NEWS.md

In neuroconductor-devel/Rvision: Computer Vision Library for R

Rvision 0.8.0

Full Changelog: https://github.com/swarm-lab/Rvision/compare/v0.7.0...v0.8.0

New features

• Add camera calibration functions and tutorial.
• Add mask to ECC and minMaxLoc functions.
• Add line detection with probabilistic Hough transform.
• Add goodFeaturesToTrack function (finds the most prominent corners in an image).
• Add pyramid resampling functions (up- and down-).
• Add ORB keypoint detection and matching.
• Add approxPolyDP (Douglas-Peucker algorithm for approximating a polygon with another polygon with fewer vertices).
• Add affine transform matrix computation.
• Add string argument for streams (users can now pass the URL of a video stream or a GStreamer pipeline string).
• Add invertFourcc function to recover a codec's name from its fourcc code.
• Add function to perform 90-degree rotations of images.
• Add undistort function for individual coordinates.

Minor improvements and fixes

• The documentation has been fixed/improved in several places.
• Many bug fixes here and there.
• Update capture and writer properties utilities.

Rvision 0.7.0

New features

• Introduces video stacks.
• Adds frame setters for Video and VideoStack objects.

Minor improvements and fixes

• New logo.
• The documentation has been fixed/improved in several places.
• Minor bug fixes here and there.

Rvision 0.6.5

New features

• New function for smoothing by anisotropic diffusion.
• New function for edge preserving smoothing.
• New function for thresholding with Niblack and Niblack-derived method.
• New function for skeletonization by thinning.

Minor improvements and fixes

• The documentation has been fixed/improved in several places.
• Minor bug fixes here and there.

Rvision 0.6.4

New features

• New function mimicking Matlab "improfile"" function for measuring pixel values along a line segment.
• New function for image concatenation.
• New function for reducing 2D images object to a 1D image (apply-like).
• New function for tiling/repeating images.
• Square root, logarithm, exponential, and power functions are now proper generics.

Minor improvements and fixes

• The documentation has been fixed/improved in several places.
• Minor bug fixes here and there.

Rvision 0.6.3

New features

• Some Hu moment invariants were missing.
• OpenCV DLLs are now copied from ROpenCVLite on installation on Windows.
• New functions to compute square root, logarithm, exponential, and powers.
• New function to compute Gabor kernels for image filtering.
• New function to convert vector fields to polar coordinates and back.

Minor improvements and fixes

• The documentation has been fixed/improved in several places.
• Minor bug fixes here and there.

Rvision 0.6.2

New features

• New arcLength function.
• New Hu moment invariants function.
• New grabCut function.
• New matchShapes function.

Minor improvements and fixes

• The documentation has been fixed/improved in several places.
• Minor bug fixes here and there.
• The function moments and convexityDefects have been changed to follow OpenCV usage. This will break older code.

Rvision 0.6.1

New features

• Compatible with the new RTools 4.2 toolchain on Windows.
• Autothresholding.
• Hough circle detection.
• Can read HIS files.
• Extract/insert single channels from/into images.
• Write multi-images.
• Connected components returns statistics.

Minor improvements and fixes

• The documentation has been fixed/improved in several places.
• Minor bug fixes here and there.

Rvision 0.6.0

New features

• We now have a changelog (yes, I know, finally).
• A large portion of the code base has been rewritten for improving performance and facilitating code maintenance (hopefully).
• In-place operations have been reworked to allow for saving results in target images for more flexibility while maintaining performance.
• GPU support has been added wherever possible. Stupid-fast mode enabled on compatible hardware :-)
• An experimental dynamic queuing system operating on a separate thread has been introduced to allow for reading frames in parallel with image processing on the main R thread.
• New, hopefully more useful vignettes have been added.
• More OpenCV functions are now accessible through Rvision (e.g., histogram equalization).

Minor improvements and fixes

• The documentation has been fixed/improved in several places.
• Minor bug fixes here and there.

neuroconductor-devel/Rvision documentation built on June 10, 2025, 12:04 a.m.