vl_compile Compile VLFeat MEX files

• Agglomerative Information Bottleneck
• Compute a histogram by using an AIB compressed alphabet
• Quantize based on VL_AIB cut
• Compute histogram over VL_AIB tree

• Fisher vector feature encoding

• Hat operator
• Inverse vl_hat operator
• Inverse Rodrigues' formula
• Rodrigues' formula

• Learn a Gaussian Mixture Model using EM

• Derivative of an affine warp
• Flattens image array
• Scale and flattens image array
• Image distance transform
• Downsample an image by two
• Compute integral image
• Generate an image from a stock pattern
• Reads an image as gray-scale
• Reads an image as gray-scale
• Upsample an image by two
• Convert RGB color space to XYZ
• Compute the thin-plate spline basis
• Compute the U matrix of a thin-plate spline transformation
• Apply affine transformation to points
• Inverse thin-plate spline warping
• Thin-plate spline warping
• Convert XYZ color space to LAB
• Convert XYZ color space to LUV
• Convert XYZ to RGB

• Hierachical integer K-means
• Compute histogram of quantized data
• Push data down an integer K-means tree
• Compute histogram of quantized data
• Project data on integer K-means paritions
• Cluster data using k-means

• Pairwise distances
• Sort strings using the Alphanum algorithm
• Parse list of parameter-value pairs
• Binned summation
• Select a given number of columns
• Cumulative maximum
• Get MATLAB process ID
• Compute the gradient of an image
• Marginal of histogram
• Compute HOG features
• Homogeneous kernel map
• Find labels in an integer hash table
• Accumulate integer labels into a hash table
• Calculate Integral Histogram
• Determines whether Octave is running
• Build randomized kd-tree
• Local Binary Patterns
• Flip LBP features left-right
• Find local maximizers
• Return MATLAB version as an integer
• Numerical derivative
• Numerical second derivative
• Override structure subset
• Toggle VLFeat SIMD optimizations
• Construct advanced SVM dataset structure
• Train a Support Vector Machine
• Control VLFeat computational threads
• Random number generator
• Obtain VLFeat version information
• Weighted histogram
• Create a directory recursively.

• Fill extremal region
• Transpose exremal regions frames
• Maximally Stable Extremal Regions

• vl_cf Creates a copy of a figure
• Select a point by clicking
• Select a segment by clicking
• Compute DET curve
• Set figure aspect ratio
• Convert PLOT style line specs to line properties
• Plot a geometric frame
• Plot 2 or 3 dimensional points
• vl_pr Precision-recall curve.
• Set the printing size of a figure
• ROC curve.
• Tiles axes without wasting space
• Compute true positives and false positives

• Flatten a tree, assigning the label of the root to each node
• Color an image based on the segmentation
• Produce a quickshift segmentation of a grayscale or color image
• Quick shift image segmentation
• Create an edge image from a Quickshift segmentation.

• Covariant feature detectors and descriptors
• Convert a geometric frame to an oriented ellipse
• Local Intensity Order Pattern descriptor
• Extract PHOW features
• Plot scale space
• Scale-Invariant Feature Transform
• Match SIFT features
• Read Lowe's SIFT implementation data files

• SLIC superpixels

• Second derivative of the Gaussian density function
• Derivative of the Gaussian density function
• Derivative of the sigmoid function
• Standard Gaussian density function
• RCOS function
• Sigmoid function

• VLAD feature encoding