flutter ui.Image memory

void setPixelColor(List<Offset> points, double brushSize, Color color) {         ui.PictureRecorder recorder = ui.PictureRecorder();     ui.Canvas canvas = ui.Canvas(recorder); canvas.drawImage(layers[currentEditLayout].uiImage!, Offset.zero, Paint());    canvas.drawPoints(        ui.PointMode.points,        points,        Paint()          ..color = color          ..strokeWidth = 1);    ui.Picture picture = recorder.endRecording();    layers[currentEditLayout].uiImage!.dispose();    layers[currentEditLayout].uiImage = null;    layers[currentEditLayout].uiImage = picture.toImageSync(canvasSize.width.toInt(),canvasSize.height.toInt());    picture.dispose();}

I tried to run this function inside a for loop, but the memory was growing badly. I expect stable running memory