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When a camera captures a moving object, the sharpness of the frozen image will depend on the technology used.
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You are Here:- Home >> Products >> Network Cameras >> Scan Technology
Progressive scan vs. Interlace and 2CIF
When a camera captures a moving object, the sharpness of the frozen image will depend on the technology used. The following example compares JPEG images, captured by three different cameras using: progressive scan, interlaced scan and 2CIF. Please note the following:
  • All image systems produce a clear image of the background
  • Jagged edges from motion with interlaced scan
  • Motion blur caused by the lack of resolution in the 2CIF sample
  • Only with progressive scan, it is possible to identify the driver
Progressive Scan

Used in Axis Network Cameras such as 210, 211, 211A and 221

Interlaced Scan

Used in Analogue CCTV cameras

2CIF

Used in Digital Video Recorders

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Image Details
Note: In these examples, all cameras used the same lens type and the car was driven at 20 km/h (15 mph) using cruise control.
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