public static ImageData GetImageData(Bitmap img)
{
ImageData imgData = new ImageData();
using (Bitmap resized = Resize(img))
{
float[] cedd = Features.calculateCEDD(img); // size 144
float[] fcth = Features.calculateFCTH(img); // size 192
float[] jcd = Features.calculateJCD(cedd, fcth); // size 168
imgData.CEDD = cedd;
imgData.FCTH = fcth;
imgData.JCD = jcd;
// Change the feature to be used in SOM here.
// Important!!! Also need to adject SOM constants in SOMSetting.cs (especially NUM_WEIGHTS)
imgData.inputVector.weights = jcd;
}
return imgData;
}
public static ImageData GetImageData_Old(Bitmap img)
{
ImageData result = new ImageData();
BitmapData imgData = img.LockBits( new Rectangle( 0, 0, img.Width, img.Height ), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb );
Features.rgbColor[,] imgArray = new Features.rgbColor[imgData.Height, imgData.Width];
unsafe
{
byte* imgPtr = (byte*)(imgData.Scan0);
for (int i = 0; i < imgData.Height; ++i)
{
for (int j = 0; j < imgData.Width; ++j)
{
imgArray[i, j].b = (float)*imgPtr;
++imgPtr;
imgArray[i, j].g = (int)*imgPtr;
++imgPtr;
imgArray[i, j].r = (int)*imgPtr;
++imgPtr;
}
imgPtr += imgData.Stride - imgData.Width * 3;
}
} // End unsafe code.
// Needed or else RELEASE build will crash! eep!
img.UnlockBits(imgData);
float[] histogramVector, areaVector;
histogramVector = result.m_vectorHistogram = Features.calculateInputVector_Histogram(imgArray, imgData.Height, imgData.Width);
areaVector = result.m_vectorArea = Features.calculateInputVector_Area(imgArray, imgData.Height, imgData.Width);
System.Diagnostics.Debug.Assert(histogramVector.Length + areaVector.Length == SOMConstants.NUM_WEIGHTS);
// Pack all vectors into the single vector.
for (int i = 0, j = 0; i < SOMConstants.NUM_WEIGHTS; ++i)
{
if (i < histogramVector.Length)
{
result.inputVector.weights[i] = histogramVector[i];
}
else if (j < areaVector.Length)
{
result.inputVector.weights[i] = areaVector[j];
++j;
}
}
return result;
}
public void AddImage(ImageData imageData)
{
_imageDataList.Add(imageData);
}