Converting Bayer image to RGB

If you are new with Bayer images, start reading theses articles:

• Color Filter Array Interpolation,
• Demosaicing at Wikipedia,
• Digital camera sensors,
  
• A study of spatial color interpolation algorithms for single-detector digital cameras by Ting Chen,

Sample code run all the demosaicing algorithms implemented by the elynx SDK:

void convertBayer(const ImageVariant& iImage, const char * iprName)
{
  // process all methods
  for (int i=0; i<int(BCC_Max); i++)
  {
    ImageVariant image(iImage);

    EBayerToColorConversion method = (EBayerToColorConversion)i;
    const char * prMethodName = elxToString(method);
    
    // convert Bayer image to RGB
    image.ChangeToColor(method);

    // let's see more details zooming
    image.Zoom(2);

    // change resolution to UINT8 before saving
    image.ChangeResolution(RT_UINT8);

    // save
    char filename[elxPATH_MAX];
    ::sprintf(filename, "output/%s-%s.png", iprName, prMethodName);
    image.Save(filename); 
  }
}

ImageVariant image("../../datas/docRef/lighthouse.png");
uint32 x=230, y=430, w=200, h=128;
bool bSuccess = image.Crop(x,y, w,h);

image.ChangeToBayer(BM_RGGB);
convertBayer(image, "B1");

Output:
You can follow the link for each samples to get the implementation algorithm documentation.

Nearest	Bilinear
Malvar He Cutler	Bicubic
David Cok	Freeman
Adaptive	Laroche Prescott
Hamilton	Hamilton Adams
Adams	Wang Lin Xue
Kimmel	Lukin Kubasov
Chuan Lin	Wemmiao Lu
Pattern Recognition Interpolation	Pattern Matching Interpolation
Variable Number of Gradients	Adaptive homogeneity-directed
Chang Tan	raw Bayer (no interpolation)