Class: OpenCV::CvSeq

Inherits:

Object

• Object
• OpenCV::CvSeq

Defined in:

ext/opencv/cvseq.cpp

Overview

Generic Sequence class. CvSeq has the method like Array (push, pop, select, etc…). But, CvSeq cannot store the object of a different class. When storing object in CvSeq, conversion is automatically tried, and the object occurs the error if it cannot be done.

e.g.

seq = CvSeq.new(CvPoint)    # Argument mean "this sequence contain only this class's object"
seq.push(CvPoint.new(0, 0)) # => it's ok
seq.push("hello")           # => try convert "hello" to CvPoint. but can't do it. raise error.

If the sequecne contain object of class A. When storing object(named “obj”) of class B to the sequence.

Try automatically : A.from_B(obj) => object of class A.

The sequence might have another sequence outside. see below. Each sequece has h_prev, h_next, v_prev, v_next method. If the adjoining sequence exists, each method return the adjoining sequence. Otherwise return nil.