Package cz.fidentis.analyst.landmarks.impl

Class LandmarksDetectorImpl

java.lang.Object

cz.fidentis.analyst.landmarks.impl.LandmarksDetectorImpl

All Implemented Interfaces:

LandmarksDetector

public class LandmarksDetectorImpl
extends Object
implements LandmarksDetector

The implementation of landmarks detector.

Constructor Summary

Constructors

Constructor	Description
LandmarksDetectorImpl(Canvas canvas)	Constructor.

Method Summary

Modifier and Type	Method	Description
List<Landmark>	recognizeFromImage(int minLandmarks)	Detects landmarks from the canvas, usually prepared by the previous call of the LandmarksDetector.zoomAndRenderFace(DrawableFace) method.
List<Landmark>	recognizeFromMultipleAngles(int faceSlot, SymmetryConfig symmetryConfig, int minLandmarks, double cameraRotationAngle)	Detects landmarks of a face.
void	zoomAndRenderFace(DrawableFace face)	Prepares the scene for a single-face snapshot.

Methods inherited from class java.lang.Object

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

Constructor Details

LandmarksDetectorImpl

public LandmarksDetectorImpl(Canvas canvas)

Constructor.

Parameters:

canvas - Canvas with the scene. Must not be null

Method Details

zoomAndRenderFace

public void zoomAndRenderFace(DrawableFace face)

Description copied from interface: LandmarksDetector

Prepares the scene for a single-face snapshot. The scene/canvas is changed! Don't forget to save and recover its state.

Specified by:

zoomAndRenderFace in interface LandmarksDetector

Parameters:

face - Face to be rendered and later analyzed

recognizeFromImage

public List<Landmark> recognizeFromImage(int minLandmarks)

Description copied from interface: LandmarksDetector

Detects landmarks from the canvas, usually prepared by the previous call of the LandmarksDetector.zoomAndRenderFace(DrawableFace) method. It is supposed that only one face is visible.

Specified by:

recognizeFromImage in interface LandmarksDetector

Parameters:

minLandmarks - Minimum required landmarks to be detected.

Returns:

List of 3D landmarks that were detected from the camera view, an empty list if the required number of landmarks was not found.

recognizeFromMultipleAngles

public List<Landmark> recognizeFromMultipleAngles(int faceSlot,
 SymmetryConfig symmetryConfig,
 int minLandmarks,
 double cameraRotationAngle)

Description copied from interface: LandmarksDetector

Detects landmarks of a face. Camera is rotated around the selected face (using its symmetry plane) to capture the face from different angles until the required number of landmarks is recognized. The scene is prepared automatically, i.e., previous calls of LandmarksDetector.zoomAndRenderFace(DrawableFace) has no effect.

Specified by:

recognizeFromMultipleAngles in interface LandmarksDetector

Parameters:

faceSlot - Scene slot of the face that should be recognized

symmetryConfig - Symmetry configuration used to compute the symmetry plane temporarily if the symmetry plane of the face is missing.

minLandmarks - Minimum number of required landmarks

cameraRotationAngle - Angle of camera rotation. If unsure, use 30

Returns:

List of 3D landmarks that were detected from the camera view, an empty list if at least required number of landmarks was not found.