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README
Apache-2.0

libXCam

Copyright (C) 2014-2019 Intel Corporation

libxcam core source code under the terms of Apache License, Version 2.0

Description:

libXCam is a project for extended camera features and focus on image quality improvement and video analysis. There are lots features supported in image pre-processing, image post-processing and smart analysis. This library makes GPU/CPU/ISP working together to improve image quality. OpenCL is used to improve performance in different platforms.

Features:

  • Image processing features
    • Advanced features
      • Automotive surround view(360) stitching (OpenCL/CPU/GLES)
        • Support bowl view 3D model stitching by 4 video input.
        • Enable geometry remap for WFoV camera calibration(intrinsic and extrinsic data).
        • Quality and performance improved (OpenCL/CPU/GLES).
        • CPU version upstreamed into AOSP for automotive surround view.
        • Enable Vulkan to improve performance.
      • 360 video stitching (Equirectangular mode via OpenCL/CPU)
        • Support 8K 3-cameras video stream stitching.
        • Support 2-fisheye (>180 degree) video stream stitching.
        • Performance and quality improved.
      • DNN inference framework
        • Support pedestrian and vehicle detection.
      • Digital Video Stabilization
        • OpenCV feature-matched based video stabilization.
        • gyroscope 3-DoF (orientation) based video stabilization.
      • Blender: multi-band blender (OpenCL/CPU/GLES)
      • Noise reduction (OpenCL)
        • adaptive NR based on wavelet-haar and Bayersian shrinkage.
        • 3D-NR with inter-block and intra-block reference.
        • wavelet-hat NR (obsolete).
      • Wide dynamic range (WDR) (OpenCL)
        • histogram adjustment tone-mapping.
        • gaussian-based tone-mapping (obsolete).
      • Fog removal: retinex and dark channel prior algorithm (OpenCL)
        • dark channel prior algorithm based defog.
        • multi-scale retinex based defog (obsolete).
    • Basic pipeline from bayer to YUV/RGB format (OpenCL / AtomISP)
      • Gamma correction, MACC, color space, demosaicing, simple bilateral noise reduction, edge enhancement and temporal noise reduction.
    • 3A features
      • Auto whitebalance, auto exposure, auto focus, black level correction, color correction, 3a-statistics calculation.
  • Support 3rd party 3A lib which can be loaded dynamically
    • hybrid 3a plugin.
  • Support 3a analysis tuning framework for different features
  • Support smart analysis framework
    • Face detection interface/plugin.
  • Enable gstreamer plugin
    • xcamsrc, capture from usb/isp camera, process 3a/basic/advanced features.
    • xcamfilter, improve image quality by advanced features and smart analysis.

Prerequisite:

  • install gcc/g++, automake, autoconf, libtool, gawk, pkg-config
  • Linux kernel > 3.10
  • install ocl-icd-dev, ocl-icd-opencl-dev
  • If --enable-gst, need install libgstreamer1.0-dev, libgstreamer-plugins-base1.0-dev
  • If --enable-aiq, need get ia_imaging lib which we don't support
  • If --enable-libcl, need compile or install OpenCL driver
  • If --enable-opencv, suggest OpenCV versions [3.0.0 - 4.0.0) (or: OpenCV Wiki)
  • If --enable-render, need compile OpenSceneGraph library with configure option "-DOSG_WINDOWING_SYSTEM=X11"
  • If --enable-gles, need to install Mesa3D library
  • If --enable-vulkan, need to install Mesa3D library
  • If --enable-dnn, need to compile OpenVino inference-engine

Building and installing:

  • Environment variable settings
    For different --prefix options, the environment variables may be different. Please set the environment variable according to the actual situation.
    --prefix=/usr/local:

    export LD_LIBRARY_PATH=/usr/local/lib/:$LD_LIBRARY_PATH
    export GST_PLUGIN_PATH=/usr/local/lib/gstreamer-1.0:$GST_PLUGIN_PATH

    --prefix=/usr:

    export LD_LIBRARY_PATH=/usr/lib/:$LD_LIBRARY_PATH
    export GST_PLUGIN_PATH=/usr/lib/gstreamer-1.0:$GST_PLUGIN_PATH
  • $ ./autogen.sh [options]

    --prefix=PREFIX         install architecture-independent files in PREFIX [default=/usr/local]
    --enable-debug          enable debug, [default=no]
    --enable-profiling      enable profiling, [default=no]
    --enable-drm            enable drm buffer, [default=no]
    --enable-aiq            enable Aiq 3A algorithm build, [default=no]
    --enable-gst            enable gstreamer plugin build, [default=no]
    --enable-libcl          enable libcl image processor, [default=yes]
    --enable-opencv         enable opencv library, [default=no]
    --enable-capi           enable libxcam-capi library, [default=no]
    --enable-docs           build Doxygen documentation [default=no]
    --enable-3alib          enable 3A lib build, [default=no]
    --enable-smartlib       enable smart analysis lib build, [default=no]
    --enable-gles           enable gles, [default=no]
    --enable-vulkan         enable vulkan, [default=no]
    --enable-render         enable 3D texture render, [default=no]
    --enable-dnn            enable dnn inference, [default=no]

    For example:

    $ ./autogen.sh --prefix=/usr --enable-gst --enable-libcl --enable-opencv \
      --enable-smartlib --enable-profiling --enable-gles --enable-render --enable-dnn
  • $ make

  • $ sudo make install

Testing:

  • For detailed test cases, please go to tests page

Reporting Bugs:

  • Bugs or suggestions can be reported on the github issues page
  • Security issues, please send email to wei.zong@intel.com directly

Mailing list

Maintainer:

Contributors: (orders by first name)

Copyright (c) 2014-2019 Intel Corporation Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. 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简介

libXCam是一个扩展相机功能的项目,专注于图像质量改进和视频分析 展开 收起
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