BoofCV Change Log

Change Log

Date Format: year/month/day

Date : 2012/02/01 Version : Alpha 0.5

Improved SURF performance
- Fixed various bugs and changed algorithm to improve performance
  - Both speed and stibility have been improved
- Now is the best performing SURF implementation in the benchmark
ImplOrientationSlidingWindowIntegral has been replaced with a faster and more accurate algorithm
Improved integral image support
Improved sparse gradient support
Refactored sparse image operator code
- Added SparseImageSample interface
Added/Improved unconstrained non-linear optimization code
- Quasi-Newton line search
- Levenberg-Marquardt
Geometric vision and calibration code which uses non-linear optimization now works correectly
Started converting internal micro benchmarks to use Caliper

Date : 2012/01/06 Version : Alpha 0.4

Changed behavior of ConvertBufferedImage so that it won't automatically swap bands in MultiSpecitral image
- orderBandsIntoRGB() has been provided to do that manually if needed
All automatic convert to/from BGR and been removed from ConvertRaster
Fixed SURF related issue
- Image bounds check was being incorrectly performed for integral image orientation estimation algorithms (Thanks Oleg Chernoguz for pointing this out)
- FactoryOrientationAlgs.sliding_ii() was creating an average orienation alg for I32 images
- Some coordinates were integer instead of double
Added comments to several factories and other classes
Added ant script for examples and readme.txt explaining how to use it

Date : 2012/01/02 Version : Alpha 0.3

Camera Calibration
- Planar grid (Zhang 98)
- Camera calibration matrix from homographies
- Linear radial distortion
- Decomposition of homography for calibration
- Nonlinear optimization of all parameters
Calibration Grid Detection
- Detects corners up to "pixel accuracy", in reality its probably worse than that
- Sub-pixel accuracy code exists but needs more work
Added min and max values to ImageTestingOps.addGaussian()
Tweaked factories related to wavelet denoising so that they take in an image type.
Removed cyclical dependency between modules by creating a visualize modules
Added to BinaryImageOps
- label to clusters
- clusters to binary
Renamed ImageBase to ImageSingleBand
Created a new ImageBase
Flushed out MultSpectral image type more and extended ImageBase
- Created functions to convert to and from BufferedImage
Changed behavior of several functions in GeneralizedImageOps to include MultiSpectral images
- refactor createImage -> createSingleBand
Updated ant scripts
- Common template is now used for the different modules
- Fixed unit test and make it work across the whole project
Added crop to ImageDistort
- If cropping is used the only part of the destimation image is processed
Created calibration package to hold calibration related code
Moved jars not part of the primary build into boofcv/lib/testing
Started converting runtime benchmark code over to Caliper
- http://code.google.com/p/caliper/

Date : 2011/12/01 Version : Alpha 0.2

Added integer polynomial interpolation
- Cleaned up polynomial interpolation code
Fixed bug in PixelMath.bound() dealing with unsigned images
Converting to a BufferedImage now marks it as modified
Added min and max pixel values to ImageTypeInfo
Added ComplexMath
Added PolynomialSolver
Added process(image) to PointSequentialTracker and renamed it to ImagePointTracker
Added the following 3D vision code:
- Linear 8-point essential/fundamental matrix
- Linear 7-point essential/fundamental matrix
- Linear 4-point homography
- Extract camera motion from essential
- Extract camera and plane normal from homography
- Triangulate: Linear pixel depth
- Projective N Point (PNP): Linear N >= 6
Added non-linear optimizer based upon Levenberg-Marquardt
Added pixel region based descriptors
- Raw pixel values
- Normalized Cross Correlation (NCC)
Added pixel region based trackers
Added Sum of Absolute Difference (SAD) score for feature association with a few different descriptor types.

Date : 2011/11/01 Version : Alpha 0.1

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