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Common Vision Blox 15.0
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Common Vision Blox 15.0
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The Pixel Format Naming Convention (PFNC) is a standardized scheme used in machine vision to name and describe pixel formats. It covers both 2D and 3D imaging data.
CVB follows this convention and provides convenient tools for converting between formats using the Cvb::PixelFormatConverter (C++), Stemmer.Cvb.PixelFormatConverter (.NET), and cvb.PixelFormatConverter (Python). Please note that while most formats are supported for conversion, they can only be converted to commonly used (displayable) formats.
For more general information about PFNC, refer to the official documentation.
Bayer conversion is the process of transforming raw image data from a camera sensor that uses a Bayer filter into a full-color RGB image. Each pixel in the raw Bayer image records only one color (red, green, or blue), and the missing color values are estimated through a process called demosaicing, which reconstructs the complete color information for each pixel.
| G | R | G | R | G | R | G | R |
| B | G | B | G | B | G | B | G |
| G | R | G | R | G | R | G | R |
| B | G | B | G | B | G | B | G |
| G | R | G | R | G | R | G | R |
| B | G | B | G | B | G | B | G |
| RGB | RGB | RGB | RGB |
| RGB | RGB | RGB | RGB |
| RGB | RGB | RGB | RGB |
With CVB, performing a Bayer-to-RGB conversion is straightforward using the Cvb::PixelFormatConverter (C++), Stemmer.Cvb.PixelFormatConverter (.NET), and cvb.PixelFormatConverter (Python). Example programs for Bayer conversion are provided in the section below.
Example programs for PFNC format conversion, such as a Bayer conversion, are provided in C++, .NET and, Python. You can find them in your CVB setup under %cvb%Tutorial/Image Manager or in the online documentation, as listed in the table below:
| Link to Example | Location in your CVB Setup | |
|---|---|---|
| C++ | PixelFormatConversion | %cvb%Tutorial/Image Manager/Cvb++/CppPixelFormatConversion |
| .NET | PixelFormatConversion | %cvb%Tutorial/Image Manager/Cvb.Net/PixelFormatConversion |
| Python | PixelFormatConversion | %cvb%Tutorial/Image Manager/CVBpy/PixelFormatConversion |