Comments on: 3D CCTV Design from 2D Aerial Photo http://cctvdesign.online/3d-cctv-design-carpark/ CCTV Design will help you understand & improve your CCTV system quality Sat, 14 Mar 2015 14:03:24 +0000 hourly 1 https://wordpress.org/?v=4.1.41 By: Tim Norton http://cctvdesign.online/3d-cctv-design-carpark/#comment-494 Sat, 28 Jul 2012 00:53:08 +0000 http://cctvdesign.online/?p=547#comment-494 I spend a significant amount of time helping people fix their CCTV systems after they paid someone good money to install in in faith that they were getting what the needed to protect their business.

The most common issue is trying to get a camera to cover too much.
EG – a small shop wants to cover its shops shelves AND identify the person coming in the door. Reality is in most installations this is 2 or more cameras. One for ID and the other for the overview.

Another misconception is that a Mega-pixel CCTV camera will fix everything. The reality is to get double the resolution, you need 4X the number of pixels.
EG – 4CIF has 704×576 pixels (or 4SIF in some parts of the world), which is 0.4 Mega-Pixels.
Double the resolution is not 0.8 Mega-Pixels but rather 2×704 by 2×576 = 1408×1152, being 1.6 Mega-Pixels.

So to get one camera to do the job of 2, we may need to jump up 4 or 8 times the number of Megapixels.

]]> By: Abhishek http://cctvdesign.online/3d-cctv-design-carpark/#comment-493 Fri, 27 Jul 2012 14:20:37 +0000 http://cctvdesign.online/?p=547#comment-493 Tim, thanks for the share…i think most of us makes incorrect analysis while putting CCTV which renders them literally worthless in times of real need…a bit of planning and strategic advice does goes a long way to make these devices really effective…

]]>