void COpencvView::OnDraw(CDC* pDC)
{
COpencvDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
CImage & img = pDoc ->m_image;
CRect r;
GetClientRect (&r);
img.DrawToHDC(pDC->GetSafeHdc() ,r);
}那怎么写? 都没找到资料...
{
COpencvDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
CImage & img = pDoc ->m_image;
CRect r;
GetClientRect (&r);
img.DrawToHDC(pDC->GetSafeHdc() ,r);
}那怎么写? 都没找到资料...
对数组元素进行固定阈值操作 void cvThreshold( const CvArr* src, CvArr* dst, double threshold,
double max_value, int threshold_type );src
原始数组 (单通道 , 8-bit of 32-bit 浮点数).
dst
输出数组,必须与 src 的类型一致,或者为 8-bit.
threshold
阈值
max_value
使用 CV_THRESH_BINARY 和 CV_THRESH_BINARY_INV 的最大值.
threshold_type
阈值类型 (见讨论)
函数 cvThreshold 对单通道数组应用固定阈值操作。该函数的典型应用是对灰度图像进行阈值操作得到二值图像。(cvCmpS 也可以达到此目的) 或者是去掉噪声,例如过滤很小或很大象素值的图像点。本函数支持的对图像取阈值的方法由 threshold_type 确定: threshold_type=CV_THRESH_BINARY:
dst(x,y) = max_value, if src(x,y)>threshold
0, otherwisethreshold_type=CV_THRESH_BINARY_INV:
dst(x,y) = 0, if src(x,y)>threshold
max_value, otherwisethreshold_type=CV_THRESH_TRUNC:
dst(x,y) = threshold, if src(x,y)>threshold
src(x,y), otherwisethreshold_type=CV_THRESH_TOZERO:
dst(x,y) = src(x,y), if (x,y)>threshold
0, otherwisethreshold_type=CV_THRESH_TOZERO_INV:
dst(x,y) = 0, if src(x,y)>threshold
src(x,y), otherwise