0

我正在研究实时对象检测模块，参考以下存储库：https ://github.com/shaqian/flutter_realtime_detection 。我面临的存储库问题是在某些设备上工作，包括模拟器。因此，为了调试，我试图获取我提供给检测模型的数据，即 img.planes.map((plane){return plane.bytes}).toList(); 并将其转换为图像，以下代码片段是：

List<int> b = [];
if (widget.cameras == null || widget.cameras.length < 1) {
  print('No camera is found');
} else {
  controller = new CameraController(
    widget.cameras[0],
    ResolutionPreset.medium,
  );
  controller.initialize().then((_) {
    if (!mounted) {
      return;
    }

    controller.startImageStream((CameraImage img) async {
      if (!isDetecting) {
        isDetecting = true;
        
          b = img.planes
              .map((plane) {
                return plane.bytes;
              })
              .cast<int>()
              .toList();

图像预览小部件：

Image.memory(
            Uint8List.fromList(b),

在 Image.memory 小部件的地方，我得到：

附图

日志是：

======== Exception caught by image resource service ================================================

解析图像编解码器时引发以下 _Exception：异常：图像数据无效

When the exception was thrown, this was the stack: 
#0      _futurize (dart:ui/painting.dart:5394:5)
#1      ImageDescriptor.encoded (dart:ui/painting.dart:5262:12)
#2      instantiateImageCodec (dart:ui/painting.dart:2048:60)
<asynchronous suspension>

==================================================== ====================================================

Reloaded 1 of 652 libraries in 1,895ms.
W/examplerealtim( 7731): JNI critical lock held for 51.849ms on 
Thread[16,tid=7769,Runnable,Thread*=0xdcf10a10,peer=0x130405e8,"Binder:7731_3"]
W/examplerealtim( 7731): JNI critical lock held for 50.358ms on
Thread[3,tid=7806,Runnable,Thread*=0xdcf04610,peer=0x12d80078,"Binder:7731_5"]

请帮忙。谢谢

4

0 回答 0