User manual

Running the Demonstration
XAPP794 (v1.3) December 20, 2013 www.xilinx.com 23
Capturing a 1080P Image
The Image Capture section of the web-based GUI allows capturing an image from the video
frame buffer, as shown in Figure 19.
After clicking Click to Take Snapshot, a scaled-down version of the image is displayed in the
GUI. A full-size version of the image (24-bit RGB 1920 x 1080 bitmap (BMP)) can be saved to
the host hard drive by right-clicking the image and selecting Save Picture As. This allows
analysis of the image with a separate image viewing program.
Configuring the Defective Pixel Correction
The Xilinx Defective Pixel Correction IP core can be configured with three sliders, as shown in
Figure 20.
To observe the operation of the Defective Pixel Correction core, move the Pixel Age slider to
100. A few small white dots appear on the monitor. To better see the dots, point the image
sensor at a uniform dark background. These are defective pixels in the image sensor. As the
Pixel Age Slider is moved back to 0, the defective pixels are effectively removed from the image
by the Defective Pixel IP core processing.
X-Ref Target - Figure 19
Figure 19: Image Capture Controls
X-Ref Target - Figure 20
Figure 20: Defective Pixel Correction IP Core Controls
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