org.opencv.core

Class Range

java.lang.Object

org.opencv.core.Range

public class Range
extends Object

Template class specifying a continuous subsequence (slice) of a sequence.

class CV_EXPORTS Range

// C++ code:

public:

Range();

Range(int _start, int _end);

Range(const CvSlice& slice);

int size() const;

bool empty() const;

static Range all();

operator CvSlice() const;

int start, end;

};

The class is used to specify a row or a column span in a matrix (

"Mat") and for many other purposes. Range(a,b) is basically the same as a:b in Matlab or a..b in Python. As in Python, start is an inclusive left boundary of the range and end is an exclusive right boundary of the range. Such a half-opened interval is usually denoted as [start,end). The static method Range.all() returns a special variable that means "the whole sequence" or "the whole range", just like " : " in Matlab or " ... " in Python. All the methods and functions in OpenCV that take Range support this special Range.all() value. But, of course, in case of your own custom processing, you will probably have to check and handle it explicitly:

// C++ code:

void my_function(..., const Range& r,....)

if(r == Range.all()) {

// process all the data

else {

// process [r.start, r.end)

See Also:

org.opencv.core.Range

Field Summary

Fields

Modifier and Type	Field and Description
int	end
int	start

Constructor Summary

Constructors

Constructor and Description
Range()
Range(double[] vals)
Range(int s, int e)

Method Summary

Methods

Modifier and Type	Method and Description
static Range	all()
Range	clone()
boolean	empty()
boolean	equals(Object obj)
int	hashCode()
Range	intersection(Range r1)
void	set(double[] vals)
Range	shift(int delta)
int	size()
String	toString()

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

start

public int start

end

public int end

Constructor Detail

Range

public Range(int s,
     int e)

Range

public Range()

Range

public Range(double[] vals)

Method Detail

set

public void set(double[] vals)

size

public int size()

empty

public boolean empty()

all

public static Range all()

intersection

public Range intersection(Range r1)

shift

public Range shift(int delta)

clone

public Range clone()

Overrides:

clone in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object