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Capture3

Capture3 is a C++ desktop application that can capture and process photos through a tethered connection with a digital camera. It started out as a research project to learn more about digital cameras, image processing, color spaces, C++, OpenCV and multi-threading. The main features are:

  1. Tethered capturing: Automatically capture multiple photos with different exposure values and focus planes, without touching the camera.
  2. Automatic color calibration: This works by detecting a X-Rite ColorChecker Digital SG target in a photo, then automatically detecting each of the 140 colored patches and calculating a white point and color matrix from these values.
  3. Exposure merging: Merge photos with different exposure brackets to create a HDR image.
  4. Focus merging: Merge photos with different focal planes through a technique called focus stacking to create one result image with a higher DOF (Depth Of Field).
  5. Color space visualizer: Preview images in RGB, HSB, XYZ and LAB color spaces, including 3D color space graphs.

Capture3 is developed using JetBrains CLion and can be built on a Mac with macOS Sierra or higher. Although it could support other camera's, it's only tested using a Nikon D3300 and Sigma 35mm f/1.4 DG HSM Art lens.

Learn more

  • Qt5 → Application framework used to create the GUI
  • OpenCV → Image processing library
  • OpenMP → Amazing multi-threading library
  • Imatest → Great resource on color targets and color matrix calculations
  • Bruce Lindbloom → Great resource color space math
  • Oscar de Lama → Great resource on RAW processing

Screenshots

Empty interface

Full interface

Histogram panel

3D color space panel

Waveform panel

Requirements

Libraries

  • autoconf 2.69
  • automake 1.15
  • gcc 4.9.4
  • gcc 6.3.0
  • gettext 0.19.8.1
  • libiconv 1.14
  • libtool 2.4.6
  • mpc 1.0.3
  • readline v6.3
  • sed 4.2.2
  • isl 0.12.2
  • isl 0.16.1
  • eigen 3.3.1
  • tiff 4.0.7
  • boost 1.63.0
  • freeimage 3.17.0
  • freetype 2.7.1
  • gphoto2 2.5.11
  • libgphoto2 2.5.11
  • lcms2 2.8
  • libexif 0.6.21
  • libpng 1.6.27
  • libusb 1.0.21
  • libusb-compat 0.1.5
  • pcre 8.39
  • ffmpeg 3.2.2
  • glfw 3.2.1
  • libffi 3.2.1
  • libgd 2.1.1
  • opencv 3.2.0
  • opencv_contrib 3.2.0
  • gmp 6.1.2
  • popt 1.16
  • cloog 0.18.4
  • cairo 1.14.8
  • pixman 0.34.0
  • fontconfig 2.12.1
  • pkg-config 0.29.1
  • jpeg 9b
  • libraw 0.18.0
  • libraw-demosaic-pack-GPL2 0.18.0
  • libraw-demosaic-pack-GPL3 0.18.0
  • mpfr 3.1.5
  • nasm 2.12.02
  • openssl 1.1.0c

Install

We use Yarn package manager to manage our dependencies.

curl -o- -L https://yarnpkg.com/install.sh | bash
yarn install

Run

./debug.sh

Release

./release.sh