Blake CCTV 3 Posted August 23, 2011 Does anyone know how many pixels per inch or cm that an image needs to consist of to be defined as identification recognition detection and crowd monitoring. I know what they are for analogue cameras but not megapixel cameras. Thank in advance Richard Share this post Link to post Share on other sites
ak357 0 Posted August 23, 2011 Does anyone know how many pixels per inch or cm that an image needs to consist of to be defined as identification recognition detection and crowd monitoring.I know what they are for analogue cameras but not megapixel cameras. Thank in advance Richard Do u think they are different ? and if its different Why ? Share this post Link to post Share on other sites
Blake CCTV 3 Posted August 23, 2011 Sorry I didn't make it clear on the last part of my post when I said that I know what the definitions are for analogue I meant that this is defined by the percentage of the screen that the person occupies but obviously with megapixel cameras the subject can be a lot smaller than an analogue picture but can be zoomed into a certain amount before the quality is affected So its not as simple as just measuring the percentage of the screen that is occupied by the subject. Share this post Link to post Share on other sites
