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Users Manual Area Scan Cameras SVSGigE
Page 60
Users Manual –evo1050, evo2050, evo2150, evo4050, evo4070, evo8050 and evo12040
© SVS-VISTEK GmbH
13.3.1
Comments on camera temperature
There is no need to worry because camera has been tested at higher temperature
than specified (40 C°).
13.4
Comments on COLOR Version
If you have purchased a COLOR version (e.g. evoZZZCFLGEC) of this camera, please
note the following:
In all electrical terms the camera is identical to the black and white versions.
The camera uses a CCD which has a color mosaic filter. This filter is called “Bayer” fil-
ter named after the person who invented it. It has a pattern on the lines which alter-
nates as follows:
E.g.: First line: RGRGRG ... and so on. (R = RED, B = BLUE, G = GREEN)
Second line: GBGBGB ... and so on.
Please note that about half of the pixels are green, a quarter red and a quarter blue.
This is due to the maximum sensitivity of the human eye at about 550 nm (green).
Note that the green pixel in the “red” line has different sensitivity than the
green pixel in the “blue” line.
Because this camera is a single chip camera it is necessary to use an algorithm which
interpolates those colors which are “not known” by the specific pixel. E.g. the red pixel
does not know its green and blue components.
This means that the performance of the image depends on the software used.
Please be aware that it is not possible to incorporate the algorithm into the camera so
easily. Unlike NTSC/PAL cameras there is no hardware chip available which can do
that for such large images. The user has the advantage to alter the colors depending
on his needs. Thus the color image must be processed in the PC.
We offer several algorithms in the SVCapture program which influence display rate
and image quality. However a color source code is available on request for those who
want to write an application.
We offer a complete set for a system setup containing camera, cable, power supply,
and software to help solving your applications.
Note that you can disable the color in the SVCapture program. Color pro-
cessing is not done inside the camera but in the PC. So some CPU power is
consumed.
If you have questions do not hesitate to contact us or your local dealer.