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Whats new in broadcast test and measurement

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The test and measurement product category continues to expand as the broadcast business itself diversifies. Notable recent developments include higher resolution displays and a gradually increasing number of analysers which, having detected a fault, endeavour to fix it. No sign at NAB 2011 of any tablet-based test and measurement equipment but perh...

Submitted by Bob Pank#

Published 01 July 2011

A little bit over the top

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Vertical disparities in 3D stereoscopic images have several causes: principally they would be due to one camera being mounted such that its optical axis is higher than the other. Effectively, one eye could be seeing more over the top of objects than the other. The vertical registration is impaired and will cause headaches for any viewers as their e...

Submitted by Bob Pank#

Published 01 June 2011

Getting the 3D words right

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Captions and sub-titling in 3D is not so easy as in 2D. The words cannot simply be superimposed over 3D content. They need to be accurately positioned in the depth plane otherwise they can create visual confusion and break the whole 3D illusion. For instance, consider a street lamp-post on the right in the foreground and in front of the screen plan...

Submitted by Bob Pank#

Published 01 May 2011

Eyeballing 3D errors

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Standard-issue human eyeballs are very adaptive and clever. Of course it’s the massively powerful image processing in the visual cortex of the brain that really allows us to resolve 3D images. Stereographers have been very practised over the years in achieving good camera set-up with only simple tools. The most common test uses a picture monitor sh...

Submitted by Bob Pank#

Published 01 March 2011

Not so Good Vibrations

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When shooting with ordinary 2D, you can almost do what you like with camera dynamics. If you pan wildly from side to side or up and down, what you see through the viewfinder is what you will actually get. If there is going to be some camera shake or vibration, you can opt to switch in a stabiliser in the camera or the lens system. In 3D these are d...

Submitted by Bob Pank#

Published 01 November 2010

tv-bay IBC2010 double takes

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Tv-bay Double Takes..!Acquisition For-A VFC-7000 Camera HD Variable Frame Rate CameraASA1800 Sensitivity, Native 720x1280 resolution with inbuilt up-convert to 1920x1080 and will output at 50 or 59.94 frame rates. 120 - 700 Frames per second recording speed. Two HD-SDI outputs enabling live and recordings to be viewed simultaneously. Standard onboa...

Submitted by Bob Pank#

Published 01 November 2010

More than meets the eye

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Synchronisation is not really a problem using two professional cameras. You just loop through your reference (black) to each and you are all done. In the old days, (well not that long ago), you had to worry about PAL SCH and accurate sync matching. Today, that complication does not matter because all digital inputs adjust for slight timing errors....

Submitted by Bob Pank#

Published 01 October 2010

3d Technical

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In June there were two major events for those interested in 3D TV technologies. There has been the one day “3D Masters” at BAFTA on the 22nd in London’s Piccadilly . Earlier in the month we had the Dimension 3 Expo in Paris over 3 days from 1st to the 3rd. The 3D Masters in London was packed in a single very busy day. This comprised of well managed...

Submitted by Bob Pank#

Published 01 August 2010

Why do poorly composed 3D stereoscopic images give headac...

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The brain is used to being able to “fuse” the two separate views of the world seen from each eye into a 3D perceived scene. However we have a closed-loop system and the eye muscles constantly pull convergence and focus depending on the region of interest. When presented with two separate image streams originating from the left and right camera syst...

Submitted by Bob Pank#

Published 01 June 2010