Code Generation, Image processing, Blank Output

Question: We have a prototype image processing project in Matlab and want to "port" it to Jetson TX1. The "imgaborfilt" works differently than the OpenCV gabor filter, so I want to generate only "imgaborfilt" into c++ so that we can have the same result. Is this possible? To get the Matlab implementation into C++, without having to digg/research and implement it myself.

Effort level: I've spent 30+ hours reading documentation and countless blog posts / forum

Goal: Use Matlab coder to generate C++ files(Tried dynamic DLL, static lib and source code) from Very Simple Matlab Functions and use them in conjunction with OpenCV functions and Mat containers.

Problem: I tried generating edge('Sobel'), rgb2gray and imgaborfilt. When I use the generated function the image always comes out Blank (Only black pixels) as If the function does nothing.

Setup: Visual studio 2015, Matlab 2017a, OpenCV3.2. All verified and working.

Very Simple Matlab Functions to be generated example:

if true
  % code
function BW = Only_Sobel(I,tresh) %#codegen
method = 'Sobel';
direction = 'vertical';
BW = edge(I, method, tresh, direction);

end

The exerciser script:

if true
  % code
I = imread('Pall.png');
I = im2double(I);
Gray = rgb2gray(I);
tresh = 1;
BW = manual_sobel(Gray,tresh);
figure
imshow(BW);

end

Visual code:

if true
  % code
  static unsigned char uv0[88350];
  static boolean_T BW[88350];
  Mat image;         
  VideoCapture cap;          
  cap.open(0);
  namedWindow("Large Window", 1);                             
  namedWindow("HorzEdgeDetect", 1);
  namedWindow("final_result",1);
  //Mat pall(155,570,DataType<uchar>::type);
  int size[2] = { 570, 155 };
  //    Mat test(3, size, DataType<uchar>::type);
  Mat pall;
  pall = imread("Pall.png", 1);
  // The pall.png image is 155x570 pixels 
  int width = 570;
  int height = 155;
  cvtColor(pall, pall, COLOR_BGR2GRAY);
  //Generated function for image container
  argInit_155x570_uint8_T(uv0);
  argInit_155x570_uint8_T(BW);
  //Transfer the image to the generated image container used by the generated code
  int ii, jj;
  for (ii = 0; ii < width; ii++)
    for (jj = 0; jj < height; jj++)
      uv0[ii * height + jj] = (real_T)(pall.data[ii + width * jj]);
  imshow("HorzEdgeDetect", pall);
    //DEBUG, send the data back into "Mat pall" och verify
  for (ii = 0; ii < width; ii++)
    for (jj = 0; jj < height; jj++)
      pall.data[ii + width * jj] = (uchar)uv0[ii * height + jj];
  imshow("Large Window", pall);
  //double tresh = 55;
  double tresh = 0.015;
  Only_Sobel(uv0, tresh, BW);
  Mat image_sobel;
  image_sobel = pall;
  //Get the data into MAT container for display
  for (ii = 0; ii < width; ii++)
    for (jj = 0; jj < height; jj++)
      image_sobel.data[ii + width * jj] = (uchar)BW[ii * height + jj];
  //Display results
  imshow("final_result", image_sobel);
  while (1) {
    cap >> image;          //copy webcam stream to image
  //  imshow("Large Window", image);          //print image to screen
    waitKey(33);          //delay 33ms
  }

end