Allied Manta Manual de Instruções descarregar pdf (Página 127)

Manta Technical Manual V7.2.0

127

Camera data path

Color interpolation (Bayer demosaicing)

The color sensors capture the color information via so-called primary color (R-

G-B) filters placed over the individual pixels in a Bayer mosaic layout. An

effective Bayer  RGB color interpolation already takes place in all Manta color

version cameras.

In color interpolation a red, green or blue value is determined for each pixel. An

Allied Vision proprietary Bayer demosaicing algorithm is used for this interpo-

lation (2x2), optimized for both sharpness of contours as well as reduction of

false edge coloring.

Color processing can be bypassed by using the RAW image transfer.

RAW mode is primarily used to

• save bandwidths on the Gigabit Ethernet network

• achieve higher frame rates

• use different Bayer demosaicing algorithms on the PC

– for Manta the first pixel of the sensor is RED

Figure 93: Bayer demosaicing (Manta type A: example of 2x2 matrix)

Figure 94: Bayer demosaicing (Manta type B: example of 3x3 matrix)

Note



If the PC does not perform Bayer to RGB post-processing, the

monochrome image will be superimposed with a checkerboard

pattern.

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Allied Manta Manual de Instruções Página 127