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Learning OpenCV
book

Learning OpenCV

by Gary Bradski, Adrian Kaehler
September 2008
Beginner to intermediate content levelBeginner to intermediate
580 pages
20h 7m
English
O'Reilly Media, Inc.
Content preview from Learning OpenCV

Matrix and Image Operators

Table 3-3 lists a variety of routines for matrix manipulation, most of which work equally well for images. They do all of the "usual" things, such as diagonalizing or transposing a matrix, as well as some more complicated operations, such as computing image statistics.

Table 3-3. Basic matrix and image operators

Function

Description

cvAbs

Absolute value of all elements in an array

cvAbsDiff

Absolute value of differences between two arrays

cvAbsDiffS

Absolute value of differences between an array and a scalar

cvAdd

Elementwise addition of two arrays

cvAddS

Elementwise addition of an array and a scalar

cvAddWeighted

Elementwise weighted addition of two arrays (alpha blending)

cvAvg

Average value of all elements in an array

cvAvgSdv

Average value and standard deviation of all elements in an array

cvCalcCovarMatrix

Compute covariance of a set of n-dimensional vectors

cvCmp

Apply selected comparison operator to all elements in two arrays

cvCmpS

Apply selected comparison operator to an array relative to a scalar

cvConvertScale

Convert array type with optional rescaling of the value

cvConvertScaleAbs

Convert array type after absolute value with optional rescaling

cvCopy

Copy elements of one array to another

cvCountNonZero

Count nonzero elements in an array

cvCrossProduct

Compute cross product of two three-dimensional vectors

cvCvtColor

Convert channels of an array from one color space to another ...

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Publisher Resources

ISBN: 9780596516130Supplemental ContentErrata Page