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IPCV - Image Processing and Computer Vision Toolbox for Scilab >> Feature Detection, Description and Matching > imdetect_STAR

imdetect_STAR

Detect features from an image with STAR algorithm

Syntax

fobj = imdetect_STAR(im [,maxSize [,responseThreshold [,lineThresholdProjected [,lineThresholdBinarized [,suppressNonmaxSize]]]]]);

Parameters

im :

Input image

maxSize :

Maximum size of the features. Default value is 16.

responseThreshold :

Response threshold. Default value is 30.

lineThresholdProjected :

Default value is 10.

lineThresholdBinarized :

Default value is 8.

suppressNonmaxSize :

Default value is 5.

fobj :

Features object contains following fields -

type :

Type of features

n :

Numbers of detected features

x :

Coordinates of the detected features - X

y :

Coordinates of the detected features - Y

size :

Size of detected features

angle :

keypoint orientation

response :

The response by which the most strong keypoints have been selected.

octave :

pyramid octave in which the keypoint has been detected

class_id :

object id

Description

This function used to detect the features of an image using STAR method

Examples

S = imcreatechecker(8,8,[1 0.5]);
fobj = imdetect_STAR(S);
imshow(S); plotfeature(fobj);

See also

Authors

Bibliography

1. OpenCV 2.4 Online Documentation


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