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TM-1400 Series Progressive Scan Shutter Cameras
3.9.6 Interpolation Software
Major frame grabber manufacturers with digital capability (Camera Link, RS-644) provide color
interpolation software. Some independent image process software suppliers provide software as well.
The following table lists a few examples.
3.9.7 Color Interpolation
The Bayer pattern color filter array (CFA) consists of R, G, and B primary colors. Each pixel represents
one of three colors. In order to display or print color images, the signal has to be converted to RGB
output, which has three independent channels (outputs) and sync signals.
Color interpolation software or firmware performs the color
preprocessing by filling the missing color pixels with neighboring
pixels. It then separates the stream of data, (8-bit or 10-bit) into 3 (RGB)
data (8-bit x 3) and adds the color matrix to adjust and balance each of
the R,G, and B channels (white balance or color balance).
The image quality depends on the camera’s own pixel data (including
pixel data independency from neighboring pixels, noise and color filter),
and interpolation of the software algorithm such as 3 x 3 interpolation, 2
x 2 interpolation, color matrix, white balance capability, etc.
All AccuPiXEL color cameras are carefully designed for maximum color performance. JAI PULNiX
strongly suggests that you use digital output for the best performance.
Some software is used on board (FPGA or DSP) to perform the interpolation. Other software simply
uses the host computer’s memory and CPU. The process speed may vary depending on the architecture
and speed of the computer.
TABLE 7. Frame Grabber Interpolation Software List
Manufacturer Frame Grabber Software
Matrox Meteor II Digi, CL MIL
Bitflow Road Runner CL Bay View
Coreco T64 Application software
Data Cube MaxRevolution Visual Chip Studio
Epix PIXCI Application software
Euresys GrabLink Easygrab
EasyColor
Matrix Vision MV-Titan/CL Impact
Green
Green
Green Green
GreenRed
Red
Blue Blue