Woop Woop

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "reprecord-app",
+            "request": "launch",
+            "type": "dart"
+        },
+        {
+            "name": "reprecord-app (profile mode)",
+            "request": "launch",
+            "type": "dart",
+            "flutterMode": "profile"
+        }
+    ]
+}

lib/main.dart

@@ -1,10 +1,13 @@
 import 'dart:async';
 import 'dart:ffi';
-import 'package:camera/camera.dart';
+import 'dart:ui';
 import 'dart:typed_data';
-
+import 'dart:math';
 import 'package:flutter/material.dart';
 
+import 'package:camera/camera.dart';
+import 'package:image/image.dart' as img;
+
 List<CameraDescription> cameras = [];
 
 Future<void> main() async {
@@ -26,16 +29,16 @@ class _CameraAppState extends State<CameraApp> {
   var image_height = 0;
   var posy = 0.0;
   var posx = 0.0;
-  var count = 0.0;
+  var count = 0;
-  static const alpha = 0.99;
+  var frameNumber = 0;
-  static const thresh = 25;
+  static const alpha = 0.90;
-  Uint8List? previousImage;
+  static const thresh = 50;
-  Uint8List? diff;
-  Uint8List? dst;
-  Uint64List? diffValues;
-  Float32List? background;
-  Float64List? diffWeightsX;
 
+  var previousImage = <int>[];
+  var gray = <int>[];
+  var diff = <int>[];
+  var dst = <int>[];
+  var background = <double>[];
 
   @override
   void initState() {
@@ -67,8 +70,15 @@ class _CameraAppState extends State<CameraApp> {
         appBar: AppBar(
           title: const Text('Home'),
         ),
-        body: Column(children: <Widget>[
+        body: Stack(children: <Widget>[
-          CameraPreview(cameraController),
+          diffView(),
+          Container(
+            height: image_height.toDouble(),
+            width: image_width.toDouble(),
+            child: CustomPaint(
+              painter: OpenPainter(posx, posy),
+            ),
+          ),
         ]),
         floatingActionButton: FloatingActionButton(
           child: const Icon(Icons.plus_one),
@@ -81,6 +91,17 @@ class _CameraAppState extends State<CameraApp> {
     );
   }
 
+  Widget diffView() {
+    return Transform.rotate(
+      angle: 0.0, //pi * -0.5
+      child: diff.isEmpty
+          ? Container()
+          : Image.memory(Uint8List.fromList(img.encodeJpg((img.Image.fromBytes(
+              image_width, image_height, diff,
+              format: img.Format.luminance))))),
+    );
+  }
+
   void startStream() {
     final CameraController? cameraController = controller;
 
@@ -99,56 +120,62 @@ class _CameraAppState extends State<CameraApp> {
     });
   }
 
-  void handleImage(CameraImage src) {
+  void handleImage(CameraImage src) async {
-    diffWeightsX = Float64List(src.width);
+    if (previousImage.isEmpty) {
-    diffValues = Uint64List(src.width);
+      previousImage = List.filled(src.planes[0].bytes.length, 0);
+      gray = List.filled(src.planes[0].bytes.length, 0);
+      diff = List.filled(src.planes[0].bytes.length, 0);
+      dst = List.filled(src.planes[0].bytes.length, 0);
+      background = List.filled(src.planes[0].bytes.length, 0.0);
 
-    if (previousImage == null || background == null) {
-      previousImage = Uint8List(src.planes[0].bytes.length);
-      dst = Uint8List(src.planes[0].bytes.length);
-      diff = Uint8List(src.planes[0].bytes.length);
-      background = Float32List(src.planes[0].bytes.length);
       image_width = src.width;
       image_height = src.height;
     } else {
-      for (var i = 0; i < image_height; i++) {
+      if (frameNumber % 10 == 0) {
-        for (var j = 0; j < image_width; j++) {
+        gray = src.planes[0].bytes;
-          //Background calculation
-          background![i + j] = (background![i + j] * alpha +
-              src.planes[0].bytes[i + j].toDouble() * (1.0 - alpha));
 
-          //Difference calculation
+        count = 0;
-          diff![i + j] =  (background![i + j].toInt() - src.planes[0].bytes[i + j]).abs();
+        var xVal = 0.0;
-          if(diff![i + j] > thresh) {
+        var yVal = 0.0;
-            diffWeightsX![i] += diff![i + j] * j;
-            diffValues![i] += diff![i + j];
-          }
-        }
-      }
-      // Processing
 
-      //Average X Position
+        for (var i = 0; i < gray.length; i++) {
-      posx = 0;
+          background[i] = background[i] * alpha + gray[i] * (1.0 - alpha);
-      posy = 0;
+          diff[i] = (gray[i] - background[i].toInt()).abs();
-      var currentCount = 0;
+          dst[i] = background[i].toInt();
-      var weightsY = 0;
+          if (diff[i] < thresh) {
-      for(var i = 0; i < diffWeightsX!.length; i++){
+            diff[i] = 0;
-        if(diffValues![i] > 0){
+          } else {
-          posx += (diffWeightsX![i]/diffValues![i])/diffWeightsX!.length;
+            //diff[i] = 255;
-          weightsY += diffValues![i] * i;
+            xVal += diff[i] * ((i % image_width) + 1);
-          currentCount += diffValues![i];
+            yVal += diff[i] * ((i % image_height) + 1);
+            count += diff[i];
           }
         }
 
-      if(currentCount > 0) {
-        posy = weightsY/currentCount;
-      }
-      
-      count = count * alpha +  (currentCount/(image_width * image_height * 255) * 100.0) * (1.0 - alpha);
-      print(count);
-
         // End Processing
-      previousImage = src.planes[0].bytes;
+        previousImage = gray.toList();
+        if (count != 0) {
+          posx = xVal / count;
+          posy = yVal / count;
+          print("$count ${posx.toInt()} ${posy.toInt()}");
+        }
+        setState(() {});
+      }
+      frameNumber += 1;
     }
   }
 }
+
+class OpenPainter extends CustomPainter {
+  double posx;
+  double posy;
+  OpenPainter(this.posx, this.posy);
+  @override
+  void paint(Canvas canvas, Size size) {
+    canvas.drawCircle(Offset(posx, posy), 10,
+        Paint()..color = Color.fromARGB(255, 0, 255, 0));
+  }
+
+  @override
+  bool shouldRepaint(CustomPainter oldDelegate) => true;
+}

pubspec.lock

@@ -1,6 +1,13 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.6"
   async:
     dependency: transitive
     description:
@@ -71,6 +78,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.3.2"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
   fake_async:
     dependency: transitive
     description:
@@ -107,6 +121,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  image:
+    dependency: "direct main"
+    description:
+      name: image
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.8"
   js:
     dependency: transitive
     description:
@@ -149,6 +170,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.11.1"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.4.0"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -231,6 +259,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.3.1"
 sdks:
   dart: ">=2.14.0 <3.0.0"
   flutter: ">=2.5.0"

pubspec.yaml

@@ -11,6 +11,7 @@ dependencies:
   camera: ^0.9.4+3
   flutter:
     sdk: flutter
+  image: ^3.0.8
 
 dev_dependencies:
   flutter_test: