Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# Boost.GIL Examples
+
+This directory contains
+
+- examples of C++ programs using GIL
+- configuration files for Boost.Build command line and CMake integration for popular IDEs.
+
+We provide Boost.Build (`Jamfile`) and CMake (`CMakeLists.txt`)
+configurations to build the examples.
+See the [CONTRIBUTING.md](../CONTRIBUTING.md)
+for details on how to run `b2` and `cmake` for Boost.GIL.
+
+Each example is build as a separate executable.
+Each executable generates its output as `out-<example_name>.jpg`.
+For example, the `resize.cpp` example generates the image `out-resize.jpg`.
+
+The following C++ examples are included:
+
+1. `resize.cpp`
+   Scales an image using bilinear or nearest-neighbour resampling.
+
+2. `affine.cpp`
+   Performs an arbitrary affine transformation on the image.
+
+3. `convolution.cpp`
+   Convolves the image with a Gaussian kernel.
+
+4. `mandelbrot.cpp`
+   Creates a synthetic image defining the Mandelbrot set.
+
+5. `interleaved_ptr.cpp`
+   Illustrates how to create a custom pixel reference and iterator.
+   Creates a GIL image view over user-supplied data without the need to cast to GIL pixel type.
+
+6. `x_gradient.cpp`
+   Horizontal gradient, from the tutorial
+
+7. `histogram.cpp`
+   Algorithm to compute the histogram of an image
+
+8. `packed_pixel.cpp`
+   Illustrates how to create a custom pixel model - a pixel whose channel size is not divisible by bytes.
+
+9. `dynamic_image.cpp`
+   Example of using images whose type is instantiated at run time.