Securesight VL1 Specifiche Scaricare il pdf (Pagina 47)

©Securesight 2009 E&OE Issue 1.0

Page No. 46

Digital photo resolution is based on 72 dots per inch (dpi). The first

photo above is 800 x 600 pixels in size (0.5Mp) and would therefore be

just over 11 inches wide if printed without any adjustment. The second

is picture of the same scene is 2048 x 1536 pixels (3Mp), nearly 2.5 times

the size.

Although both photos are of the same scene, the second has considerably

more pixels, in fact over 6.5 times more and hence offers much higher

resolution, allowing you to see more detail in the picture.

If we scale the lead figure in both photo and compare with a video still it

is easy to see that more pixels gives more resolution and better

recognition.

Video 320x240 Photo 800x600 0.5Mp Photo 2048x1536 3Mp

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Securesight VL1 Specifiche Pagina 47