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Blackfly - CYLOD

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Point Grey <strong>Blackfly</strong> Technical Reference<br />

8 <strong>Blackfly</strong> Attributes<br />

8 <strong>Blackfly</strong> Attributes<br />

8.1 Pixel Formats<br />

Pixel formats are an encoding scheme by which color or monochrome images are produced from raw image data.<br />

Most pixel formats are numbered 8, 12, or 16 to represent the number of bits per pixel.<br />

The <strong>Blackfly</strong>'s ADC, which digitizes the images , is configured to a fixed bit output. If the pixel format selected has<br />

fewer bits per pixel than the ADC output, the least significant bits are dropped. If the pixel format selected has greater<br />

bits per pixel than the ADC output, the least significant bits are padded with zeros.<br />

Pixel Format<br />

Bits per Pixel<br />

Mono 8, Raw 8 8<br />

Mono 12, Raw 12, YUV 411 12<br />

Mono 16, Raw 16, YUV 422 16<br />

RGB 8, YUV 444 24<br />

8.1.1 Raw<br />

Raw is a pixel format where image data is Bayer RAW untouched by any on board processing. Selecting a Raw format<br />

bypasses the FPGA/color core which disables image processing, such as gamma/LUT and color encoding, but allows<br />

for faster frame rates.<br />

8.1.2 Mono<br />

Mono is a pixel format where image data is monochrome. Color cameras using a mono format enable FPGA/color<br />

core image processing such as access to gamma/LUT.<br />

Y8 and Y16 are also monochrome formats with 8 and 16 bits per pixel respectively.<br />

8.1.3 RGB<br />

RGB is a color-encoding scheme that represents the intensities of red, green, and blue channels in each pixel. Each<br />

color channel uses 8 bits of data. With 3 color channels, a single RGB pixel is 24 bits.<br />

8.1.4 YUV<br />

YUV is a color-encoding scheme that assigns both brightness (Y) and color (UV) values to each pixel. Each Y, U, and V<br />

value comprises 8 bits of data. Data transmission can be in 24, 16, or 12 bits per pixel. For 16 and 12 bits per pixel<br />

transmissions, the U and V values are shared between pixels to free bandwidth and possibly increase frame rate.<br />

YUV444 is considered a high resolution format which transmits 24 bits per pixel. Each Y, U, and V value has 8 bits.<br />

Revised 12/13/2012<br />

Copyright ©2012 Point Grey Research Inc.<br />

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