HarmonyOS 相机双路预览获取图片转换后进行文字识别问题

if (imgComponent.byteBuffer as ArrayBuffer) { 
  //SourceOptions自定义属性，sourceDensity：ImageSource的密度，  sourcePixelFormat：图片像素格式，sourceSize：图像像素大小 
  let sourceOptions : image.SourceOptions = { sourceDensity: 120, sourcePixelFormat: 8} 
  // 转换arrayBuffer 
  let imageResource=image.createImageSource(imgComponent.byteBuffer,sourceOptions) 
  let decodingOptions: image.DecodingOptions = { editable: true, desiredPixelFormat: 3, } 
  //注意创建imageSource的SourceOptions 
  let pixma=await imageResource.createPixelMap(decodingOptions) 
}