我正在使用谷歌ml工具包进行人脸检测,然后使用边框功能来裁剪人脸。我成功地集成了摄像头,然后想添加从图库中选择功能,我成功地实现了以前用Java编写的培训应用程序,但我可以找到为什么用Kotlin编写的应用程序无法从图库中识别图像URI。
我尝试了多种方法InputImage.fromBirmap(),InputImage.fromFilePath()和InputImage.fromByteArray(“use nv21”),并使用Image View来显示旋转Angular 看起来很完美的图像。你可以找到下面的代码,除了InputImage.fromFilePath()和InputImage.fromByteArray(“use nv21”),它们是第一个尝试的,然后删除代码。也谢谢你。
private fun selectImage() {
val intent = Intent()
intent.type = "image/*"
intent.action = Intent.ACTION_GET_CONTENT
startActivityForResult(Intent.createChooser(intent, "Select Picture"), 11)
}
@RequiresApi(Build.VERSION_CODES.N)
@Deprecated("Deprecated in Java")
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (resultCode == RESULT_OK) {
if (requestCode == 11) {
if (data != null){
val bitmap = getBitmapFromUri(data.data!!)
Log.d(TAG, "onActivityResult: ${data.data!!}")
val inputStream = contentResolver.openInputStream(data.data!!)
val exif = ExifInterface(inputStream!!)
val rotation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL
)
val rotationInDegrees: Int = exifToDegrees(rotation)
inputStream.close()
Log.d(TAG, "onActivityResult: rotation: $rotation")
if (bitmap != null) selectedImageAnalyser(bitmap, rotationInDegrees)
}
}
}
}
private fun exifToDegrees(exifOrientation: Int): Int {
return when (exifOrientation) {
ExifInterface.ORIENTATION_ROTATE_90 -> {
90
}
ExifInterface.ORIENTATION_ROTATE_180 -> {
180
}
ExifInterface.ORIENTATION_ROTATE_270 -> {
270
}
else -> 0
}
}
private fun getBitmapFromUri(uri: Uri): Bitmap? {
var bitmap: Bitmap? = null
try {
bitmap = if (Build.VERSION.SDK_INT > Build.VERSION_CODES.O_MR1) {
val source = ImageDecoder.createSource(
contentResolver, uri
)
ImageDecoder.decodeBitmap(source)
} else {
MediaStore.Images.Media.getBitmap(contentResolver, uri)
}
} catch (e: IOException) {
e.printStackTrace()
}
return bitmap
}
private fun selectedImageAnalyser(bitmap: Bitmap, rotationDegree: Int) {
val mBitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true)
val inputImage = InputImage.fromBitmap(mBitmap, rotationDegree)
val rotation = inputImage.rotationDegrees
Log.d(TAG, "onActivityResult: rotation: $rotation")
binding!!.ivFace.apply {
visibility = View.VISIBLE
setImageBitmap(inputImage.bitmapInternal)
}
faceDetector.process(inputImage)
.addOnSuccessListener { faces ->
if (faces.isNullOrEmpty()){
val croppedFace = cropToBox(bitmap,faces[0].boundingBox,rotation)
startEnrollDialog(croppedFace)
} else{
Log.d(TAG, "selectedImageAnalyser: face can not identified")
}
}
.addOnFailureListener { Log.d(TAG, "selectedImageAnalyser: \n\t Cause: ${it.cause} \n\t Message: ${it.message}") }
.addOnCompleteListener { }
}
1条答案
按热度按时间wydwbb8l1#
问题是由if块引起的,它看起来像“if(faces.isNullOrEmpty())"。你发现错误了吗,是的,我忘记添加'!'了。
浪费您的时间,请接受我最诚挚的歉意。