Package boofcv.abst.feature.describe

Class ConfigSiftScaleSpace

java.lang.Object

boofcv.abst.feature.describe.ConfigSiftScaleSpace

All Implemented Interfaces:

Configuration, Serializable

public class ConfigSiftScaleSpace
extends Object
implements Configuration

Configuration for SiftScaleSpace

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
int	firstOctave	Specified the first and last octaves.
int	lastOctave	Specified the first and last octaves.
int	numScales	Number of scales in each octave.
float	sigma0	Amount of blur at the first level in the image pyramid.

Constructor Summary

Constructors

Constructor	Description
ConfigSiftScaleSpace()

Method Summary

Modifier and Type	Method	Description
void	checkValidity()	Checks to see if the configuration is valid.
static ConfigSiftScaleSpace	createPaper()	Creates a configuration similar to how it was originally described in the paper
ConfigSiftScaleSpace	setTo(ConfigSiftScaleSpace src)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface boofcv.struct.Configuration

serializeActiveFields, serializeInitialize

Field Details

sigma0

public float sigma0

Amount of blur at the first level in the image pyramid. Paper recommends 1.6, but 2.75 was found to yield better results in a larger test set.

numScales

public int numScales

Number of scales in each octave. The amount of Gaussian blur will double this number of images in the octave. However, the number of actual images computed will be numScales + 3 and the number of difference of Guassian images will be numScales + 2.

firstOctave

public int firstOctave

Specified the first and last octaves. Each octave is a factor of 2 smaller or larger than the input image. The overall size of an octave relative to the input image is pow(2,-octave). For best results sets first octave to -1, but this is very slow so 0 is used instead

lastOctave

public int lastOctave

Specified the first and last octaves. Each octave is a factor of 2 smaller or larger than the input image. The overall size of an octave relative to the input image is pow(2,-octave). For best results sets first octave to -1, but this is very slow so 0 is used instead

Constructor Details

ConfigSiftScaleSpace

public ConfigSiftScaleSpace()

Method Details

createPaper

public static ConfigSiftScaleSpace createPaper()

Creates a configuration similar to how it was originally described in the paper

checkValidity

public void checkValidity()

Description copied from interface: Configuration

Checks to see if the configuration is valid. If it is invalid, throw an exception explaining what is incorrect.

Specified by:

checkValidity in interface Configuration

setTo

public ConfigSiftScaleSpace setTo(ConfigSiftScaleSpace src)