I'm playing with the textrecognizer class of Google vision and I'm getting an error about the image format coming from Camera_Preview and
In Camera_Preview (note that there is another builder which isn't used) the error occurs on the last line
Imagedata is set with:
This works and the detector is operational
Error:
In Camera_Preview (note that there is another builder which isn't used) the error occurs on the last line
B4X:
Dim SparseArrayTD As JavaObject = textdetector.RunMethod("detect", Array(frametext))Imagedata is set with:
B4X:
frameBuildertext.RunMethod("setImageData", Array(bbtext, cs.Width, cs.Height, 842094169))
B4X:
Sub Camera1_Preview (data() As Byte)
If DateTime.Now > LastPreview + IntervalBetweenPreviewsMs Then
'Dim n As Long = DateTime.Now
cvs.ClearRect(cvs.TargetRect)
Dim frameBuilder,frameBuildertext As JavaObject
Dim bb As JavaObject
bb = bb.InitializeStatic("java.nio.ByteBuffer").RunMethod("wrap", Array(data))
frameBuilder.InitializeNewInstance("com/google/android/gms/vision/Frame.Builder".Replace("/", "."), Null)
frameBuildertext.InitializeNewInstance("com/google/android/gms/vision/Frame.Builder".Replace("/", "."), Null)
Dim cs As CameraSize = camEx.GetPreviewSize
frameBuilder.RunMethod("setImageData", Array(bb, cs.Width, cs.Height, 842094169))
Dim bbtext As JavaObject
bbtext = bbtext.InitializeStatic("java.nio.ByteBuffer").RunMethod("wrap", Array(data))
frameBuildertext.RunMethod("setImageData", Array(bbtext, cs.Width, cs.Height, 842094169))
Dim frame As JavaObject = frameBuilder.RunMethod("build", Null)
Dim frametext As JavaObject = frameBuildertext.RunMethod("build", Null) 'works
Dim SparseArray As JavaObject = detector.RunMethod("detect", Array(frame))
Dim SparseArrayTD As JavaObject = textdetector.RunMethod("detect", Array(frametext))
...This works and the detector is operational
B4X:
Private Sub CreateTextDetector
Dim ctxt As JavaObject
ctxt.InitializeContext
Dim builder As JavaObject
builder.InitializeNewInstance("com.google.android.gms.vision.text/TextRecognizer.Builder".Replace("/", "."), Array(ctxt))
Dim barcodeClass As String = "com.google.android.gms.vision.text.TextRecognizer".Replace("/", ".")
Dim barcodeStatic As JavaObject
barcodeStatic.InitializeStatic(barcodeClass)
textdetector = builder.RunMethod("build", Null)
Dim operational As Boolean = textdetector.RunMethod("isOperational", Null)
Log("Is detector operational: " & operational)
End SubError:
B4X:
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:132)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:348)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:1082)
at anywheresoftware.b4a.keywords.Common.CallSubNew2(Common.java:1037)
at de.matle.backupmaster.cameraexclass._camera_preview(cameraexclass.java:194)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
at anywheresoftware.b4a.objects.CameraW$2$1$1.onPreviewFrame(CameraW.java:147)
at android.hardware.Camera$EventHandler.handleMessage(Camera.java:1315)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7560)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: java.lang.IllegalArgumentException: only support ImageFormat.NV21 and ImageFormat.YUY2 for now
at android.graphics.YuvImage.<init>(YuvImage.java:82)
at com.google.android.gms.vision.text.TextRecognizer.detect(com.google.android.gms:play-services-vision@@20.1.3:22)
... 26 more