Footage of some preliminary results obtained at UC Berkeley which were compiled for Willow Garage's One-Minute PR2 Quick Start Video Contest. The PR2 is presented with two socks. It then classifies each sock as either "inside" or "outside" and flips accordingly. Once both socks are in the proper orientation, it pairs them. Team: Ping Chuan (Ted) Wang, Stephen Miller, Mario Fritz, Trevor Darrell, Pieter Abbeel.
Our entry to the PR2 Quick Start video contest paying homage to the Strong Bad techno Flash video. Here we get a sneak peak into the secret life of robots as the PR2 starts to break it down after the last student leaves the lab only to be discovered later by the same very confused student.
Made at Georgia Tech by Hai Nguyen, Felix Hu, and Keith Manning.
CANON生產APS-H尺寸影像感應器原為EOS-1D Mark IV搭載的1,610萬像素,新開發的CMOS則為原本的7.5倍,尺寸由EOS-1D Mark IV所使用CMOS的27.9×18.6mm增加至29.2×20.2mm,尺寸大小差距並不大。新開發的CMOS感光元件,將具有輸出FullHD(1,920×1,080像素)動態影像的能力。
目前CANON在感光元件上像素最高者為EOS-1Ds Mark III與EOS 5D Mark II所搭載的35mm全片幅尺寸CMOS感測器,約有2,110萬有效像素,新型擁有1億2千萬CMOS影像感測器卻只擁有APS-H 尺寸大小,開啟影像新的次元,未來大型輸出產品便非難事,在相機規格上也將有顯著的提升。
The Sony SLT A55's sensor is APS-C size and therefore you can't quite create the same depth of field effects as on a full-frame-camera such as the Canon EOS 5D Mark II but you still get a much shallower, more cinematic depth of field (and much better image quality) than most camcorders or any digital compact camera. The videos are screen-filling and the level of detail and smoothness are pretty much in line with other cameras of this level. In low light the footage becomes grainy but again, this is not worse than on any of the competitors. There is also no discernible quality difference between the MPEG-4 and AVCHD formats.
Continuous is the default AF mode when shooting video (single is not available). It is generally pretty good but there are some occasional focus shifts and the AF can, despite the A55's translucent mirror, struggle to follow fast-moving subjects. As sometimes the focus motor can also be heard in the audio recording we would recommend switching the AF off and focus manually as an alternative.
Talking of audio, the A55 has built in stereo microphones but with the option to add better external stereo mics. We did not have a chance to test the latter but experience tells us that an external microphone a very useful accessory if you plan on recording 'serious' video with sound. The built-in mic is pretty sensitive and though the sound quality is perfectly acceptable it's not directional enough, and tends to pick up camera operation noises.
Like pretty much all other video-capable large-sensor cameras the SLT-A55 suffers from distortion caused by its rolling shutter. The readout of the sensor means horizontal lines of the image are scanned, one after another, rather than the whole scene being grabbed in one go. The upshot is that verticals can be skewed if the camera (or the subject) moves too fast - the top of the image has been recorded earlier than the bottom, so vertical lines can be rendered as diagonals. The effect is clearly noticeable on the A55 but you have to pan quickly to make it too intrusive. The camera is fairly average in this respect but we have seen a few models which handle the problem a little better.
Overall the A55's video mode delivers good quality output that is far better than anything you'd get from a digital compact camera. The optional external microphone is a good option for more serious videographers but the lack of control and shutter speed during video recording make it less of a creative tool than some competitors. Below you'll find some examples of videos taken with the camera for you to download and draw your own conclusions.
SIGGRAPH 2010 : Computer Animation Festival Trailer:
SIGGRAPH 2010: Ovulation Animation:
SIGGRAPH 2010 has accepted Ovulation, an animation by Nucleus into its juried Computer Animation Festival. This year's nominee is Ovulation, showing follicle development within the ovary, the movement of the fimbriae over the ovulation site before ovulation, the bursting of the egg from the ovary in a rush of fluid, delicate quality of the ciliated fimbriae and its movement to pick up the egg after ovulation, peristalsis of the fallopian tube to move the egg toward the uterus. ANS00378
Written by Mary Beth Clough Directed by Thomas Brown Animated by Thomas Brown and Stephen Boyd Music composed by Daniel Brown