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ofxObjectSurfer

Introduction

Analyze video grabber frames (or a loaded image) for SURF keypoints. Draw a lasso around the keypoints you would like to use in a detector. Then save object descriptor files. Later, load descriptor files and detect objects in new images.

  • Choose an object that generates lots of features. Textures, patterns and text are good candidates for feature detection.

Find Features

  • Circles show the rough size of each detected feature. Gray features are the weakest and white are the strongest. The more good features, the better a detector.

Find Features

  • Draw a polygon around the features you want a detector to use.

Find Features

  • Save the object descriptors to a YML file. After saving, and whenever you load the descriptor file, the detector will try to find your object in the latest frame.

Find Features

Dependencies

ofxOpenCV

Compatibility

0.8.0+

Known issues

Version history

This addon is under development, but can be used as-is.

About

An addon for capturing sets of keypoints and descriptors and then finding one or more objects in an image.

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