User manual

Hardware Platform

XAPP794 (v1.3) December 20, 2013 www.xilinx.com 36

This core is responsible for correcting defective pixels, as illustrated in Figure 36.

For additional information about the Defective Pixel Correction LogiCORE solution and the

detailed product guide, see the Defective Pixel Correction product page:

ww.xilinx.com/products/intellectual-property/EF-DI-DEF-PIX-CORR

Color Filter Array Interpolation

The AXI Color Filter Array (CFA) core is the second processing element in the image

processing pipeline, as shown in Figure 37.

The most widespread and cost effective implementation of color image sensors involves

placing color filters on top of each pixel in a Bayer pattern arrangement, as shown in Figure 38.

With this arrangement of color filters, each pixel captures only one of the three primary colors.

The CFA core restores the missing two colors based on neighboring pixels.

For additional information about the Color Filter Array Interpolation LogiCORE solution and the

detailed product guide, see the Color Filter Array Interpolation product page:

ww.xilinx.com/products/intellectual-property/EF-DI-CFA

X-Ref Target - Figure 36

Figure 36: Defective Pixel Correction

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X-Ref Target - Figure 37

Figure 37: AXI CFA Core Pipeline Position

AXI

DPC

AXI

CFA

AXI

Enhance

Chroma

Resampler

AXI

Stats

AXI

TPG

AXI

RGB2YUV

AXI

Gamma

AXI

TPG

AXI

CCM

X794_37_110513

X-Ref Target - Figure 38

Figure 38: Bayer Pattern Color Filter

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