BoofCV Change Log

Change Log

Date Format: year/month/day

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Date  : 2015/09/20 Version : Alpha 0.19

• Removed -1 from CachedSineCosine_F32
  • Change suggested by Jochem
  • Original code could cause problems for edge cases in hough transform
• Moved BufferedImage to IO package since it is swing dependent
  • Suggested by Baha Elkassaby
• JCodec
  • Formally added it back in since it works on Android videos
  • Added utilities to convert Picture into BoofCV formatted images
• Images can be serialized again
  • Made ImageType serializable now
  • Fixed bug where subimages were not assigned an image type.
• Scene classification
  • Bag-of-Words based techniques
  • K-Nearest-Neighbor classification. Learning and Classifier
• Image setTo() will now automatically resize the image to match it's input
• Added invert option to visualizing binary images
  • swing and android
• Added in-place CW and CCW image rotation
• Fiducials
  • Image square fiducials can now have their width individually set
  • Square based fiducials now use the new polygon detector and benefit from its improved subpixel
  • Fixed bug where the returned orientation was inconsistent with the JavaDoc
  • Fixed another bug that caused the sides to "flip" depending on view angle
  • Handling of small far away fiducials being viewed head on has improved much
• PerspectiveOps
  • Can render pixel in camera frame using IntrinsicParameters
• Created FactoryMultiViewRobust for simplifying the creation of robust versions of solutions to PnP, essential, homography
• Camera Model
  • Support for tangential distortion has been added
  • Intrinsic parameters can now use a flow style assignment of parameters
  • Removed support for flipY to simplify the code. Just flip the image if this is an issue.
  • Lens distortion. More abstracted
• LensDistortionOps
  • refactored several functions to make it more consistent and easier to use
  • Change fullView to expand
  • Many functions will now correct for lens distortion.
• Square grid calibration target
  • Fixed. Multiple bugs were introduced at some point in the past but were not caught due to the lack of regression tests
  • Change underlying algorithm. Now uses polygon detector for corners.
• Chessboard calibration target
  • Complete re-write. Now uses polygon detector
  • Corner precision appears to have improved and runs faster
• Calibration
  • A single class fully specifies the calibration target now
  • Intrinsic parameters can now use a flow style assignment of parameters
• Interpolation
  • Can specify a border handling algorithm now
• PixelMath
  • Added minus(image,scalar)
  • Added minus(scalar,image)
• Distortion
  • Scale once again goes from in.width/out.width instead of (in.width-1)/(out.width-1)
    • The former is correct, but you have to deal with interpolating values like 9.5 when there are 10 pixels (9 is largest index)
  • Added FDistort
    • Much easier to use and more flexible than the procedural fuctions in DistortImageOps
• FactoryDerivativeSparse
  • Added sobel, prewitt, three, two0, two1
• Gradient Two0 and Two1
  • There are two different ways to define the gradient from two samples, depending on the zero index.
  • Two0 is [1] * [0] and Two1 is [0] * [-1].
  • Before only one of these variants was available
• UtilImageIO
  • Can save an image directly that is in BoofCV format
• Shape Features
  • Corner fitting algorithm that uses the tangent of the gradient
  • Black convex polygon detector
  • Polygon fitting
• ShowImages
  • Will now display any BoofCV image directly.
• Android
  • Can convert from 8888 to 3 channel multi-spectral images
  • Moved NV21 out of Android because it's also useful with Webcams
• Added support for YV12 image format
• BinaryImageOps
  • BinaryImageOps.labelToBinary() now has an easier to use variant. No need to explicitly declare a boolean array
  • Added thin() operator for thinning/skeletonization
• Template Matching
  • Can provide a mask for a template and effectively make pixels transparent or translucent
  • Requested by Rafael Maus and others
• ConvertBufferedImage
  • Tweaked defaults for boof to BufferedImage. Single band images return single band images.
    • Thanks thhart for pointing this out
  • Added partial support for images encoded with SunWritableRaster
  • Much improved support of BoofCV Interleaved images
• ThresholdImageOps
  • Changed threshold up from >= to >.
  • Turns out the original choice was bad. Images were not inverses of each other
  • Was possible the threshold an image with two values up and end up with all 0.
• PyBoof has been added to integration
  • Python wrapper for BoofCV
  • Thanks Romotive allowing donating this code!
• GHistogramFeatureOps, Histogram_F64, HistogramFeatureOps
  • Computes color histograms with the intent that they can be used as features
  • Supports an arbitrary number of color bands
  • Can also be computed from a list of pixel values
  • arbitrary min/max values and number of bins also supported
  • Example added demonstrating how to look up images with similar histograms
• GImageDerivativeOps
  • General cleaning up the API
  • Fewer functions, but uses enum for specific type
  • Function for AnyImageDerivative is clearly named and more useful
• ImageMiscOps
  • fill band and bands
  • insert band
• Background Model / Motion Detection
  • For stationary cameras and moving cameras
  • Basic: pixels modeled with a fading average
  • Gaussian: pixels modeled with a fading Normal distribution