BoofCV Change Log

Change Log

Date  : 2016/01/24

Version : Alpha 0.21

• Scale-Space Features
  • getScale() has been replaced with getRadius(), which refers to the radius of the detected object
• SURF
  • Fixed a bug dealing with gradient calculation and improved stability for very small objects
  • Exposed an inner parameter. You can now change the kernel size increment between scales
• WebcamTrackFiducial renamed to FiducialDetection
  • Can now process more inputs sources; still images, videos, and webcams.
  • Output to a file is a possibility
• Renamed SurfFeature to BrightFeature
  • Used by SURF and SIFT, so the name was made more generic
• SIFT
  • Complete rewrite of detector and descriptor
  • Very similar to original paper by Lowe
  • One difference is the use of quadratic interpolation instead of the overly complex thing that Lowe proposed
• Dense SIFT
  • Optimized code for computing dense descriptors at a fixed scale in a grid across the entire image
• Black polygon detector
  • can now handle features along image border
  • fixed a couple of bugs inside refine function too
  • improved false positive rejection (e.g. squarish bright lights)
• Square Fiducials
  • Threshold is now done using the average of pixel intensity along the fiducial border
  • Image border is used to remove false positives
• Change / Clarified behavior of non-maximum suppression classes
  • Border refers to the border around the image in which extremes cannot be found
  • A pixel inside the border can have a value larger than one inside the image and prevent it from being considered an extreme
• FactoryPlanarCalibrationTarget renamed to FactoryCalibrationTarget
• Improved visualization in ShapeFitContourApp
• ConvertImage
  • Interleaved to MultiSpectral
  • MultiSpectral to Interleaved
  • Any single band into into ImageUInt8 with the specified pixel value range
• Chessboard detector
  • Links squares together using corners instead of two independently detected grids
  • Can now detect targets in which the outer squares have been clipped by the image's border
• Square Grid Detector
  • Changed how the pattern is specified. Based on black squares now
• DetectLineHoughPolar
  • Fixed issue were a strict non-maximum was used when a non-strict was needed, causing valid lines to be discarded
• WebcamCapture
  • Provided an easy to use function that allows you to open devices by their /dev name
• Image Thresholding: LocalSquareBlockMinMax Added
  • Breaks the image up into a grid and computes the min and max pixel value, which is used to compute a threshold
  • Enabled the detection of black objects partially outside the view
  • Is very fast
• Android
  • Will automatically detect if image needs to be rotated 180 degrees and then does it. Needed for the Nexus 5x