Alif Image Processing Library

Alif Image processing library is available as a prebuilt library and as a CMSIS pack. Visit releases page.

Supported features

Formats:

• ALPHA8
• ARGB8888
• ARGB4444
• ARGB1555
• RGBA8888
• RGBA4444
• RGBA5551
• BGR888
• RGB565
• YV12
• I420
• I422
• I444
• I400
• NV21
• NV12
• YUY2
• UYVY

Basic operations:

• Crop
• Flip
• Resize
• Rotate

Color correction:

• Color correction using a matrix
• White balance
• Lookup Table channel transformation

Bayer filters that can be decoded into any supported image format:

• RGGB
• GRBG
• BGGR
• GBRG

CMSIS package requirements

This CMSIS pack requires some packs to be installed and added to the project:

• AlifSemiconductor::[email protected]

How to create and install CMSIS package

1. Make sure CMSIS Toolbox installed. Check packchk is available (add CMSIS Toolbox utils path to PATH if necessary):

packchk -V

2. Set CMSIS_PACK_ROOT environment variables to cmsis-packs installation directory:

export CMSIS_PACK_ROOT=<your pack root>

3. Run the generating script:

./gen_pack.sh

4. Install generated CMSIS pack:

cpackget add ./output/AlifSemiconductor.AIPL.1.2.0.pack

How to build the library

ARM Compiler

ARM Compiler can be obtained from the ARM website. Make sure that ARM Compiler's bin/ directory is added to PATH before proceeding.

Build

1. Create and set up aipl_config.h and place it under config/ directory. If the file is not provided aipl_config_template.h is copied.
2. Set up CMake:

cmake -B ./build/ -S . --toolchain ./cmake/toolchains/arm-armclang.cmake -DTARGET_CPU="cortex-m55" -DCMAKE_BUILD_TYPE=Release

3. Build with CMake:

cmake --build build/

4. libaipl.a can be found inside the build/ directory.