jni - Underlying technique of Android's FaceDetector -

-

I am implementing a face tracker on Android, and as a literature study, the built-in technology of the Android Chev Detector I would like to recognize

Simply put it in words: I want to understand how android.media.facedetector classifier works.

A brief Google search did not generate anything informative, so I thought I would take a look at the code.

By looking at the Java source code, it can not be learned: FaceDetector is only a square that the image dimension and the number of faces are provided, then returns an array of faces .

The Android source I have followed through the function call, where, barely shortened, I learned:

  1. "FaceFinder" has been created
  2. On line 90, bbs_MemSeg_alloc returns an btk_HFaceFinder object (in which the function actually receives the face), essentially it is hsdkA-> gt; ; ContextE.memTblE.espArrE copies the original array btk_HSDK object () () btk_SDK_create ()
  3. It appears that a maze of tasks provides with each other's hints and examples BTK_HSDK , but I have anywhere sdk-> References can get a concrete connotation of EMTBlie.ESPARRE [0] which preserves magic in estimation.

What I am is , this is a small clue: JNI code refers to an FFTM library for which I can not get the source code . About this, however, FFT is Fast Fourier Transform , which is possibly used with pre-trained neural networks. The only literature I can find is that this principle is aligned with

I also do not know the truth whether I am on the right path, so any suggestions will definitely help.

Edit: I've added a +100 reward for someone who can give insight.

I am on a phone, so can not respond heavily, but the Google keyword "neven visual Algorithm "Drag some useful papers ...

In addition, the US Patent 6222939 is related.

Perhaps some links may be easy ...


Comments

Post a Comment

Popular posts from this blog

c# - sqlDecimal to decimal clr stored procedure Unable to cast object of type 'System.Data.SqlTypes.SqlDecimal' to type 'System.IConvertible' -

-
I'm new to this I'm writing a clr. stored procedure that can be used to get values ​​used in a calculation Call for another stored procedure for Gives an archived methodology int (I think SqlInt32? Value of the table's value is int) which is then necessary to convert to decimal. Here I have the code: Public static integral mood (SQL MDMMYLUE, escalistering AMY type, out of SQLDCM Result) {aResult = 0; Try {SqlConnection conn = New SqlConnection ("Reference Connection = True"); SqlCommand cmd = New SqlCommand ("sp_GetType", conn); Cmd.Parameters.AddWithValue ("@ myValueType", aMyValueType); Cmd.CommandType = CommandType.StoredProcedure; Conn.Open (); Object type = CMD. Exclamation Asser (); Conn.Close (); Decimal type FORCalculation = Convert. ToDecimal (type); Decimal value = convert toDecimal (aMyValue); // ** calculation calc = new calculation (); Decimal result = calorie.docalulation (typefarculation, value); I get an exception...
Read more

Calling GetGUIThreadInfo from Outlook VBA -

-
I need to find the active window'm writing a VBA macro in MS Outlook, which is a specific process. The goal of this is to get the active window / document name even if its original application has more than one document interface. User processor with GetCurrentThreadId is active, I am using GetGUIThreadInfo to get .dll. Here is the correct code: private type RECT as as Left LongPtr top LongPtr right LongPtr down LongPtr termination of private type GUITHREADINFO cbSize as LongPtr flags LongPtr hwndActive LongPtr hwndFocus LongPtr hwndCapture LongPtr as as as as as reset as LongPtr rcCaret as LongPtr hwndCreate as LongPtr hwndMoveSize as HwndMenuOwner end of Private Equity PtrSafe function GetWindowThreadProcessId Lib "user32" (_BVV hnw LongPtr as LongPtr Nig Mr. announced as PtrSafe function GetGUIThreadInfo Lib "user32" _ (ByVal dwthreadid as LongPtr, _ lpguithreadinfo as GUITHREADINFO) LongPtr Sub MyFunction () as dim strWindowTitle string = space as s...
Read more

Obfuscating Python code? -

-
I'm looking for a way to hide my Python source code. print "Hello World!" How can I encode this example so that it is not human-readable? I have been asked to use Base 64 but I'm not sure how. itemprop = "text"> It is limited only, first level ambiguous resolution, but has built-in: byte-code in Python Is a compiler for: dragon-o-m py_compile & lt; Your program.py & gt; creates a .pyo file with a byte-code, and where the docstrings are removed, etc. You can rename .pyo with the .py extension, and python & lt; Your program.py & gt; runs as your program, but it does not have your source code. PS : If your program blur modules like this, you need to rename them with the .pyc suffix (I Not sure it will not break a day), or you can work with .pyo and run them with python -o ... .pyo ( Import should work). This will allow dragon to search your modules (otherwise, Python looks for the .py module).
Read more