本人博客转载去标明原文
前言 午后略困，倒杯咖啡，把之前挖的坑补上，今天来说一说arcore,arcore是google提供的一个增强现实的服务ARCore官网
注意 该服务虽然好用，功能强大，但是对于我大天朝来说，需要点要求
使用 在项目的build.gradle中确保repositories中有google在
1 2 3 repositories { google () }
然后在app的build中引用arcore 我这里用的是1.15.0版本，
1 2 3 4 5 6 implementation 'com.google.ar:core:1.15.0' implementation 'com.google.ar.sceneform.ux:sceneform-ux:1.15.0' implementation 'com.google.ar.sceneform:core:1.15.0'
扩展ArFragment 要实现人脸增强，我们需要扩展Arfragment更改相机，以及session
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 /** public class FaceArFragment extends ArFragment { @Override protected Config getSessionConfiguration(Session session) { Config config = new Config(session); config.setAugmentedFaceMode(AugmentedFaceMode.MESH3D); return config; } @Override protected Set <Session.Feature> getSessionFeatures() { return EnumSet.of(Session.Feature.FRONT_CAMERA); } @Override protected void handleSessionException(UnavailableException sessionException) { String message ; if (sessionException instanceof UnavailableArcoreNotInstalledException) { message = "请安装ARCore" ; } else if (sessionException instanceof UnavailableApkTooOldException) { message = "请升级ARCore" ; } else if (sessionException instanceof UnavailableSdkTooOldException) { message = "请升级app" ; } else if (sessionException instanceof UnavailableDeviceNotCompatibleException) { message = "当前设备部不支持AR" ; } else { message = "未能创建AR会话,请查看机型适配,arcore版本与系统版本" ; String var3 = String .valueOf(sessionException); } Toast.makeText(getContext(),"==" + message ,Toast.LENGTH_LONG).show(); } /** * Override to turn off planeDiscoveryController. Plane trackables are not supported with the * front camera. */ @Override public View onCreateView( LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { FrameLayout frameLayout = (FrameLayout) super.onCreateView(inflater, container, savedInstanceState); getPlaneDiscoveryController().hide(); getPlaneDiscoveryController().setInstructionView(null); return frameLayout; } }
然后自己的布局：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".AugmentedFacesActivity" > <fragment android:name ="com.google.ar.sceneform.samples.augmentedfaces.FaceArFragment" android:id ="@+id/face_fragment" android:layout_width="match_parent" android:layout_height="match_parent" /> <TextView android:id ="@+id/mTv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text ="@string/app_name" /> </FrameLayout>
设置人脸face—mesh—ModelRenderable和faceMeshTexture
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 private ModelRenderable faceRegionsRenderable; private Texture faceMeshTexture; ModelRenderable.builder() .setSource (this, R.raw.fox_face) .build () .thenAccept ( modelRenderable -> { faceRegionsRenderable = modelRenderable; modelRenderable.setShadowCaster(false) ; modelRenderable.set ShadowReceiver(false) ; }); // Load the face mesh texture. Texture.builder() .setSource (this, R.drawable.fox_face_mesh_texture) .build () .thenAccept (texture -> faceMeshTexture = texture) ; ArSceneView sceneView = arFragment.getArSceneView() ;
然后对Arfragment的代码 其中包括算精确距离的方法
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 sceneView.setCameraStreamRenderPriority(Renderable.RENDER_PRIORITY_FIRST); Scene scene = sceneView.getScene(); scene.addOnUpdateListener( (FrameTime frameTime) -> { if (faceRegionsRenderable == null || faceMeshTexture == null ) { return ; } Collection<AugmentedFace> faceList = sceneView.getSession().getAllTrackables(AugmentedFace.class ); // Make new AugmentedFaceNodes for any new faces. for (AugmentedFace face : faceList) { if (!faceNodeMap.containsKey(face)) { AugmentedFaceNode faceNode = new AugmentedFaceNode(face); faceNode.setParent(scene); faceNode.setFaceRegionsRenderable(faceRegionsRenderable); faceNode.setFaceMeshTexture(faceMeshTexture); faceNodeMap.put(face, faceNode); } } // Remove any AugmentedFaceNodes associated with an AugmentedFace that stopped tracking. Iterator<Map.Entry<AugmentedFace, AugmentedFaceNode>> iter = faceNodeMap.entrySet().iterator(); while (iter.hasNext()) { Map.Entry<AugmentedFace, AugmentedFaceNode> entry = iter.next(); AugmentedFace face = entry.getKey(); Pose left = face.getRegionPose(AugmentedFace.RegionType.FOREHEAD_LEFT); Pose right = face.getRegionPose(AugmentedFace.RegionType.FOREHEAD_RIGHT); // face.getm // AugmentedFace node // face.createAnchor(left); // face.createAnchor(right); float lx = left.tx(); float ly = left.ty(); float lz = left.tz(); float rx = right.tx(); float ry = right.ty(); float rz = right.tz(); double llength = Math.sqrt(lx * lx + ly * ly + lz * lz); double rlength = Math.sqrt(rx * rx + ry * ry + rz * rz); BigDecimal b1 = new BigDecimal(llength); BigDecimal r1 = new BigDecimal(rlength); double spec = b1.add (r1).divide(new BigDecimal("2")).multiply(new BigDecimal("100")).floatValue(); Log .d("wzz","-----" + llength + "----" + rlength); Log .d("wzz","-----" + b1.add (r1).divide(new BigDecimal("2"))); Log .d("wzz","-----" + decimalFormat.format((b1.add (r1).divide(new BigDecimal("2")))) + "m"); mTv.setText("到屏幕距离： " + decimalFormat.format(spec) + "cm"); if (face.getTrackingState() == TrackingState.STOPPED) { drawLine(face.createAnchor(left),face.createAnchor(right)); AugmentedFaceNode faceNode = entry.getValue(); faceNode.setParent(null ); iter.remove(); } } });
好了到这就可以实现了，是不是贼简单，
