Get image pixels Values in ITK

typedef float       OutputPixelType;
typedef itk::Image< OutputPixelType, 2 >    OutputImageType;
void ClassName::printImagePixel2D(int x,int y, OutputImageType::Pointer image)
{

    // Access to a pixel
    OutputImageType::IndexType pixelIndex;
    pixelIndex[0] =x;
    pixelIndex[1] =y;
    OutputImageType::PixelType pixelValue = image->GetPixel(pixelIndex);
    std::cout << "pixel : " << pixelValue << std::endl;
  
}