//将原始矩阵元素拆分为3份，分别为m0,m1,m2
public static void Decompose3(ImageCore img, out BmpGray8 r, out BmpGray8 g, out BmpGray8 b)
{
if (img.ElementSize % 3 != 0)
{
throw new Exception("Source Mat NOT 3 Channel");
}
r = new BmpGray8(img.Width, img.Height);
r.InitMemory();
g = new BmpGray8(img.Width, img.Height);
g.InitMemory();
b = new BmpGray8(img.Width, img.Height);
b.InitMemory();
T * src = (T *)img.Scan0.ToPointer();
T * p0 = (T *)r.Scan0.ToPointer();
T * p1 = (T *)g.Scan0.ToPointer();
T * p2 = (T *)b.Scan0.ToPointer();
int loopCount = r.Count;
T * p = (T *)img.Scan0.ToPointer();
while (--loopCount > -1)
{
*p2++ = *p++;
*p1++ = *p++;
*p0++ = *p++;
}
}
public static void Threshold(ImageCore grayImage, out RLC_NodeList <byte> list, byte min, byte max)
{
int loopCount = grayImage.Count;
byte *gp = (byte *)grayImage.Scan0.ToPointer();
list = new RLC_NodeList <byte>();
int idx = -1;
while (++idx < grayImage.Count)
{
if (*gp >= min && *gp <= max)
{
if (list.IsEmpty)
{
RLC_Node <byte> head = new RLC_Node <byte>();
head.data = new RLC_Data <byte>();
head.data.Data = 0xff;
head.data.Length = 1;
head.data.Index = idx;
list.Append(head);
}
else
{
list.PushBack(0xff, idx);
}
}
gp++;
}
}
//填充内存
public static void Fill(ImageCore img, T val)
{
int loopCount = img.Count;//元素个数
T * p = (T *)img.Scan0.ToPointer();
while (--loopCount > -1)
{
*p = val;
p += img.ElementSize;
}
}
//对矩阵元素值的缩放，leftMove 代表原始值放大2^leftMove次方，rightMove代表值缩小2^righMove次方
//cellVal = (cellVal * 2^leftMove) / 2^righMove + add;
public static void ScalaMat(ImageCore img, int leftMove, int rightMove, int add)
{
int loopCount = img.Count;
byte *p = (byte *)img.Scan0.ToPointer();
Int64 tempVal = 0;
while (--loopCount > -1)
{
tempVal = (*p << leftMove) >> rightMove + add;
*p = tempVal < 256?(byte)tempVal:255;
p += img.ElementSize;
}
}
public static void Threshold(ImageCore grayImage, out BmpGray8 region, byte min, byte max)
{
region = new BmpGray8(grayImage.Width, grayImage.Height);
region.InitMemory();
int loopCount = grayImage.Count;
byte *gp = (byte *)grayImage.Scan0.ToPointer();
byte *rp = (byte *)region.Scan0.ToPointer();
while (--loopCount > -1)
{
*rp++ = *gp >= min && *gp <= max?255:0;
gp++;
}
}
//将非托管类型转为指定类型指针，*T+=idx
public static ref T GetElement(ImageCore img, int idx)
{
T *p = (T *)img.Scan0.ToPointer();
return(ref *(p += idx));
}
