily lives. It took mankind less than 120 years to go from analog [...]
Order from Noise (Fluctuation)
Posted in tips on January 5, 2009 | Leave a Comment »
What is common between mind and universe? You might be surprised by the astonishingly similarity between their topology (network or neurons vs. network of galaxies) though they belong to two highly contrasting scales. If there is a grand law governing the evolution of everything including life, intelligence and cosmos, such law must be the simplest [...]
