Faber M1024, M640, M1600, M1400 user manual Acquiring an image frame

GenICam specification

Specification of the European Machine Vision Association (EMVA, www.emva.org). Defines the capabilities of any GigE Vision device.

Grab

Acquiring an image frame.

Grayscale

In image processing, the range of available brightness levels, displayed in shades of gray. In an 8-bit system, the gray scale contains values from 0 to 255. A 10-bit system has a range of 0-1023.

GVCP – GigE Vision Control Protocol

One of the core protocols of the GigE Vision specification used to control camera. GVCP uses UDP port 3956 on the camera.

GVSP – GigE Vision Stream Protocol

One of the core protocols of the GigE Vision specification used to stream images.

Host

Refers to the computer system that supports the installed frame grabber.

IP – Internet Protocol

The Internet Protocol is the method by which data is sent from one computer to another on a network or across the Internet. Each device must have an IP address to identify that device on the network or on the Internet.

LLA

Link-Local Address is a protocol providing a scheme for devices to automatically assign themselves an IP address and check for IP conflict. Used in unmanaged networks.

NIC

Network Interface Card/Controller. For the Genie products the NIC must be a Gigabit Ethernet interface to provide sufficient bandwidth.

Pixel

A contraction of "picture element". The number of pixels describes the number of digital samples taken of the analog video signal. The number of pixels per video line by the number of active video lines describes the acquisition image resolution. The binary size of each pixel (e.g., 8-bits, 16-bits, 24-bits) defines the number of gray levels or colors possible for each pixel.

PRNU

Photo-Response Non-Uniformity. For a given even illumination the difference between the minimum and maximum measured pixel values is the PRNU.

Progressive Scan Camera

The progressive scan format outputs data from the camera (the signal) in sequential order as it is scanned. The scan format produces a full frame of video in a continuous stream, rather than half the image per output sequence in standard interlaced cameras.

Random Noise

Random noise is defined as the difference in peak to peak value for any single pixel repetitively sampled, with the sensor in darkness. For digital cameras the measurement is based on at least 512 samples from any pixel.

Router

A Router device forwards packets across networks. It operates at Layer 3 of the seven-layer OSI model. Note that broadcast packets (such as GigE Vision Device Discovery message) do not cross routers.

120 • Glossary of Terms Genie Monochrome Series-GigE Vision Camera