Allied Vision Technologies MF-145B2 Manuel d'instructions télécharger pdf (Page 83)

Description of the data path

8.13 Sub-sampling (CMOS)

A reduction in the number of pixels and thus the amount of data while retaining the original

an increase in the frame rate.

imilar to binning mode the cameras support horizontal, vertical and h+v sub-sampling mode.

ontal sub he nt erns

are shown below.

Sub-sampling is the process of skipping neighboring pixels (with the same color) while being

read out from the CMOS chip.

All CMOS equipped Marlin models, both color and b/w have this feature (FW > 2.03).

Sub-sampling is used primarily for 2 reasons:



image area angle,



Use Format_7 Mode_1 to activate horiz -sampling. T differe sub-sampling patt

Figure 49: Left: Horizontal sub-sampling B/W; right: Color

 The image appears horizontally compressed in this mode and does no longer show true aspect

ratio.

if b s are

shown below.

Use Format_7 Mode_2 to activate vertical sub-sampling. The d ferent su -sampling pattern

Figure 50 Vertical sub-sampling B/W; right: Color

 The image appears vertically compressed in this

ratio.

mode and does no longer show true aspect

MARLIN Technical Manua

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Allied Vision Technologies MF-145B2 Manuel d'instructions Page 83